/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-6f57305 [2021-01-26 18:13:28,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-26 18:13:28,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-26 18:13:28,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-26 18:13:28,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-26 18:13:28,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-26 18:13:28,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-26 18:13:28,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-26 18:13:28,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-26 18:13:28,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-26 18:13:28,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-26 18:13:28,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-26 18:13:28,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-26 18:13:28,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-26 18:13:28,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-26 18:13:28,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-26 18:13:28,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-26 18:13:28,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-26 18:13:29,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-26 18:13:29,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-26 18:13:29,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-26 18:13:29,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-26 18:13:29,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-26 18:13:29,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-26 18:13:29,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-26 18:13:29,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-26 18:13:29,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-26 18:13:29,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-26 18:13:29,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-26 18:13:29,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-26 18:13:29,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-26 18:13:29,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-26 18:13:29,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-26 18:13:29,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-26 18:13:29,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-26 18:13:29,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-26 18:13:29,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-26 18:13:29,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-26 18:13:29,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-26 18:13:29,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-26 18:13:29,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-26 18:13:29,044 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-01-26 18:13:29,102 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-26 18:13:29,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-26 18:13:29,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-26 18:13:29,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-26 18:13:29,107 INFO L138 SettingsManager]: * Use SBE=true [2021-01-26 18:13:29,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-26 18:13:29,108 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-26 18:13:29,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-26 18:13:29,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-26 18:13:29,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-26 18:13:29,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-26 18:13:29,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-26 18:13:29,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-26 18:13:29,110 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-26 18:13:29,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-26 18:13:29,111 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-26 18:13:29,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-26 18:13:29,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-26 18:13:29,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-26 18:13:29,112 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-26 18:13:29,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-26 18:13:29,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-26 18:13:29,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-26 18:13:29,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-26 18:13:29,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-26 18:13:29,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-26 18:13:29,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-26 18:13:29,113 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-26 18:13:29,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-26 18:13:29,114 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-26 18:13:29,114 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-26 18:13:29,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-26 18:13:29,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-26 18:13:29,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-26 18:13:29,577 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-26 18:13:29,577 INFO L275 PluginConnector]: CDTParser initialized [2021-01-26 18:13:29,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2021-01-26 18:13:29,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21a4819c7/1214b3b515d84b9a9ad1876adbba6edd/FLAG1aa0e8e02 [2021-01-26 18:13:30,489 INFO L306 CDTParser]: Found 1 translation units. [2021-01-26 18:13:30,490 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2021-01-26 18:13:30,527 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21a4819c7/1214b3b515d84b9a9ad1876adbba6edd/FLAG1aa0e8e02 [2021-01-26 18:13:30,769 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21a4819c7/1214b3b515d84b9a9ad1876adbba6edd [2021-01-26 18:13:30,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-26 18:13:30,793 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-26 18:13:30,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-26 18:13:30,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-26 18:13:30,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-26 18:13:30,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 06:13:30" (1/1) ... [2021-01-26 18:13:30,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f3e50d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 06:13:30, skipping insertion in model container [2021-01-26 18:13:30,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 06:13:30" (1/1) ... [2021-01-26 18:13:30,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-26 18:13:30,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-26 18:13:31,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-26 18:13:31,549 INFO L203 MainTranslator]: Completed pre-run [2021-01-26 18:13:31,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-26 18:13:31,892 INFO L208 MainTranslator]: Completed translation [2021-01-26 18:13:31,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 06:13:31 WrapperNode [2021-01-26 18:13:31,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-26 18:13:31,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-26 18:13:31,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-26 18:13:31,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-26 18:13:31,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 06:13:31" (1/1) ... [2021-01-26 18:13:31,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 06:13:31" (1/1) ... [2021-01-26 18:13:31,963 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-26 18:13:31,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-26 18:13:31,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-26 18:13:31,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-26 18:13:31,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 06:13:31" (1/1) ... [2021-01-26 18:13:31,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 06:13:31" (1/1) ... [2021-01-26 18:13:31,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 06:13:31" (1/1) ... [2021-01-26 18:13:31,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 06:13:31" (1/1) ... [2021-01-26 18:13:31,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 06:13:31" (1/1) ... [2021-01-26 18:13:31,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 06:13:31" (1/1) ... [2021-01-26 18:13:31,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 06:13:31" (1/1) ... [2021-01-26 18:13:31,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-26 18:13:31,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-26 18:13:31,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-26 18:13:31,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-26 18:13:32,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 06:13:31" (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 [2021-01-26 18:13:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-26 18:13:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-26 18:13:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-26 18:13:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-26 18:13:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-01-26 18:13:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2021-01-26 18:13:32,098 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2021-01-26 18:13:32,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-26 18:13:32,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-26 18:13:32,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-26 18:13:32,100 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-26 18:13:32,849 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-26 18:13:32,850 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-26 18:13:32,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 06:13:32 BoogieIcfgContainer [2021-01-26 18:13:32,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-26 18:13:32,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-26 18:13:32,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-26 18:13:32,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-26 18:13:32,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.01 06:13:30" (1/3) ... [2021-01-26 18:13:32,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f51200f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 06:13:32, skipping insertion in model container [2021-01-26 18:13:32,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 06:13:31" (2/3) ... [2021-01-26 18:13:32,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f51200f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 06:13:32, skipping insertion in model container [2021-01-26 18:13:32,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 06:13:32" (3/3) ... [2021-01-26 18:13:32,864 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2021-01-26 18:13:32,880 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-26 18:13:32,880 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-26 18:13:32,883 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-26 18:13:32,884 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-26 18:13:32,914 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,914 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,915 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,915 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,915 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,915 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,916 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,916 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,916 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,916 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,917 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,917 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,917 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,917 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,918 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,918 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,918 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,918 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,918 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,919 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,919 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,919 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,919 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,920 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,920 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,920 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,920 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,921 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,921 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,921 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,921 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,922 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,922 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,922 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,922 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,923 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,923 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,923 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,923 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,924 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,924 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,924 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,924 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,924 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,925 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,925 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,927 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,928 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,928 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,928 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,928 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,929 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,929 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,929 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,929 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 18:13:32,940 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-01-26 18:13:32,954 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-26 18:13:32,978 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-26 18:13:32,978 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-26 18:13:32,978 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-26 18:13:32,978 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-26 18:13:32,978 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-26 18:13:32,978 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-26 18:13:32,978 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-26 18:13:32,979 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-26 18:13:32,991 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 90 transitions, 188 flow [2021-01-26 18:13:33,021 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 320 states, 318 states have (on average 2.0251572327044025) internal successors, (644), 319 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:13:33,026 INFO L276 IsEmpty]: Start isEmpty. Operand has 320 states, 318 states have (on average 2.0251572327044025) internal successors, (644), 319 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:13:33,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-26 18:13:33,043 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 18:13:33,044 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 18:13:33,045 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 18:13:33,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 18:13:33,052 INFO L82 PathProgramCache]: Analyzing trace with hash 418508673, now seen corresponding path program 1 times [2021-01-26 18:13:33,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 18:13:33,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647628317] [2021-01-26 18:13:33,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 18:13:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 18:13:33,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 18:13:33,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647628317] [2021-01-26 18:13:33,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 18:13:33,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-26 18:13:33,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969653289] [2021-01-26 18:13:33,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-26 18:13:33,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 18:13:33,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-26 18:13:33,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-26 18:13:33,394 INFO L87 Difference]: Start difference. First operand has 320 states, 318 states have (on average 2.0251572327044025) internal successors, (644), 319 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:13:33,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 18:13:33,425 INFO L93 Difference]: Finished difference Result 311 states and 581 transitions. [2021-01-26 18:13:33,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-26 18:13:33,426 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-01-26 18:13:33,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 18:13:33,443 INFO L225 Difference]: With dead ends: 311 [2021-01-26 18:13:33,444 INFO L226 Difference]: Without dead ends: 274 [2021-01-26 18:13:33,445 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-26 18:13:33,445 INFO L78 Accepts]: Start accepts. Automaton has 274 states. Word has length 52 [2021-01-26 18:13:33,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 18:13:33,448 INFO L481 AbstractCegarLoop]: Abstraction has 274 states. [2021-01-26 18:13:33,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:13:33,448 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2021-01-26 18:13:33,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-26 18:13:33,456 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 18:13:33,457 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 18:13:33,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-26 18:13:33,457 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 18:13:33,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 18:13:33,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1420501857, now seen corresponding path program 1 times [2021-01-26 18:13:33,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 18:13:33,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879928870] [2021-01-26 18:13:33,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 18:13:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 18:13:33,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 18:13:33,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879928870] [2021-01-26 18:13:33,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 18:13:33,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-26 18:13:33,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341580592] [2021-01-26 18:13:33,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-26 18:13:33,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 18:13:33,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-26 18:13:33,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-26 18:13:33,650 INFO L87 Difference]: Start difference. First operand 274 states. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:13:33,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 18:13:33,722 INFO L93 Difference]: Finished difference Result 404 states and 768 transitions. [2021-01-26 18:13:33,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-26 18:13:33,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-01-26 18:13:33,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 18:13:33,729 INFO L225 Difference]: With dead ends: 404 [2021-01-26 18:13:33,729 INFO L226 Difference]: Without dead ends: 404 [2021-01-26 18:13:33,730 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-26 18:13:33,730 INFO L78 Accepts]: Start accepts. Automaton has 404 states. Word has length 52 [2021-01-26 18:13:33,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 18:13:33,731 INFO L481 AbstractCegarLoop]: Abstraction has 404 states. [2021-01-26 18:13:33,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:13:33,731 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states. [2021-01-26 18:13:33,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-01-26 18:13:33,736 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 18:13:33,737 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 18:13:33,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-26 18:13:33,737 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 18:13:33,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 18:13:33,738 INFO L82 PathProgramCache]: Analyzing trace with hash 255348339, now seen corresponding path program 1 times [2021-01-26 18:13:33,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 18:13:33,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286661938] [2021-01-26 18:13:33,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 18:13:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 18:13:33,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 18:13:33,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286661938] [2021-01-26 18:13:33,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 18:13:33,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-26 18:13:33,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636704701] [2021-01-26 18:13:33,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-26 18:13:33,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 18:13:33,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-26 18:13:33,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-26 18:13:33,878 INFO L87 Difference]: Start difference. First operand 404 states. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:13:33,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 18:13:33,904 INFO L93 Difference]: Finished difference Result 600 states and 1160 transitions. [2021-01-26 18:13:33,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-26 18:13:33,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-01-26 18:13:33,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 18:13:33,912 INFO L225 Difference]: With dead ends: 600 [2021-01-26 18:13:33,912 INFO L226 Difference]: Without dead ends: 600 [2021-01-26 18:13:33,912 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-26 18:13:33,913 INFO L78 Accepts]: Start accepts. Automaton has 600 states. Word has length 63 [2021-01-26 18:13:33,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 18:13:33,913 INFO L481 AbstractCegarLoop]: Abstraction has 600 states. [2021-01-26 18:13:33,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:13:33,914 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states. [2021-01-26 18:13:33,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-26 18:13:33,919 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 18:13:33,919 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 18:13:33,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-26 18:13:33,920 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 18:13:33,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 18:13:33,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1925948387, now seen corresponding path program 1 times [2021-01-26 18:13:33,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 18:13:33,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32249449] [2021-01-26 18:13:33,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 18:13:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 18:13:34,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 18:13:34,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32249449] [2021-01-26 18:13:34,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541001669] [2021-01-26 18:13:34,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:13:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 18:13:34,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-26 18:13:34,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 18:13:34,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 18:13:34,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 18:13:34,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-01-26 18:13:34,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116023784] [2021-01-26 18:13:34,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 18:13:34,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 18:13:34,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 18:13:34,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-26 18:13:34,310 INFO L87 Difference]: Start difference. First operand 600 states. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:13:34,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 18:13:34,380 INFO L93 Difference]: Finished difference Result 820 states and 1600 transitions. [2021-01-26 18:13:34,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-26 18:13:34,381 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-01-26 18:13:34,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 18:13:34,386 INFO L225 Difference]: With dead ends: 820 [2021-01-26 18:13:34,387 INFO L226 Difference]: Without dead ends: 820 [2021-01-26 18:13:34,387 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-26 18:13:34,388 INFO L78 Accepts]: Start accepts. Automaton has 820 states. Word has length 71 [2021-01-26 18:13:34,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 18:13:34,388 INFO L481 AbstractCegarLoop]: Abstraction has 820 states. [2021-01-26 18:13:34,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:13:34,389 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states. [2021-01-26 18:13:34,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-01-26 18:13:34,394 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 18:13:34,394 INFO L504 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 18:13:34,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:13:34,609 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 18:13:34,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 18:13:34,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1527926795, now seen corresponding path program 2 times [2021-01-26 18:13:34,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 18:13:34,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050455187] [2021-01-26 18:13:34,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 18:13:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 18:13:34,800 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-01-26 18:13:34,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050455187] [2021-01-26 18:13:34,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580488416] [2021-01-26 18:13:34,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:13:34,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 18:13:34,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 18:13:34,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-26 18:13:34,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 18:13:34,961 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-01-26 18:13:34,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 18:13:34,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-01-26 18:13:34,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091745764] [2021-01-26 18:13:34,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 18:13:34,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 18:13:34,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 18:13:34,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-26 18:13:34,964 INFO L87 Difference]: Start difference. First operand 820 states. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:13:35,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 18:13:35,018 INFO L93 Difference]: Finished difference Result 1132 states and 2224 transitions. [2021-01-26 18:13:35,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-26 18:13:35,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-01-26 18:13:35,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 18:13:35,026 INFO L225 Difference]: With dead ends: 1132 [2021-01-26 18:13:35,026 INFO L226 Difference]: Without dead ends: 1132 [2021-01-26 18:13:35,026 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-26 18:13:35,027 INFO L78 Accepts]: Start accepts. Automaton has 1132 states. Word has length 82 [2021-01-26 18:13:35,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 18:13:35,027 INFO L481 AbstractCegarLoop]: Abstraction has 1132 states. [2021-01-26 18:13:35,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:13:35,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states. [2021-01-26 18:13:35,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-01-26 18:13:35,031 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 18:13:35,032 INFO L504 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 18:13:35,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:13:35,246 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 18:13:35,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 18:13:35,247 INFO L82 PathProgramCache]: Analyzing trace with hash 126749173, now seen corresponding path program 3 times [2021-01-26 18:13:35,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 18:13:35,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93200843] [2021-01-26 18:13:35,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 18:13:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 18:13:35,342 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-01-26 18:13:35,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93200843] [2021-01-26 18:13:35,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774812272] [2021-01-26 18:13:35,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:13:35,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-26 18:13:35,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 18:13:35,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-26 18:13:35,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 18:13:35,585 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-01-26 18:13:35,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 18:13:35,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-01-26 18:13:35,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750083820] [2021-01-26 18:13:35,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-26 18:13:35,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 18:13:35,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-26 18:13:35,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-01-26 18:13:35,589 INFO L87 Difference]: Start difference. First operand 1132 states. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:13:37,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 18:13:37,145 INFO L93 Difference]: Finished difference Result 1840 states and 3640 transitions. [2021-01-26 18:13:37,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-01-26 18:13:37,146 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-01-26 18:13:37,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 18:13:37,157 INFO L225 Difference]: With dead ends: 1840 [2021-01-26 18:13:37,157 INFO L226 Difference]: Without dead ends: 1840 [2021-01-26 18:13:37,160 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1695 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1130, Invalid=3562, Unknown=0, NotChecked=0, Total=4692 [2021-01-26 18:13:37,160 INFO L78 Accepts]: Start accepts. Automaton has 1840 states. Word has length 90 [2021-01-26 18:13:37,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 18:13:37,160 INFO L481 AbstractCegarLoop]: Abstraction has 1840 states. [2021-01-26 18:13:37,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:13:37,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states. [2021-01-26 18:13:37,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-01-26 18:13:37,166 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 18:13:37,166 INFO L504 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 18:13:37,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:13:37,379 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 18:13:37,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 18:13:37,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1071300303, now seen corresponding path program 4 times [2021-01-26 18:13:37,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 18:13:37,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735887640] [2021-01-26 18:13:37,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 18:13:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 18:13:37,562 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-01-26 18:13:37,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735887640] [2021-01-26 18:13:37,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441497272] [2021-01-26 18:13:37,563 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:13:37,671 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 18:13:37,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 18:13:37,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-26 18:13:37,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 18:13:37,872 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-01-26 18:13:37,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 18:13:37,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-01-26 18:13:37,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159457947] [2021-01-26 18:13:37,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-26 18:13:37,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 18:13:37,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-26 18:13:37,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-01-26 18:13:37,879 INFO L87 Difference]: Start difference. First operand 1840 states. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:13:38,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 18:13:38,044 INFO L93 Difference]: Finished difference Result 2236 states and 4432 transitions. [2021-01-26 18:13:38,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-26 18:13:38,045 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-01-26 18:13:38,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 18:13:38,058 INFO L225 Difference]: With dead ends: 2236 [2021-01-26 18:13:38,058 INFO L226 Difference]: Without dead ends: 2236 [2021-01-26 18:13:38,058 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-01-26 18:13:38,059 INFO L78 Accepts]: Start accepts. Automaton has 2236 states. Word has length 109 [2021-01-26 18:13:38,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 18:13:38,059 INFO L481 AbstractCegarLoop]: Abstraction has 2236 states. [2021-01-26 18:13:38,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:13:38,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states. [2021-01-26 18:13:38,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-01-26 18:13:38,065 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 18:13:38,066 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 18:13:38,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:13:38,281 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 18:13:38,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 18:13:38,282 INFO L82 PathProgramCache]: Analyzing trace with hash 165335711, now seen corresponding path program 5 times [2021-01-26 18:13:38,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 18:13:38,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647409900] [2021-01-26 18:13:38,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 18:13:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 18:13:38,472 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-01-26 18:13:38,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647409900] [2021-01-26 18:13:38,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360568999] [2021-01-26 18:13:38,473 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:13:38,615 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-01-26 18:13:38,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 18:13:38,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-26 18:13:38,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 18:13:38,768 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-01-26 18:13:38,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 18:13:38,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-01-26 18:13:38,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056086269] [2021-01-26 18:13:38,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-26 18:13:38,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 18:13:38,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-26 18:13:38,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-01-26 18:13:38,771 INFO L87 Difference]: Start difference. First operand 2236 states. Second operand has 18 states, 18 states have (on average 8.11111111111111) internal successors, (146), 18 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:13:43,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 18:13:43,499 INFO L93 Difference]: Finished difference Result 3208 states and 6376 transitions. [2021-01-26 18:13:43,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2021-01-26 18:13:43,500 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.11111111111111) internal successors, (146), 18 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-01-26 18:13:43,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 18:13:43,519 INFO L225 Difference]: With dead ends: 3208 [2021-01-26 18:13:43,519 INFO L226 Difference]: Without dead ends: 3208 [2021-01-26 18:13:43,534 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11273 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=5484, Invalid=20598, Unknown=0, NotChecked=0, Total=26082 [2021-01-26 18:13:43,535 INFO L78 Accepts]: Start accepts. Automaton has 3208 states. Word has length 120 [2021-01-26 18:13:43,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 18:13:43,535 INFO L481 AbstractCegarLoop]: Abstraction has 3208 states. [2021-01-26 18:13:43,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 8.11111111111111) internal successors, (146), 18 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:13:43,536 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states. [2021-01-26 18:13:43,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-01-26 18:13:43,544 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 18:13:43,545 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 18:13:43,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:13:43,760 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 18:13:43,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 18:13:43,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1067080613, now seen corresponding path program 6 times [2021-01-26 18:13:43,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 18:13:43,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763390110] [2021-01-26 18:13:43,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 18:13:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 18:13:43,994 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-01-26 18:13:43,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763390110] [2021-01-26 18:13:43,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603034303] [2021-01-26 18:13:43,994 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:13:44,178 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-01-26 18:13:44,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 18:13:44,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-26 18:13:44,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 18:13:44,278 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-01-26 18:13:44,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 18:13:44,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-01-26 18:13:44,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689160253] [2021-01-26 18:13:44,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-26 18:13:44,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 18:13:44,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-26 18:13:44,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-01-26 18:13:44,281 INFO L87 Difference]: Start difference. First operand 3208 states. Second operand has 15 states, 15 states have (on average 8.4) internal successors, (126), 15 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:13:44,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 18:13:44,499 INFO L93 Difference]: Finished difference Result 3692 states and 7344 transitions. [2021-01-26 18:13:44,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-26 18:13:44,500 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.4) internal successors, (126), 15 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-01-26 18:13:44,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 18:13:44,517 INFO L225 Difference]: With dead ends: 3692 [2021-01-26 18:13:44,518 INFO L226 Difference]: Without dead ends: 3692 [2021-01-26 18:13:44,518 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2021-01-26 18:13:44,518 INFO L78 Accepts]: Start accepts. Automaton has 3692 states. Word has length 139 [2021-01-26 18:13:44,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 18:13:44,519 INFO L481 AbstractCegarLoop]: Abstraction has 3692 states. [2021-01-26 18:13:44,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 8.4) internal successors, (126), 15 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:13:44,519 INFO L276 IsEmpty]: Start isEmpty. Operand 3692 states. [2021-01-26 18:13:44,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-01-26 18:13:44,528 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 18:13:44,529 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 18:13:44,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:13:44,744 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 18:13:44,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 18:13:44,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1261600439, now seen corresponding path program 7 times [2021-01-26 18:13:44,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 18:13:44,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056751935] [2021-01-26 18:13:44,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 18:13:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 18:13:44,996 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-01-26 18:13:44,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056751935] [2021-01-26 18:13:44,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919860053] [2021-01-26 18:13:44,997 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:13:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 18:13:45,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-26 18:13:45,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 18:13:45,246 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-01-26 18:13:45,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 18:13:45,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-01-26 18:13:45,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264987499] [2021-01-26 18:13:45,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-26 18:13:45,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 18:13:45,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-26 18:13:45,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-01-26 18:13:45,250 INFO L87 Difference]: Start difference. First operand 3692 states. Second operand has 17 states, 17 states have (on average 8.058823529411764) internal successors, (137), 17 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:13:45,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 18:13:45,594 INFO L93 Difference]: Finished difference Result 4176 states and 8312 transitions. [2021-01-26 18:13:45,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-26 18:13:45,595 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 8.058823529411764) internal successors, (137), 17 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-01-26 18:13:45,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 18:13:45,617 INFO L225 Difference]: With dead ends: 4176 [2021-01-26 18:13:45,618 INFO L226 Difference]: Without dead ends: 4176 [2021-01-26 18:13:45,618 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2021-01-26 18:13:45,619 INFO L78 Accepts]: Start accepts. Automaton has 4176 states. Word has length 150 [2021-01-26 18:13:45,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 18:13:45,619 INFO L481 AbstractCegarLoop]: Abstraction has 4176 states. [2021-01-26 18:13:45,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 8.058823529411764) internal successors, (137), 17 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:13:45,620 INFO L276 IsEmpty]: Start isEmpty. Operand 4176 states. [2021-01-26 18:13:45,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-01-26 18:13:45,630 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 18:13:45,630 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 18:13:45,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-26 18:13:45,845 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 18:13:45,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 18:13:45,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1689525349, now seen corresponding path program 8 times [2021-01-26 18:13:45,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 18:13:45,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901523788] [2021-01-26 18:13:45,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 18:13:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 18:13:46,115 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-01-26 18:13:46,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901523788] [2021-01-26 18:13:46,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318560489] [2021-01-26 18:13:46,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:13:46,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 18:13:46,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 18:13:46,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-26 18:13:46,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 18:13:46,345 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-01-26 18:13:46,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 18:13:46,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-01-26 18:13:46,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628418463] [2021-01-26 18:13:46,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-26 18:13:46,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 18:13:46,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-26 18:13:46,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-01-26 18:13:46,348 INFO L87 Difference]: Start difference. First operand 4176 states. Second operand has 19 states, 19 states have (on average 7.7894736842105265) internal successors, (148), 19 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:13:46,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 18:13:46,692 INFO L93 Difference]: Finished difference Result 4660 states and 9280 transitions. [2021-01-26 18:13:46,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-26 18:13:46,693 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.7894736842105265) internal successors, (148), 19 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2021-01-26 18:13:46,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 18:13:46,724 INFO L225 Difference]: With dead ends: 4660 [2021-01-26 18:13:46,724 INFO L226 Difference]: Without dead ends: 4660 [2021-01-26 18:13:46,725 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2021-01-26 18:13:46,725 INFO L78 Accepts]: Start accepts. Automaton has 4660 states. Word has length 161 [2021-01-26 18:13:46,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 18:13:46,726 INFO L481 AbstractCegarLoop]: Abstraction has 4660 states. [2021-01-26 18:13:46,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 7.7894736842105265) internal successors, (148), 19 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:13:46,726 INFO L276 IsEmpty]: Start isEmpty. Operand 4660 states. [2021-01-26 18:13:46,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-01-26 18:13:46,737 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 18:13:46,737 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 18:13:46,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-01-26 18:13:46,953 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 18:13:46,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 18:13:46,954 INFO L82 PathProgramCache]: Analyzing trace with hash -767346167, now seen corresponding path program 9 times [2021-01-26 18:13:46,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 18:13:46,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192093004] [2021-01-26 18:13:46,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 18:13:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 18:13:47,326 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-01-26 18:13:47,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192093004] [2021-01-26 18:13:47,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670589074] [2021-01-26 18:13:47,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:13:47,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-01-26 18:13:47,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 18:13:47,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-26 18:13:47,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 18:13:47,718 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-01-26 18:13:47,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 18:13:47,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11] total 28 [2021-01-26 18:13:47,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075966984] [2021-01-26 18:13:47,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-01-26 18:13:47,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 18:13:47,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-01-26 18:13:47,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2021-01-26 18:13:47,722 INFO L87 Difference]: Start difference. First operand 4660 states. Second operand has 28 states, 28 states have (on average 7.071428571428571) internal successors, (198), 28 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:14:07,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 18:14:07,330 INFO L93 Difference]: Finished difference Result 6072 states and 12104 transitions. [2021-01-26 18:14:07,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 365 states. [2021-01-26 18:14:07,330 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.071428571428571) internal successors, (198), 28 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2021-01-26 18:14:07,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 18:14:07,342 INFO L225 Difference]: With dead ends: 6072 [2021-01-26 18:14:07,342 INFO L226 Difference]: Without dead ends: 6072 [2021-01-26 18:14:07,362 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67168 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=27129, Invalid=114623, Unknown=0, NotChecked=0, Total=141752 [2021-01-26 18:14:07,363 INFO L78 Accepts]: Start accepts. Automaton has 6072 states. Word has length 172 [2021-01-26 18:14:07,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 18:14:07,363 INFO L481 AbstractCegarLoop]: Abstraction has 6072 states. [2021-01-26 18:14:07,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 7.071428571428571) internal successors, (198), 28 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:14:07,364 INFO L276 IsEmpty]: Start isEmpty. Operand 6072 states. [2021-01-26 18:14:07,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-01-26 18:14:07,375 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 18:14:07,375 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 18:14:07,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:14:07,590 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 18:14:07,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 18:14:07,591 INFO L82 PathProgramCache]: Analyzing trace with hash 2028149957, now seen corresponding path program 10 times [2021-01-26 18:14:07,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 18:14:07,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615175481] [2021-01-26 18:14:07,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 18:14:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 18:14:07,982 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 405 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-01-26 18:14:07,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615175481] [2021-01-26 18:14:07,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650419955] [2021-01-26 18:14:07,983 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:14:08,125 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 18:14:08,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 18:14:08,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-26 18:14:08,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 18:14:08,211 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 405 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-01-26 18:14:08,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 18:14:08,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-01-26 18:14:08,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654140832] [2021-01-26 18:14:08,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-26 18:14:08,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 18:14:08,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-26 18:14:08,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-01-26 18:14:08,214 INFO L87 Difference]: Start difference. First operand 6072 states. Second operand has 23 states, 23 states have (on average 7.391304347826087) internal successors, (170), 23 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:14:08,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 18:14:08,728 INFO L93 Difference]: Finished difference Result 6644 states and 13248 transitions. [2021-01-26 18:14:08,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-26 18:14:08,729 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.391304347826087) internal successors, (170), 23 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2021-01-26 18:14:08,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 18:14:08,743 INFO L225 Difference]: With dead ends: 6644 [2021-01-26 18:14:08,743 INFO L226 Difference]: Without dead ends: 6644 [2021-01-26 18:14:08,744 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2021-01-26 18:14:08,744 INFO L78 Accepts]: Start accepts. Automaton has 6644 states. Word has length 191 [2021-01-26 18:14:08,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 18:14:08,744 INFO L481 AbstractCegarLoop]: Abstraction has 6644 states. [2021-01-26 18:14:08,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 7.391304347826087) internal successors, (170), 23 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:14:08,745 INFO L276 IsEmpty]: Start isEmpty. Operand 6644 states. [2021-01-26 18:14:08,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-01-26 18:14:08,759 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 18:14:08,759 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 18:14:08,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:14:08,974 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 18:14:08,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 18:14:08,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1796866381, now seen corresponding path program 11 times [2021-01-26 18:14:08,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 18:14:08,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091246147] [2021-01-26 18:14:08,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 18:14:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 18:14:09,424 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 505 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-01-26 18:14:09,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091246147] [2021-01-26 18:14:09,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623148185] [2021-01-26 18:14:09,425 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:14:09,696 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-01-26 18:14:09,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 18:14:09,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-26 18:14:09,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 18:14:09,812 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 505 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-01-26 18:14:09,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 18:14:09,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-01-26 18:14:09,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965515538] [2021-01-26 18:14:09,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-26 18:14:09,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 18:14:09,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-26 18:14:09,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2021-01-26 18:14:09,815 INFO L87 Difference]: Start difference. First operand 6644 states. Second operand has 25 states, 25 states have (on average 7.24) internal successors, (181), 25 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:14:10,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 18:14:10,485 INFO L93 Difference]: Finished difference Result 7216 states and 14392 transitions. [2021-01-26 18:14:10,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-26 18:14:10,486 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.24) internal successors, (181), 25 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2021-01-26 18:14:10,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 18:14:10,501 INFO L225 Difference]: With dead ends: 7216 [2021-01-26 18:14:10,501 INFO L226 Difference]: Without dead ends: 7216 [2021-01-26 18:14:10,502 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2021-01-26 18:14:10,502 INFO L78 Accepts]: Start accepts. Automaton has 7216 states. Word has length 202 [2021-01-26 18:14:10,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 18:14:10,502 INFO L481 AbstractCegarLoop]: Abstraction has 7216 states. [2021-01-26 18:14:10,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 7.24) internal successors, (181), 25 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:14:10,503 INFO L276 IsEmpty]: Start isEmpty. Operand 7216 states. [2021-01-26 18:14:10,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-01-26 18:14:10,517 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 18:14:10,517 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 18:14:10,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-26 18:14:10,734 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 18:14:10,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 18:14:10,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1927005179, now seen corresponding path program 12 times [2021-01-26 18:14:10,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 18:14:10,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721030022] [2021-01-26 18:14:10,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 18:14:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 18:14:11,191 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-01-26 18:14:11,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721030022] [2021-01-26 18:14:11,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546750588] [2021-01-26 18:14:11,192 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:14:11,416 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-01-26 18:14:11,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 18:14:11,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-26 18:14:11,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 18:14:11,769 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2021-01-26 18:14:11,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 18:14:11,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13] total 36 [2021-01-26 18:14:11,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416635769] [2021-01-26 18:14:11,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-01-26 18:14:11,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 18:14:11,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-01-26 18:14:11,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1045, Unknown=0, NotChecked=0, Total=1260 [2021-01-26 18:14:11,825 INFO L87 Difference]: Start difference. First operand 7216 states. Second operand has 36 states, 36 states have (on average 6.638888888888889) internal successors, (239), 36 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:15:02,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 18:15:02,752 INFO L93 Difference]: Finished difference Result 8980 states and 17920 transitions. [2021-01-26 18:15:02,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 596 states. [2021-01-26 18:15:02,752 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 6.638888888888889) internal successors, (239), 36 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2021-01-26 18:15:02,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 18:15:02,764 INFO L225 Difference]: With dead ends: 8980 [2021-01-26 18:15:02,765 INFO L226 Difference]: Without dead ends: 8980 [2021-01-26 18:15:02,788 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 879 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 610 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183115 ImplicationChecksByTransitivity, 48.7s TimeCoverageRelationStatistics Valid=68543, Invalid=305389, Unknown=0, NotChecked=0, Total=373932 [2021-01-26 18:15:02,788 INFO L78 Accepts]: Start accepts. Automaton has 8980 states. Word has length 213 [2021-01-26 18:15:02,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 18:15:02,789 INFO L481 AbstractCegarLoop]: Abstraction has 8980 states. [2021-01-26 18:15:02,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 6.638888888888889) internal successors, (239), 36 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:15:02,789 INFO L276 IsEmpty]: Start isEmpty. Operand 8980 states. [2021-01-26 18:15:02,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-01-26 18:15:02,805 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 18:15:02,806 INFO L504 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 18:15:03,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-26 18:15:03,021 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 18:15:03,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 18:15:03,022 INFO L82 PathProgramCache]: Analyzing trace with hash -364467875, now seen corresponding path program 13 times [2021-01-26 18:15:03,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 18:15:03,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371357788] [2021-01-26 18:15:03,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 18:15:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 18:15:03,613 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 738 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-01-26 18:15:03,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371357788] [2021-01-26 18:15:03,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325814] [2021-01-26 18:15:03,613 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:15:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 18:15:03,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-26 18:15:03,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 18:15:03,898 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 738 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-01-26 18:15:03,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 18:15:03,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-01-26 18:15:03,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218651079] [2021-01-26 18:15:03,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-01-26 18:15:03,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 18:15:03,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-01-26 18:15:03,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2021-01-26 18:15:03,901 INFO L87 Difference]: Start difference. First operand 8980 states. Second operand has 29 states, 29 states have (on average 7.0) internal successors, (203), 29 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:15:04,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 18:15:04,990 INFO L93 Difference]: Finished difference Result 9640 states and 19240 transitions. [2021-01-26 18:15:04,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-01-26 18:15:04,992 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 7.0) internal successors, (203), 29 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2021-01-26 18:15:04,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 18:15:05,006 INFO L225 Difference]: With dead ends: 9640 [2021-01-26 18:15:05,006 INFO L226 Difference]: Without dead ends: 9640 [2021-01-26 18:15:05,007 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2021-01-26 18:15:05,007 INFO L78 Accepts]: Start accepts. Automaton has 9640 states. Word has length 232 [2021-01-26 18:15:05,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 18:15:05,007 INFO L481 AbstractCegarLoop]: Abstraction has 9640 states. [2021-01-26 18:15:05,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 7.0) internal successors, (203), 29 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:15:05,008 INFO L276 IsEmpty]: Start isEmpty. Operand 9640 states. [2021-01-26 18:15:05,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-01-26 18:15:05,029 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 18:15:05,029 INFO L504 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 18:15:05,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-26 18:15:05,243 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 18:15:05,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 18:15:05,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1941157073, now seen corresponding path program 14 times [2021-01-26 18:15:05,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 18:15:05,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336108240] [2021-01-26 18:15:05,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 18:15:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 18:15:05,984 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 0 proven. 871 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-01-26 18:15:05,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336108240] [2021-01-26 18:15:05,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631720955] [2021-01-26 18:15:05,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:15:06,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 18:15:06,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 18:15:06,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-26 18:15:06,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 18:15:06,255 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 0 proven. 871 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-01-26 18:15:06,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 18:15:06,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-01-26 18:15:06,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080640457] [2021-01-26 18:15:06,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-01-26 18:15:06,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 18:15:06,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-01-26 18:15:06,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-01-26 18:15:06,259 INFO L87 Difference]: Start difference. First operand 9640 states. Second operand has 31 states, 31 states have (on average 6.903225806451613) internal successors, (214), 31 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:15:07,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 18:15:07,328 INFO L93 Difference]: Finished difference Result 10300 states and 20560 transitions. [2021-01-26 18:15:07,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-01-26 18:15:07,329 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.903225806451613) internal successors, (214), 31 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 243 [2021-01-26 18:15:07,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 18:15:07,338 INFO L225 Difference]: With dead ends: 10300 [2021-01-26 18:15:07,338 INFO L226 Difference]: Without dead ends: 10300 [2021-01-26 18:15:07,339 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2021-01-26 18:15:07,339 INFO L78 Accepts]: Start accepts. Automaton has 10300 states. Word has length 243 [2021-01-26 18:15:07,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 18:15:07,340 INFO L481 AbstractCegarLoop]: Abstraction has 10300 states. [2021-01-26 18:15:07,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 6.903225806451613) internal successors, (214), 31 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:15:07,340 INFO L276 IsEmpty]: Start isEmpty. Operand 10300 states. [2021-01-26 18:15:07,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-01-26 18:15:07,350 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 18:15:07,351 INFO L504 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 18:15:07,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:15:07,552 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 18:15:07,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 18:15:07,553 INFO L82 PathProgramCache]: Analyzing trace with hash -303975907, now seen corresponding path program 15 times [2021-01-26 18:15:07,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 18:15:07,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328605109] [2021-01-26 18:15:07,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 18:15:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 18:15:08,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 0 proven. 1015 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-01-26 18:15:08,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328605109] [2021-01-26 18:15:08,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175858810] [2021-01-26 18:15:08,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:15:08,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-26 18:15:08,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 18:15:08,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-26 18:15:08,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 18:15:09,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 1015 trivial. 0 not checked. [2021-01-26 18:15:09,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 18:15:09,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 15] total 44 [2021-01-26 18:15:09,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756663998] [2021-01-26 18:15:09,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-01-26 18:15:09,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 18:15:09,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-01-26 18:15:09,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1575, Unknown=0, NotChecked=0, Total=1892 [2021-01-26 18:15:09,147 INFO L87 Difference]: Start difference. First operand 10300 states. Second operand has 44 states, 44 states have (on average 6.363636363636363) internal successors, (280), 44 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:15:15,337 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-01-26 18:15:48,289 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2021-01-26 18:17:16,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 18:17:16,413 INFO L93 Difference]: Finished difference Result 12416 states and 24792 transitions. [2021-01-26 18:17:16,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 881 states. [2021-01-26 18:17:16,413 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 6.363636363636363) internal successors, (280), 44 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 254 [2021-01-26 18:17:16,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 18:17:16,424 INFO L225 Difference]: With dead ends: 12416 [2021-01-26 18:17:16,425 INFO L226 Difference]: Without dead ends: 12416 [2021-01-26 18:17:16,462 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 1224 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 899 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404975 ImplicationChecksByTransitivity, 123.2s TimeCoverageRelationStatistics Valid=144350, Invalid=666550, Unknown=0, NotChecked=0, Total=810900 [2021-01-26 18:17:16,462 INFO L78 Accepts]: Start accepts. Automaton has 12416 states. Word has length 254 [2021-01-26 18:17:16,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 18:17:16,462 INFO L481 AbstractCegarLoop]: Abstraction has 12416 states. [2021-01-26 18:17:16,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 6.363636363636363) internal successors, (280), 44 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:17:16,463 INFO L276 IsEmpty]: Start isEmpty. Operand 12416 states. [2021-01-26 18:17:16,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-01-26 18:17:16,473 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 18:17:16,473 INFO L504 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 18:17:16,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-26 18:17:16,675 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 18:17:16,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 18:17:16,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1831509927, now seen corresponding path program 16 times [2021-01-26 18:17:16,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 18:17:16,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982001081] [2021-01-26 18:17:16,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 18:17:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 18:17:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 0 proven. 1170 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-01-26 18:17:17,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982001081] [2021-01-26 18:17:17,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731058915] [2021-01-26 18:17:17,813 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:17:18,025 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 18:17:18,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 18:17:18,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-26 18:17:18,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 18:17:18,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 0 proven. 1170 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-01-26 18:17:18,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 18:17:18,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2021-01-26 18:17:18,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39105196] [2021-01-26 18:17:18,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-01-26 18:17:18,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 18:17:18,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-01-26 18:17:18,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2021-01-26 18:17:18,252 INFO L87 Difference]: Start difference. First operand 12416 states. Second operand has 35 states, 35 states have (on average 6.742857142857143) internal successors, (236), 35 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:17:19,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 18:17:19,920 INFO L93 Difference]: Finished difference Result 13164 states and 26288 transitions. [2021-01-26 18:17:19,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-01-26 18:17:19,922 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 6.742857142857143) internal successors, (236), 35 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 273 [2021-01-26 18:17:19,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 18:17:19,937 INFO L225 Difference]: With dead ends: 13164 [2021-01-26 18:17:19,937 INFO L226 Difference]: Without dead ends: 13164 [2021-01-26 18:17:19,938 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2021-01-26 18:17:19,938 INFO L78 Accepts]: Start accepts. Automaton has 13164 states. Word has length 273 [2021-01-26 18:17:19,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 18:17:19,939 INFO L481 AbstractCegarLoop]: Abstraction has 13164 states. [2021-01-26 18:17:19,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 6.742857142857143) internal successors, (236), 35 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:17:19,939 INFO L276 IsEmpty]: Start isEmpty. Operand 13164 states. [2021-01-26 18:17:19,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-01-26 18:17:19,956 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 18:17:19,956 INFO L504 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 18:17:20,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:17:20,170 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 18:17:20,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 18:17:20,171 INFO L82 PathProgramCache]: Analyzing trace with hash -237079865, now seen corresponding path program 17 times [2021-01-26 18:17:20,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 18:17:20,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428771125] [2021-01-26 18:17:20,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 18:17:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 18:17:21,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1511 backedges. 0 proven. 1336 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-01-26 18:17:21,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428771125] [2021-01-26 18:17:21,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241385981] [2021-01-26 18:17:21,392 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:17:21,608 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-01-26 18:17:21,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 18:17:21,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-26 18:17:21,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 18:17:22,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1511 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2021-01-26 18:17:22,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 18:17:22,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 17] total 50 [2021-01-26 18:17:22,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763562321] [2021-01-26 18:17:22,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-01-26 18:17:22,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 18:17:22,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-01-26 18:17:22,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=2048, Unknown=0, NotChecked=0, Total=2450 [2021-01-26 18:17:22,624 INFO L87 Difference]: Start difference. First operand 13164 states. Second operand has 50 states, 50 states have (on average 6.2) internal successors, (310), 50 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:22:10,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 18:22:10,505 INFO L93 Difference]: Finished difference Result 15544 states and 31048 transitions. [2021-01-26 18:22:10,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1151 states. [2021-01-26 18:22:10,505 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 6.2) internal successors, (310), 50 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 284 [2021-01-26 18:22:10,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 18:22:10,519 INFO L225 Difference]: With dead ends: 15544 [2021-01-26 18:22:10,519 INFO L226 Difference]: Without dead ends: 15544 [2021-01-26 18:22:10,585 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 1537 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 1172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695432 ImplicationChecksByTransitivity, 281.3s TimeCoverageRelationStatistics Valid=240556, Invalid=1136546, Unknown=0, NotChecked=0, Total=1377102 [2021-01-26 18:22:10,585 INFO L78 Accepts]: Start accepts. Automaton has 15544 states. Word has length 284 [2021-01-26 18:22:10,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 18:22:10,585 INFO L481 AbstractCegarLoop]: Abstraction has 15544 states. [2021-01-26 18:22:10,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 6.2) internal successors, (310), 50 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:22:10,586 INFO L276 IsEmpty]: Start isEmpty. Operand 15544 states. [2021-01-26 18:22:10,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2021-01-26 18:22:10,603 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 18:22:10,603 INFO L504 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 18:22:10,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:22:10,817 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 18:22:10,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 18:22:10,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1102218365, now seen corresponding path program 18 times [2021-01-26 18:22:10,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 18:22:10,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686561587] [2021-01-26 18:22:10,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 18:22:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 18:22:12,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 0 proven. 1513 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-01-26 18:22:12,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686561587] [2021-01-26 18:22:12,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234033812] [2021-01-26 18:22:12,994 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 18:22:13,379 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-01-26 18:22:13,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 18:22:13,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-26 18:22:13,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 18:22:15,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 1513 trivial. 0 not checked. [2021-01-26 18:22:15,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 18:22:15,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 19] total 54 [2021-01-26 18:22:15,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378303205] [2021-01-26 18:22:15,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-01-26 18:22:15,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 18:22:15,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-01-26 18:22:15,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=2404, Unknown=0, NotChecked=0, Total=2862 [2021-01-26 18:22:15,050 INFO L87 Difference]: Start difference. First operand 15544 states. Second operand has 54 states, 54 states have (on average 6.092592592592593) internal successors, (329), 54 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 18:23:27,597 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 12 Received shutdown request... [2021-01-26 18:26:56,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1035 states. [2021-01-26 18:26:56,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-01-26 18:26:56,369 WARN L546 AbstractCegarLoop]: Verification canceled [2021-01-26 18:26:56,375 WARN L250 ceAbstractionStarter]: Timeout [2021-01-26 18:26:56,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.01 06:26:56 BasicIcfg [2021-01-26 18:26:56,375 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-26 18:26:56,376 INFO L168 Benchmark]: Toolchain (without parser) took 805596.20 ms. Allocated memory was 320.9 MB in the beginning and 2.0 GB in the end (delta: 1.7 GB). Free memory was 294.7 MB in the beginning and 1.0 GB in the end (delta: -753.3 MB). Peak memory consumption was 949.7 MB. Max. memory is 16.0 GB. [2021-01-26 18:26:56,377 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 320.9 MB. Free memory is still 291.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-26 18:26:56,377 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1096.71 ms. Allocated memory is still 320.9 MB. Free memory was 293.7 MB in the beginning and 248.1 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.2 MB. Max. memory is 16.0 GB. [2021-01-26 18:26:56,378 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.55 ms. Allocated memory is still 320.9 MB. Free memory was 248.1 MB in the beginning and 246.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-26 18:26:56,378 INFO L168 Benchmark]: Boogie Preprocessor took 33.98 ms. Allocated memory is still 320.9 MB. Free memory was 246.0 MB in the beginning and 244.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-26 18:26:56,379 INFO L168 Benchmark]: RCFGBuilder took 853.40 ms. Allocated memory is still 320.9 MB. Free memory was 243.9 MB in the beginning and 217.7 MB in the end (delta: 26.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-01-26 18:26:56,379 INFO L168 Benchmark]: TraceAbstraction took 803519.32 ms. Allocated memory was 320.9 MB in the beginning and 2.0 GB in the end (delta: 1.7 GB). Free memory was 216.6 MB in the beginning and 1.0 GB in the end (delta: -831.3 MB). Peak memory consumption was 873.0 MB. Max. memory is 16.0 GB. [2021-01-26 18:26:56,382 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 320.9 MB. Free memory is still 291.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 1096.71 ms. Allocated memory is still 320.9 MB. Free memory was 293.7 MB in the beginning and 248.1 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 68.55 ms. Allocated memory is still 320.9 MB. Free memory was 248.1 MB in the beginning and 246.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 33.98 ms. Allocated memory is still 320.9 MB. Free memory was 246.0 MB in the beginning and 244.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 853.40 ms. Allocated memory is still 320.9 MB. Free memory was 243.9 MB in the beginning and 217.7 MB in the end (delta: 26.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 803519.32 ms. Allocated memory was 320.9 MB in the beginning and 2.0 GB in the end (delta: 1.7 GB). Free memory was 216.6 MB in the beginning and 1.0 GB in the end (delta: -831.3 MB). Peak memory consumption was 873.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 12]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 12). Cancelled while BasicCegarLoop was constructing difference of abstraction (15544states) and FLOYD_HOARE automaton (currently 1035 states, 54 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 1061 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 83 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 803.3s, OverallIterations: 21, TraceHistogramMax: 17, AutomataDifference: 779.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2073 SDtfs, 60941 SDslu, 28518 SDs, 0 SdLazy, 5091 SolverSat, 5024 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8512 GetRequests, 3806 SyntacticMatches, 0 SemanticMatches, 4705 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1922075 ImplicationChecksByTransitivity, 759.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15544occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 14.4s InterpolantComputationTime, 6745 NumberOfCodeBlocks, 6591 NumberOfCodeBlocksAsserted, 118 NumberOfCheckSat, 6706 ConstructedInterpolants, 0 QuantifiedInterpolants, 3059940 SizeOfPredicates, 252 NumberOfNonLiveVariables, 6699 ConjunctsInSsa, 270 ConjunctsInUnsatCore, 39 InterpolantComputations, 3 PerfectInterpolantSequences, 7175/21263 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown