/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/time_var_mutex.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 11:14:43,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 11:14:43,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 11:14:43,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 11:14:43,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 11:14:43,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 11:14:43,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 11:14:43,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 11:14:43,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 11:14:43,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 11:14:43,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 11:14:43,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 11:14:43,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 11:14:43,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 11:14:43,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 11:14:43,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 11:14:43,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 11:14:43,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 11:14:43,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 11:14:43,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 11:14:43,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 11:14:43,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 11:14:43,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 11:14:43,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 11:14:43,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 11:14:43,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 11:14:43,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 11:14:43,987 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 11:14:43,987 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 11:14:43,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 11:14:43,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 11:14:43,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 11:14:43,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 11:14:43,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 11:14:43,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 11:14:43,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 11:14:43,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 11:14:43,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 11:14:43,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 11:14:43,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 11:14:43,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 11:14:44,003 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-PN-NoLbe.epf [2021-06-10 11:14:44,038 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 11:14:44,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 11:14:44,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 11:14:44,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 11:14:44,041 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 11:14:44,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 11:14:44,042 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 11:14:44,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 11:14:44,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 11:14:44,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 11:14:44,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 11:14:44,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 11:14:44,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 11:14:44,043 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 11:14:44,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 11:14:44,044 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 11:14:44,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 11:14:44,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 11:14:44,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 11:14:44,044 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 11:14:44,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 11:14:44,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 11:14:44,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 11:14:44,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 11:14:44,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 11:14:44,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 11:14:44,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 11:14:44,046 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 11:14:44,046 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 11:14:44,046 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 11:14:44,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 11:14:44,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 11:14:44,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 11:14:44,386 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 11:14:44,388 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 11:14:44,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/time_var_mutex.i [2021-06-10 11:14:44,441 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85660a4d3/f2f3e9cc3bb64e41b11fdc49773cef8d/FLAGb8693bb6f [2021-06-10 11:14:44,888 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 11:14:44,888 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i [2021-06-10 11:14:44,910 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85660a4d3/f2f3e9cc3bb64e41b11fdc49773cef8d/FLAGb8693bb6f [2021-06-10 11:14:45,247 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85660a4d3/f2f3e9cc3bb64e41b11fdc49773cef8d [2021-06-10 11:14:45,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 11:14:45,251 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 11:14:45,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 11:14:45,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 11:14:45,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 11:14:45,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 11:14:45" (1/1) ... [2021-06-10 11:14:45,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c7e608c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:14:45, skipping insertion in model container [2021-06-10 11:14:45,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 11:14:45" (1/1) ... [2021-06-10 11:14:45,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 11:14:45,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 11:14:45,617 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i[30247,30260] [2021-06-10 11:14:45,622 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i[30452,30465] [2021-06-10 11:14:45,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 11:14:45,638 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 11:14:45,677 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i[30247,30260] [2021-06-10 11:14:45,684 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i[30452,30465] [2021-06-10 11:14:45,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 11:14:45,745 INFO L208 MainTranslator]: Completed translation [2021-06-10 11:14:45,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:14:45 WrapperNode [2021-06-10 11:14:45,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 11:14:45,747 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 11:14:45,748 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 11:14:45,748 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 11:14:45,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:14:45" (1/1) ... [2021-06-10 11:14:45,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:14:45" (1/1) ... [2021-06-10 11:14:45,784 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 11:14:45,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 11:14:45,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 11:14:45,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 11:14:45,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:14:45" (1/1) ... [2021-06-10 11:14:45,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:14:45" (1/1) ... [2021-06-10 11:14:45,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:14:45" (1/1) ... [2021-06-10 11:14:45,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:14:45" (1/1) ... [2021-06-10 11:14:45,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:14:45" (1/1) ... [2021-06-10 11:14:45,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:14:45" (1/1) ... [2021-06-10 11:14:45,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:14:45" (1/1) ... [2021-06-10 11:14:45,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 11:14:45,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 11:14:45,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 11:14:45,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 11:14:45,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:14:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 11:14:45,864 INFO L130 BoogieDeclarations]: Found specification of procedure allocator [2021-06-10 11:14:45,864 INFO L138 BoogieDeclarations]: Found implementation of procedure allocator [2021-06-10 11:14:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-10 11:14:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure de_allocator [2021-06-10 11:14:45,865 INFO L138 BoogieDeclarations]: Found implementation of procedure de_allocator [2021-06-10 11:14:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 11:14:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-06-10 11:14:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 11:14:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 11:14:45,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 11:14:45,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 11:14:45,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 11:14:45,867 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 11:14:46,163 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 11:14:46,163 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-06-10 11:14:46,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 11:14:46 BoogieIcfgContainer [2021-06-10 11:14:46,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 11:14:46,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 11:14:46,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 11:14:46,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 11:14:46,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 11:14:45" (1/3) ... [2021-06-10 11:14:46,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76cf77ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 11:14:46, skipping insertion in model container [2021-06-10 11:14:46,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:14:45" (2/3) ... [2021-06-10 11:14:46,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76cf77ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 11:14:46, skipping insertion in model container [2021-06-10 11:14:46,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 11:14:46" (3/3) ... [2021-06-10 11:14:46,172 INFO L111 eAbstractionObserver]: Analyzing ICFG time_var_mutex.i [2021-06-10 11:14:46,177 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 11:14:46,180 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-06-10 11:14:46,180 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 11:14:46,222 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,223 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,223 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,223 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,224 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,225 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,225 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,225 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,225 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,225 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,226 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,226 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,229 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,230 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,230 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,230 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,231 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,231 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,231 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,232 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,233 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,233 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,233 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,233 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,234 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,234 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,234 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,234 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,235 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,235 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,236 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,236 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,236 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,236 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,237 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,237 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,239 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,240 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,240 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,240 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,241 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,241 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,253 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,254 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,254 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,254 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,254 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:14:46,266 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-10 11:14:46,282 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-06-10 11:14:46,309 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 11:14:46,310 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 11:14:46,310 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 11:14:46,310 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 11:14:46,310 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 11:14:46,310 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 11:14:46,310 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 11:14:46,310 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 11:14:46,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 90 transitions, 202 flow [2021-06-10 11:14:46,380 INFO L129 PetriNetUnfolder]: 6/90 cut-off events. [2021-06-10 11:14:46,380 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-10 11:14:46,385 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 90 events. 6/90 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 113 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 59. Up to 3 conditions per place. [2021-06-10 11:14:46,385 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 90 transitions, 202 flow [2021-06-10 11:14:46,400 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 78 transitions, 168 flow [2021-06-10 11:14:46,416 INFO L129 PetriNetUnfolder]: 2/57 cut-off events. [2021-06-10 11:14:46,416 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 11:14:46,416 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 11:14:46,417 INFO L263 CegarLoopForPetriNet]: 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] [2021-06-10 11:14:46,417 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 11:14:46,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 11:14:46,424 INFO L82 PathProgramCache]: Analyzing trace with hash -483640185, now seen corresponding path program 1 times [2021-06-10 11:14:46,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 11:14:46,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055991534] [2021-06-10 11:14:46,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 11:14:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 11:14:46,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:46,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:14:46,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:46,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 11:14:46,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:46,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:14:46,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 11:14:46,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055991534] [2021-06-10 11:14:46,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 11:14:46,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 11:14:46,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183628672] [2021-06-10 11:14:46,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 11:14:46,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 11:14:46,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 11:14:46,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 11:14:46,727 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 90 [2021-06-10 11:14:46,734 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 78 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:14:46,734 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 11:14:46,734 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 90 [2021-06-10 11:14:46,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 11:14:46,781 INFO L129 PetriNetUnfolder]: 1/74 cut-off events. [2021-06-10 11:14:46,781 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-10 11:14:46,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 74 events. 1/74 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 4/74 useless extension candidates. Maximal degree in co-relation 41. Up to 3 conditions per place. [2021-06-10 11:14:46,783 INFO L132 encePairwiseOnDemand]: 84/90 looper letters, 2 selfloop transitions, 2 changer transitions 1/72 dead transitions. [2021-06-10 11:14:46,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 72 transitions, 164 flow [2021-06-10 11:14:46,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 11:14:46,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 11:14:46,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2021-06-10 11:14:46,800 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9222222222222223 [2021-06-10 11:14:46,800 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 249 transitions. [2021-06-10 11:14:46,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 249 transitions. [2021-06-10 11:14:46,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 11:14:46,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 249 transitions. [2021-06-10 11:14:46,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:14:46,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:14:46,821 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:14:46,822 INFO L185 Difference]: Start difference. First operand has 79 places, 78 transitions, 168 flow. Second operand 3 states and 249 transitions. [2021-06-10 11:14:46,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 72 transitions, 164 flow [2021-06-10 11:14:46,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 72 transitions, 156 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-10 11:14:46,833 INFO L241 Difference]: Finished difference. Result has 75 places, 71 transitions, 150 flow [2021-06-10 11:14:46,834 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2021-06-10 11:14:46,835 INFO L343 CegarLoopForPetriNet]: 79 programPoint places, -4 predicate places. [2021-06-10 11:14:46,835 INFO L480 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 150 flow [2021-06-10 11:14:46,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:14:46,835 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 11:14:46,835 INFO L263 CegarLoopForPetriNet]: 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] [2021-06-10 11:14:46,836 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 11:14:46,836 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 11:14:46,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 11:14:46,836 INFO L82 PathProgramCache]: Analyzing trace with hash -844229860, now seen corresponding path program 1 times [2021-06-10 11:14:46,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 11:14:46,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158663733] [2021-06-10 11:14:46,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 11:14:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 11:14:46,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:46,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:14:46,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:46,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 11:14:46,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:46,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:14:46,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 11:14:46,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158663733] [2021-06-10 11:14:46,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 11:14:46,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 11:14:46,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043979884] [2021-06-10 11:14:46,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 11:14:46,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 11:14:46,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 11:14:46,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 11:14:46,891 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 90 [2021-06-10 11:14:46,891 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:14:46,891 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 11:14:46,891 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 90 [2021-06-10 11:14:46,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 11:14:46,935 INFO L129 PetriNetUnfolder]: 8/118 cut-off events. [2021-06-10 11:14:46,935 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 11:14:46,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 118 events. 8/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 266 event pairs, 2 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 100. Up to 14 conditions per place. [2021-06-10 11:14:46,937 INFO L132 encePairwiseOnDemand]: 84/90 looper letters, 6 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2021-06-10 11:14:46,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 74 transitions, 176 flow [2021-06-10 11:14:46,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 11:14:46,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 11:14:46,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2021-06-10 11:14:46,943 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9111111111111111 [2021-06-10 11:14:46,943 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2021-06-10 11:14:46,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2021-06-10 11:14:46,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 11:14:46,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2021-06-10 11:14:46,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:14:46,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:14:46,949 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:14:46,950 INFO L185 Difference]: Start difference. First operand has 75 places, 71 transitions, 150 flow. Second operand 3 states and 246 transitions. [2021-06-10 11:14:46,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 74 transitions, 176 flow [2021-06-10 11:14:46,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 74 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 11:14:46,952 INFO L241 Difference]: Finished difference. Result has 76 places, 73 transitions, 174 flow [2021-06-10 11:14:46,952 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=76, PETRI_TRANSITIONS=73} [2021-06-10 11:14:46,953 INFO L343 CegarLoopForPetriNet]: 79 programPoint places, -3 predicate places. [2021-06-10 11:14:46,953 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 73 transitions, 174 flow [2021-06-10 11:14:46,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:14:46,953 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 11:14:46,953 INFO L263 CegarLoopForPetriNet]: 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] [2021-06-10 11:14:46,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 11:14:46,954 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 11:14:46,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 11:14:46,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1521089219, now seen corresponding path program 1 times [2021-06-10 11:14:46,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 11:14:46,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388494830] [2021-06-10 11:14:46,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 11:14:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 11:14:46,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:46,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:14:46,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:46,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 11:14:46,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:46,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:14:46,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 11:14:46,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388494830] [2021-06-10 11:14:46,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 11:14:46,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 11:14:46,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173208700] [2021-06-10 11:14:46,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 11:14:46,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 11:14:46,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 11:14:46,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 11:14:47,000 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 90 [2021-06-10 11:14:47,000 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 73 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:14:47,000 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 11:14:47,000 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 90 [2021-06-10 11:14:47,000 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 11:14:47,025 INFO L129 PetriNetUnfolder]: 3/103 cut-off events. [2021-06-10 11:14:47,025 INFO L130 PetriNetUnfolder]: For 13/15 co-relation queries the response was YES. [2021-06-10 11:14:47,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 103 events. 3/103 cut-off events. For 13/15 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 199 event pairs, 2 based on Foata normal form. 5/106 useless extension candidates. Maximal degree in co-relation 83. Up to 11 conditions per place. [2021-06-10 11:14:47,025 INFO L132 encePairwiseOnDemand]: 86/90 looper letters, 6 selfloop transitions, 2 changer transitions 1/72 dead transitions. [2021-06-10 11:14:47,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 72 transitions, 184 flow [2021-06-10 11:14:47,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 11:14:47,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 11:14:47,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2021-06-10 11:14:47,027 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9037037037037037 [2021-06-10 11:14:47,027 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2021-06-10 11:14:47,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2021-06-10 11:14:47,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 11:14:47,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2021-06-10 11:14:47,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:14:47,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:14:47,029 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:14:47,029 INFO L185 Difference]: Start difference. First operand has 76 places, 73 transitions, 174 flow. Second operand 3 states and 244 transitions. [2021-06-10 11:14:47,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 72 transitions, 184 flow [2021-06-10 11:14:47,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 72 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 11:14:47,031 INFO L241 Difference]: Finished difference. Result has 77 places, 71 transitions, 168 flow [2021-06-10 11:14:47,032 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2021-06-10 11:14:47,032 INFO L343 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2021-06-10 11:14:47,032 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 168 flow [2021-06-10 11:14:47,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:14:47,032 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 11:14:47,032 INFO L263 CegarLoopForPetriNet]: 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] [2021-06-10 11:14:47,033 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 11:14:47,033 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 11:14:47,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 11:14:47,033 INFO L82 PathProgramCache]: Analyzing trace with hash 2004429997, now seen corresponding path program 1 times [2021-06-10 11:14:47,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 11:14:47,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998813805] [2021-06-10 11:14:47,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 11:14:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 11:14:47,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:47,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:14:47,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:47,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 11:14:47,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:47,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:14:47,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 11:14:47,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998813805] [2021-06-10 11:14:47,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 11:14:47,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 11:14:47,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701145148] [2021-06-10 11:14:47,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 11:14:47,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 11:14:47,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 11:14:47,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 11:14:47,082 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 90 [2021-06-10 11:14:47,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:14:47,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 11:14:47,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 90 [2021-06-10 11:14:47,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 11:14:47,101 INFO L129 PetriNetUnfolder]: 1/118 cut-off events. [2021-06-10 11:14:47,101 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-06-10 11:14:47,102 INFO L84 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 118 events. 1/118 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 274 event pairs, 1 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 87. Up to 12 conditions per place. [2021-06-10 11:14:47,102 INFO L132 encePairwiseOnDemand]: 88/90 looper letters, 3 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2021-06-10 11:14:47,102 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 71 transitions, 176 flow [2021-06-10 11:14:47,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 11:14:47,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 11:14:47,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2021-06-10 11:14:47,104 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9074074074074074 [2021-06-10 11:14:47,104 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2021-06-10 11:14:47,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2021-06-10 11:14:47,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 11:14:47,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2021-06-10 11:14:47,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:14:47,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:14:47,106 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:14:47,106 INFO L185 Difference]: Start difference. First operand has 77 places, 71 transitions, 168 flow. Second operand 3 states and 245 transitions. [2021-06-10 11:14:47,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 71 transitions, 176 flow [2021-06-10 11:14:47,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 71 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 11:14:47,109 INFO L241 Difference]: Finished difference. Result has 79 places, 71 transitions, 171 flow [2021-06-10 11:14:47,109 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2021-06-10 11:14:47,109 INFO L343 CegarLoopForPetriNet]: 79 programPoint places, 0 predicate places. [2021-06-10 11:14:47,109 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 171 flow [2021-06-10 11:14:47,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:14:47,110 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 11:14:47,110 INFO L263 CegarLoopForPetriNet]: 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] [2021-06-10 11:14:47,110 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 11:14:47,110 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 11:14:47,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 11:14:47,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1939004893, now seen corresponding path program 2 times [2021-06-10 11:14:47,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 11:14:47,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521151806] [2021-06-10 11:14:47,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 11:14:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 11:14:47,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:47,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:14:47,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:47,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 11:14:47,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:47,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:14:47,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:47,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 11:14:47,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:14:47,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:14:47,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 11:14:47,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521151806] [2021-06-10 11:14:47,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 11:14:47,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 11:14:47,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079039204] [2021-06-10 11:14:47,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 11:14:47,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 11:14:47,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 11:14:47,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 11:14:47,168 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 90 [2021-06-10 11:14:47,168 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:14:47,169 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 11:14:47,169 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 90 [2021-06-10 11:14:47,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 11:14:47,247 INFO L129 PetriNetUnfolder]: 6/107 cut-off events. [2021-06-10 11:14:47,247 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2021-06-10 11:14:47,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 107 events. 6/107 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 196 event pairs, 1 based on Foata normal form. 4/110 useless extension candidates. Maximal degree in co-relation 117. Up to 15 conditions per place. [2021-06-10 11:14:47,248 INFO L132 encePairwiseOnDemand]: 83/90 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2021-06-10 11:14:47,248 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 71 transitions, 217 flow [2021-06-10 11:14:47,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 11:14:47,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 11:14:47,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 346 transitions. [2021-06-10 11:14:47,253 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7688888888888888 [2021-06-10 11:14:47,253 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 346 transitions. [2021-06-10 11:14:47,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 346 transitions. [2021-06-10 11:14:47,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 11:14:47,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 346 transitions. [2021-06-10 11:14:47,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:14:47,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:14:47,256 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:14:47,256 INFO L185 Difference]: Start difference. First operand has 79 places, 71 transitions, 171 flow. Second operand 5 states and 346 transitions. [2021-06-10 11:14:47,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 71 transitions, 217 flow [2021-06-10 11:14:47,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 71 transitions, 200 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-06-10 11:14:47,260 INFO L241 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2021-06-10 11:14:47,260 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2021-06-10 11:14:47,260 INFO L343 CegarLoopForPetriNet]: 79 programPoint places, -4 predicate places. [2021-06-10 11:14:47,260 INFO L480 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2021-06-10 11:14:47,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:14:47,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 11:14:47,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 11:14:47 BasicIcfg [2021-06-10 11:14:47,265 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 11:14:47,268 INFO L168 Benchmark]: Toolchain (without parser) took 2015.06 ms. Allocated memory is still 362.8 MB. Free memory was 325.5 MB in the beginning and 192.3 MB in the end (delta: 133.2 MB). Peak memory consumption was 131.0 MB. Max. memory is 16.0 GB. [2021-06-10 11:14:47,268 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 362.8 MB. Free memory was 343.7 MB in the beginning and 343.6 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 11:14:47,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 493.23 ms. Allocated memory is still 362.8 MB. Free memory was 325.3 MB in the beginning and 326.5 MB in the end (delta: -1.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.0 GB. [2021-06-10 11:14:47,273 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.17 ms. Allocated memory is still 362.8 MB. Free memory was 326.5 MB in the beginning and 324.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 11:14:47,274 INFO L168 Benchmark]: Boogie Preprocessor took 17.23 ms. Allocated memory is still 362.8 MB. Free memory was 324.4 MB in the beginning and 323.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 11:14:47,274 INFO L168 Benchmark]: RCFGBuilder took 362.01 ms. Allocated memory is still 362.8 MB. Free memory was 323.4 MB in the beginning and 297.1 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-10 11:14:47,275 INFO L168 Benchmark]: TraceAbstraction took 1098.85 ms. Allocated memory is still 362.8 MB. Free memory was 296.1 MB in the beginning and 192.3 MB in the end (delta: 103.8 MB). Peak memory consumption was 102.8 MB. Max. memory is 16.0 GB. [2021-06-10 11:14:47,282 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 362.8 MB. Free memory was 343.7 MB in the beginning and 343.6 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 493.23 ms. Allocated memory is still 362.8 MB. Free memory was 325.3 MB in the beginning and 326.5 MB in the end (delta: -1.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 37.17 ms. Allocated memory is still 362.8 MB. Free memory was 326.5 MB in the beginning and 324.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 17.23 ms. Allocated memory is still 362.8 MB. Free memory was 324.4 MB in the beginning and 323.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 362.01 ms. Allocated memory is still 362.8 MB. Free memory was 323.4 MB in the beginning and 297.1 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1098.85 ms. Allocated memory is still 362.8 MB. Free memory was 296.1 MB in the beginning and 192.3 MB in the end (delta: 103.8 MB). Peak memory consumption was 102.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 702]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 710]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 84 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 15.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 955.7ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 337.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 89.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 36 SDtfs, 21 SDslu, 5 SDs, 0 SdLazy, 42 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 58.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred in iteration=2, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 25.7ms SsaConstructionTime, 107.5ms SatisfiabilityAnalysisTime, 233.8ms InterpolantComputationTime, 239 NumberOfCodeBlocks, 239 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 234 ConstructedInterpolants, 0 QuantifiedInterpolants, 350 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...