/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/time_var_mutex.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 13:03:02,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 13:03:02,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 13:03:02,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 13:03:02,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 13:03:02,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 13:03:02,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 13:03:02,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 13:03:02,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 13:03:02,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 13:03:02,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 13:03:02,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 13:03:02,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 13:03:02,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 13:03:02,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 13:03:02,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 13:03:02,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 13:03:02,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 13:03:02,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 13:03:02,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 13:03:02,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 13:03:02,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 13:03:02,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 13:03:02,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 13:03:02,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 13:03:02,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 13:03:02,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 13:03:02,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 13:03:02,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 13:03:02,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 13:03:02,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 13:03:02,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 13:03:02,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 13:03:02,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 13:03:02,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 13:03:02,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 13:03:02,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 13:03:02,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 13:03:02,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 13:03:02,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 13:03:02,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 13:03:02,139 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-RepeatedSemanticLbe.epf [2021-03-25 13:03:02,174 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 13:03:02,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 13:03:02,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 13:03:02,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 13:03:02,177 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 13:03:02,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 13:03:02,177 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 13:03:02,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 13:03:02,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 13:03:02,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 13:03:02,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 13:03:02,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 13:03:02,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 13:03:02,179 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 13:03:02,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 13:03:02,180 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 13:03:02,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 13:03:02,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 13:03:02,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 13:03:02,180 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 13:03:02,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 13:03:02,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 13:03:02,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 13:03:02,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 13:03:02,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 13:03:02,181 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 13:03:02,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 13:03:02,182 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 13:03:02,182 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 13:03:02,182 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 13:03:02,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 13:03:02,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 13:03:02,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 13:03:02,554 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 13:03:02,554 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 13:03:02,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/time_var_mutex.i [2021-03-25 13:03:02,617 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7b0bfd06/a07cf0f542c04bddb38ca44fc0545b1b/FLAG56cfc2cb2 [2021-03-25 13:03:03,038 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 13:03:03,039 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i [2021-03-25 13:03:03,048 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7b0bfd06/a07cf0f542c04bddb38ca44fc0545b1b/FLAG56cfc2cb2 [2021-03-25 13:03:03,344 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7b0bfd06/a07cf0f542c04bddb38ca44fc0545b1b [2021-03-25 13:03:03,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 13:03:03,347 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 13:03:03,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 13:03:03,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 13:03:03,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 13:03:03,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 01:03:03" (1/1) ... [2021-03-25 13:03:03,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e24931d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:03:03, skipping insertion in model container [2021-03-25 13:03:03,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 01:03:03" (1/1) ... [2021-03-25 13:03:03,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 13:03:03,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 13:03:03,674 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] [2021-03-25 13:03:03,678 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] [2021-03-25 13:03:03,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 13:03:03,689 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 13:03:03,715 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] [2021-03-25 13:03:03,720 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] [2021-03-25 13:03:03,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 13:03:03,774 INFO L208 MainTranslator]: Completed translation [2021-03-25 13:03:03,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:03:03 WrapperNode [2021-03-25 13:03:03,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 13:03:03,775 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 13:03:03,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 13:03:03,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 13:03:03,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:03:03" (1/1) ... [2021-03-25 13:03:03,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:03:03" (1/1) ... [2021-03-25 13:03:03,807 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 13:03:03,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 13:03:03,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 13:03:03,808 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 13:03:03,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:03:03" (1/1) ... [2021-03-25 13:03:03,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:03:03" (1/1) ... [2021-03-25 13:03:03,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:03:03" (1/1) ... [2021-03-25 13:03:03,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:03:03" (1/1) ... [2021-03-25 13:03:03,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:03:03" (1/1) ... [2021-03-25 13:03:03,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:03:03" (1/1) ... [2021-03-25 13:03:03,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:03:03" (1/1) ... [2021-03-25 13:03:03,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 13:03:03,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 13:03:03,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 13:03:03,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 13:03:03,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:03:03" (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 [2021-03-25 13:03:03,894 INFO L130 BoogieDeclarations]: Found specification of procedure allocator [2021-03-25 13:03:03,894 INFO L138 BoogieDeclarations]: Found implementation of procedure allocator [2021-03-25 13:03:03,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-25 13:03:03,894 INFO L130 BoogieDeclarations]: Found specification of procedure de_allocator [2021-03-25 13:03:03,895 INFO L138 BoogieDeclarations]: Found implementation of procedure de_allocator [2021-03-25 13:03:03,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 13:03:03,895 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-03-25 13:03:03,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 13:03:03,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 13:03:03,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 13:03:03,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 13:03:03,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 13:03:03,897 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 13:03:04,341 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 13:03:04,341 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-03-25 13:03:04,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 01:03:04 BoogieIcfgContainer [2021-03-25 13:03:04,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 13:03:04,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 13:03:04,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 13:03:04,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 13:03:04,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 01:03:03" (1/3) ... [2021-03-25 13:03:04,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2908cea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 01:03:04, skipping insertion in model container [2021-03-25 13:03:04,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:03:03" (2/3) ... [2021-03-25 13:03:04,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2908cea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 01:03:04, skipping insertion in model container [2021-03-25 13:03:04,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 01:03:04" (3/3) ... [2021-03-25 13:03:04,351 INFO L111 eAbstractionObserver]: Analyzing ICFG time_var_mutex.i [2021-03-25 13:03:04,355 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 13:03:04,359 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-25 13:03:04,360 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 13:03:04,402 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,403 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,403 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,403 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,403 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,404 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,404 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,404 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,404 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,405 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,405 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,405 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,409 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,409 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,409 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,410 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,410 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,410 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,411 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,412 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,412 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,413 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,413 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,413 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,413 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,414 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,414 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,414 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,414 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,414 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,415 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,415 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,416 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,416 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,416 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,417 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,421 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,422 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,422 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,422 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,423 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,423 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,432 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,432 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,433 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,433 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,433 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:03:04,450 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-25 13:03:04,466 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-25 13:03:04,496 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 13:03:04,496 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 13:03:04,496 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 13:03:04,497 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 13:03:04,497 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 13:03:04,497 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 13:03:04,497 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 13:03:04,497 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 13:03:04,512 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 90 transitions, 202 flow [2021-03-25 13:03:04,550 INFO L129 PetriNetUnfolder]: 6/90 cut-off events. [2021-03-25 13:03:04,551 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 13:03:04,554 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. [2021-03-25 13:03:04,555 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 90 transitions, 202 flow [2021-03-25 13:03:04,559 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 78 transitions, 168 flow [2021-03-25 13:03:04,566 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:03:04,581 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 78 transitions, 168 flow [2021-03-25 13:03:04,583 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 78 transitions, 168 flow [2021-03-25 13:03:04,585 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 78 transitions, 168 flow [2021-03-25 13:03:04,605 INFO L129 PetriNetUnfolder]: 5/80 cut-off events. [2021-03-25 13:03:04,605 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 13:03:04,606 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 80 events. 5/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 98 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 59. Up to 3 conditions per place. [2021-03-25 13:03:04,608 INFO L142 LiptonReduction]: Number of co-enabled transitions 976 [2021-03-25 13:03:06,364 INFO L154 LiptonReduction]: Checked pairs total: 1221 [2021-03-25 13:03:06,364 INFO L156 LiptonReduction]: Total number of compositions: 56 [2021-03-25 13:03:06,366 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1807 [2021-03-25 13:03:06,376 INFO L129 PetriNetUnfolder]: 2/23 cut-off events. [2021-03-25 13:03:06,377 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 13:03:06,377 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 13:03:06,378 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 13:03:06,378 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]=== [2021-03-25 13:03:06,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 13:03:06,382 INFO L82 PathProgramCache]: Analyzing trace with hash 2043042499, now seen corresponding path program 1 times [2021-03-25 13:03:06,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 13:03:06,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993924242] [2021-03-25 13:03:06,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 13:03:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 13:03:06,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:03:06,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:03:06,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:03:06,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 13:03:06,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:03:06,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:03:06,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 13:03:06,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993924242] [2021-03-25 13:03:06,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 13:03:06,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 13:03:06,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130345574] [2021-03-25 13:03:06,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 13:03:06,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 13:03:06,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 13:03:06,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 13:03:06,652 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 146 [2021-03-25 13:03:06,656 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:03:06,657 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 13:03:06,657 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 146 [2021-03-25 13:03:06,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 13:03:06,690 INFO L129 PetriNetUnfolder]: 1/32 cut-off events. [2021-03-25 13:03:06,690 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 13:03:06,690 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 32 events. 1/32 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 4/33 useless extension candidates. Maximal degree in co-relation 25. Up to 3 conditions per place. [2021-03-25 13:03:06,692 INFO L132 encePairwiseOnDemand]: 140/146 looper letters, 2 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2021-03-25 13:03:06,692 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 31 transitions, 82 flow [2021-03-25 13:03:06,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 13:03:06,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 13:03:06,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2021-03-25 13:03:06,708 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8287671232876712 [2021-03-25 13:03:06,709 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2021-03-25 13:03:06,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2021-03-25 13:03:06,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 13:03:06,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2021-03-25 13:03:06,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:03:06,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:03:06,728 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:03:06,730 INFO L185 Difference]: Start difference. First operand has 40 places, 39 transitions, 90 flow. Second operand 3 states and 363 transitions. [2021-03-25 13:03:06,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 31 transitions, 82 flow [2021-03-25 13:03:06,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 31 transitions, 74 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 13:03:06,733 INFO L241 Difference]: Finished difference. Result has 34 places, 31 transitions, 70 flow [2021-03-25 13:03:06,735 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2021-03-25 13:03:06,736 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, -6 predicate places. [2021-03-25 13:03:06,736 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:03:06,736 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 31 transitions, 70 flow [2021-03-25 13:03:06,736 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 31 transitions, 70 flow [2021-03-25 13:03:06,737 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 31 transitions, 70 flow [2021-03-25 13:03:06,766 INFO L129 PetriNetUnfolder]: 1/32 cut-off events. [2021-03-25 13:03:06,767 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 13:03:06,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 32 events. 1/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 43 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2021-03-25 13:03:06,767 INFO L142 LiptonReduction]: Number of co-enabled transitions 230 [2021-03-25 13:03:07,831 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2021-03-25 13:03:07,946 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-03-25 13:03:08,212 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2021-03-25 13:03:08,334 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-03-25 13:03:08,339 INFO L154 LiptonReduction]: Checked pairs total: 833 [2021-03-25 13:03:08,339 INFO L156 LiptonReduction]: Total number of compositions: 9 [2021-03-25 13:03:08,340 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1604 [2021-03-25 13:03:08,340 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 24 transitions, 58 flow [2021-03-25 13:03:08,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:03:08,341 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 13:03:08,341 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 13:03:08,341 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 13:03:08,342 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]=== [2021-03-25 13:03:08,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 13:03:08,342 INFO L82 PathProgramCache]: Analyzing trace with hash 564642134, now seen corresponding path program 1 times [2021-03-25 13:03:08,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 13:03:08,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606992389] [2021-03-25 13:03:08,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 13:03:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 13:03:08,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:03:08,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:03:08,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:03:08,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 13:03:08,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 13:03:08,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606992389] [2021-03-25 13:03:08,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 13:03:08,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 13:03:08,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740153316] [2021-03-25 13:03:08,386 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 13:03:08,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 13:03:08,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 13:03:08,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 13:03:08,388 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 155 [2021-03-25 13:03:08,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:03:08,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 13:03:08,389 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 155 [2021-03-25 13:03:08,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 13:03:08,408 INFO L129 PetriNetUnfolder]: 4/57 cut-off events. [2021-03-25 13:03:08,408 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 13:03:08,408 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 57 events. 4/57 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 231 event pairs, 1 based on Foata normal form. 4/55 useless extension candidates. Maximal degree in co-relation 68. Up to 15 conditions per place. [2021-03-25 13:03:08,409 INFO L132 encePairwiseOnDemand]: 150/155 looper letters, 5 selfloop transitions, 4 changer transitions 3/27 dead transitions. [2021-03-25 13:03:08,409 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 84 flow [2021-03-25 13:03:08,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 13:03:08,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 13:03:08,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 380 transitions. [2021-03-25 13:03:08,411 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8172043010752689 [2021-03-25 13:03:08,411 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 380 transitions. [2021-03-25 13:03:08,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 380 transitions. [2021-03-25 13:03:08,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 13:03:08,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 380 transitions. [2021-03-25 13:03:08,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:03:08,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:03:08,414 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:03:08,414 INFO L185 Difference]: Start difference. First operand has 27 places, 24 transitions, 58 flow. Second operand 3 states and 380 transitions. [2021-03-25 13:03:08,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 84 flow [2021-03-25 13:03:08,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 27 transitions, 78 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 13:03:08,416 INFO L241 Difference]: Finished difference. Result has 28 places, 23 transitions, 66 flow [2021-03-25 13:03:08,416 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2021-03-25 13:03:08,416 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, -12 predicate places. [2021-03-25 13:03:08,416 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:03:08,417 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 23 transitions, 66 flow [2021-03-25 13:03:08,417 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 23 transitions, 66 flow [2021-03-25 13:03:08,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 23 transitions, 66 flow [2021-03-25 13:03:08,421 INFO L129 PetriNetUnfolder]: 0/37 cut-off events. [2021-03-25 13:03:08,421 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 13:03:08,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 37 events. 0/37 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 115 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-03-25 13:03:08,422 INFO L142 LiptonReduction]: Number of co-enabled transitions 136 [2021-03-25 13:03:08,988 WARN L205 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 140 [2021-03-25 13:03:09,201 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-03-25 13:03:09,685 WARN L205 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 139 [2021-03-25 13:03:09,945 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2021-03-25 13:03:10,025 INFO L154 LiptonReduction]: Checked pairs total: 190 [2021-03-25 13:03:10,025 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 13:03:10,025 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1609 [2021-03-25 13:03:10,026 INFO L480 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 58 flow [2021-03-25 13:03:10,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:03:10,026 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 13:03:10,026 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 13:03:10,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 13:03:10,027 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]=== [2021-03-25 13:03:10,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 13:03:10,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1286169506, now seen corresponding path program 1 times [2021-03-25 13:03:10,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 13:03:10,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558451535] [2021-03-25 13:03:10,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 13:03:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 13:03:10,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:03:10,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:03:10,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:03:10,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 13:03:10,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 13:03:10,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558451535] [2021-03-25 13:03:10,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 13:03:10,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 13:03:10,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985588612] [2021-03-25 13:03:10,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 13:03:10,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 13:03:10,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 13:03:10,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 13:03:10,065 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 159 [2021-03-25 13:03:10,066 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:03:10,066 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 13:03:10,066 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 159 [2021-03-25 13:03:10,066 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 13:03:10,078 INFO L129 PetriNetUnfolder]: 0/31 cut-off events. [2021-03-25 13:03:10,078 INFO L130 PetriNetUnfolder]: For 9/19 co-relation queries the response was YES. [2021-03-25 13:03:10,078 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 31 events. 0/31 cut-off events. For 9/19 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 96 event pairs, 0 based on Foata normal form. 7/33 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-03-25 13:03:10,079 INFO L132 encePairwiseOnDemand]: 153/159 looper letters, 3 selfloop transitions, 5 changer transitions 0/19 dead transitions. [2021-03-25 13:03:10,079 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 74 flow [2021-03-25 13:03:10,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 13:03:10,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 13:03:10,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2021-03-25 13:03:10,080 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8050314465408805 [2021-03-25 13:03:10,081 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2021-03-25 13:03:10,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2021-03-25 13:03:10,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 13:03:10,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2021-03-25 13:03:10,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:03:10,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:03:10,084 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:03:10,084 INFO L185 Difference]: Start difference. First operand has 23 places, 19 transitions, 58 flow. Second operand 3 states and 384 transitions. [2021-03-25 13:03:10,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 74 flow [2021-03-25 13:03:10,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 19 transitions, 70 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 13:03:10,085 INFO L241 Difference]: Finished difference. Result has 25 places, 19 transitions, 71 flow [2021-03-25 13:03:10,085 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=25, PETRI_TRANSITIONS=19} [2021-03-25 13:03:10,085 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, -15 predicate places. [2021-03-25 13:03:10,085 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:03:10,085 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 19 transitions, 71 flow [2021-03-25 13:03:10,086 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 19 transitions, 71 flow [2021-03-25 13:03:10,086 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 25 places, 19 transitions, 71 flow [2021-03-25 13:03:10,089 INFO L129 PetriNetUnfolder]: 0/31 cut-off events. [2021-03-25 13:03:10,089 INFO L130 PetriNetUnfolder]: For 14/22 co-relation queries the response was YES. [2021-03-25 13:03:10,089 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 31 events. 0/31 cut-off events. For 14/22 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 102 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-03-25 13:03:10,090 INFO L142 LiptonReduction]: Number of co-enabled transitions 90 [2021-03-25 13:03:10,104 INFO L154 LiptonReduction]: Checked pairs total: 82 [2021-03-25 13:03:10,104 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 13:03:10,104 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 19 [2021-03-25 13:03:10,105 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 18 transitions, 64 flow [2021-03-25 13:03:10,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:03:10,105 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 13:03:10,106 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 13:03:10,106 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 13:03:10,106 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]=== [2021-03-25 13:03:10,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 13:03:10,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1042425021, now seen corresponding path program 1 times [2021-03-25 13:03:10,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 13:03:10,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467750788] [2021-03-25 13:03:10,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 13:03:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 13:03:10,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:03:10,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 13:03:10,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:03:10,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 13:03:10,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:03:10,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:03:10,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:03:10,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 13:03:10,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 13:03:10,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467750788] [2021-03-25 13:03:10,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 13:03:10,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 13:03:10,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121583276] [2021-03-25 13:03:10,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 13:03:10,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 13:03:10,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 13:03:10,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 13:03:10,185 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 159 [2021-03-25 13:03:10,185 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 18 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:03:10,185 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 13:03:10,185 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 159 [2021-03-25 13:03:10,185 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 13:03:10,246 INFO L129 PetriNetUnfolder]: 8/49 cut-off events. [2021-03-25 13:03:10,246 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2021-03-25 13:03:10,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 49 events. 8/49 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 166 event pairs, 1 based on Foata normal form. 3/42 useless extension candidates. Maximal degree in co-relation 104. Up to 19 conditions per place. [2021-03-25 13:03:10,247 INFO L132 encePairwiseOnDemand]: 152/159 looper letters, 5 selfloop transitions, 8 changer transitions 4/24 dead transitions. [2021-03-25 13:03:10,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 24 transitions, 120 flow [2021-03-25 13:03:10,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 13:03:10,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 13:03:10,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 456 transitions. [2021-03-25 13:03:10,251 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4779874213836478 [2021-03-25 13:03:10,251 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 456 transitions. [2021-03-25 13:03:10,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 456 transitions. [2021-03-25 13:03:10,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 13:03:10,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 456 transitions. [2021-03-25 13:03:10,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:03:10,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:03:10,257 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:03:10,257 INFO L185 Difference]: Start difference. First operand has 25 places, 18 transitions, 64 flow. Second operand 6 states and 456 transitions. [2021-03-25 13:03:10,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 24 transitions, 120 flow [2021-03-25 13:03:10,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 24 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 13:03:10,259 INFO L241 Difference]: Finished difference. Result has 29 places, 20 transitions, 85 flow [2021-03-25 13:03:10,259 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=85, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2021-03-25 13:03:10,260 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, -11 predicate places. [2021-03-25 13:03:10,260 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:03:10,260 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 20 transitions, 85 flow [2021-03-25 13:03:10,261 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 20 transitions, 85 flow [2021-03-25 13:03:10,261 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 20 transitions, 85 flow [2021-03-25 13:03:10,265 INFO L129 PetriNetUnfolder]: 1/38 cut-off events. [2021-03-25 13:03:10,265 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 13:03:10,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 38 events. 1/38 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 129 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 65. Up to 10 conditions per place. [2021-03-25 13:03:10,266 INFO L142 LiptonReduction]: Number of co-enabled transitions 52 [2021-03-25 13:03:10,498 INFO L154 LiptonReduction]: Checked pairs total: 13 [2021-03-25 13:03:10,498 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 13:03:10,498 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 238 [2021-03-25 13:03:10,501 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 86 flow [2021-03-25 13:03:10,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:03:10,501 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 13:03:10,501 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 13:03:10,502 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 13:03:10,502 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]=== [2021-03-25 13:03:10,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 13:03:10,502 INFO L82 PathProgramCache]: Analyzing trace with hash 621833872, now seen corresponding path program 1 times [2021-03-25 13:03:10,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 13:03:10,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039719947] [2021-03-25 13:03:10,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 13:03:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 13:03:10,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:03:10,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:03:10,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:03:10,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 13:03:10,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:03:10,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:03:10,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 13:03:10,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039719947] [2021-03-25 13:03:10,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 13:03:10,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 13:03:10,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390061418] [2021-03-25 13:03:10,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 13:03:10,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 13:03:10,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 13:03:10,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 13:03:10,549 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 163 [2021-03-25 13:03:10,549 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:03:10,550 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 13:03:10,550 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 163 [2021-03-25 13:03:10,550 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 13:03:10,565 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-03-25 13:03:10,565 INFO L130 PetriNetUnfolder]: For 30/38 co-relation queries the response was YES. [2021-03-25 13:03:10,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 14 events. 0/14 cut-off events. For 30/38 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 13 event pairs, 0 based on Foata normal form. 5/17 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-25 13:03:10,565 INFO L132 encePairwiseOnDemand]: 158/163 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2021-03-25 13:03:10,565 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 13 transitions, 69 flow [2021-03-25 13:03:10,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 13:03:10,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 13:03:10,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2021-03-25 13:03:10,571 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7689161554192229 [2021-03-25 13:03:10,571 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 376 transitions. [2021-03-25 13:03:10,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 376 transitions. [2021-03-25 13:03:10,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 13:03:10,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 376 transitions. [2021-03-25 13:03:10,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:03:10,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:03:10,574 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:03:10,574 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 86 flow. Second operand 3 states and 376 transitions. [2021-03-25 13:03:10,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 13 transitions, 69 flow [2021-03-25 13:03:10,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 13 transitions, 59 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-25 13:03:10,576 INFO L241 Difference]: Finished difference. Result has 23 places, 0 transitions, 0 flow [2021-03-25 13:03:10,576 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=23, PETRI_TRANSITIONS=0} [2021-03-25 13:03:10,576 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, -17 predicate places. [2021-03-25 13:03:10,576 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:03:10,576 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 0 transitions, 0 flow [2021-03-25 13:03:10,577 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 0 transitions, 0 flow [2021-03-25 13:03:10,577 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 13:03:10,577 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 13:03:10,577 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 13:03:10,577 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 13:03:10,577 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 13:03:10,578 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 13:03:10,578 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 13:03:10,578 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-25 13:03:10,578 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 13:03:10,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:03:10,579 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 13:03:10,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 01:03:10 BasicIcfg [2021-03-25 13:03:10,583 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 13:03:10,584 INFO L168 Benchmark]: Toolchain (without parser) took 7236.19 ms. Allocated memory was 343.9 MB in the beginning and 415.2 MB in the end (delta: 71.3 MB). Free memory was 307.5 MB in the beginning and 257.9 MB in the end (delta: 49.7 MB). Peak memory consumption was 123.4 MB. Max. memory is 16.0 GB. [2021-03-25 13:03:10,584 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 343.9 MB. Free memory is still 324.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 13:03:10,584 INFO L168 Benchmark]: CACSL2BoogieTranslator took 426.03 ms. Allocated memory is still 343.9 MB. Free memory was 307.3 MB in the beginning and 308.2 MB in the end (delta: -891.4 kB). Peak memory consumption was 9.1 MB. Max. memory is 16.0 GB. [2021-03-25 13:03:10,585 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.27 ms. Allocated memory is still 343.9 MB. Free memory was 308.2 MB in the beginning and 306.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 13:03:10,585 INFO L168 Benchmark]: Boogie Preprocessor took 19.48 ms. Allocated memory is still 343.9 MB. Free memory was 306.1 MB in the beginning and 305.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 13:03:10,586 INFO L168 Benchmark]: RCFGBuilder took 514.75 ms. Allocated memory is still 343.9 MB. Free memory was 305.0 MB in the beginning and 278.8 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-25 13:03:10,586 INFO L168 Benchmark]: TraceAbstraction took 6238.95 ms. Allocated memory was 343.9 MB in the beginning and 415.2 MB in the end (delta: 71.3 MB). Free memory was 277.7 MB in the beginning and 257.9 MB in the end (delta: 19.9 MB). Peak memory consumption was 93.3 MB. Max. memory is 16.0 GB. [2021-03-25 13:03:10,588 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 343.9 MB. Free memory is still 324.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 426.03 ms. Allocated memory is still 343.9 MB. Free memory was 307.3 MB in the beginning and 308.2 MB in the end (delta: -891.4 kB). Peak memory consumption was 9.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 32.27 ms. Allocated memory is still 343.9 MB. Free memory was 308.2 MB in the beginning and 306.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.48 ms. Allocated memory is still 343.9 MB. Free memory was 306.1 MB in the beginning and 305.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 514.75 ms. Allocated memory is still 343.9 MB. Free memory was 305.0 MB in the beginning and 278.8 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6238.95 ms. Allocated memory was 343.9 MB in the beginning and 415.2 MB in the end (delta: 71.3 MB). Free memory was 277.7 MB in the beginning and 257.9 MB in the end (delta: 19.9 MB). Peak memory consumption was 93.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1781.0ms, 79 PlacesBefore, 40 PlacesAfterwards, 78 TransitionsBefore, 39 TransitionsAfterwards, 976 CoEnabledTransitionPairs, 4 FixpointIterations, 25 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 9 ConcurrentYvCompositions, 0 ChoiceCompositions, 56 TotalNumberOfCompositions, 1221 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 866, positive: 824, positive conditional: 0, positive unconditional: 824, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 634, positive: 614, positive conditional: 0, positive unconditional: 614, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 634, positive: 614, positive conditional: 0, positive unconditional: 614, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 634, positive: 594, positive conditional: 0, positive unconditional: 594, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 40, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 132, positive: 59, positive conditional: 0, positive unconditional: 59, negative: 73, negative conditional: 0, negative unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 866, positive: 210, positive conditional: 0, positive unconditional: 210, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 634, unknown conditional: 0, unknown unconditional: 634] , Statistics on independence cache: Total cache size (in pairs): 84, Positive cache size: 75, Positive conditional cache size: 0, Positive unconditional cache size: 75, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1603.1ms, 34 PlacesBefore, 27 PlacesAfterwards, 31 TransitionsBefore, 24 TransitionsAfterwards, 230 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 9 TotalNumberOfCompositions, 833 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 346, positive: 271, positive conditional: 0, positive unconditional: 271, negative: 75, negative conditional: 0, negative unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 56, positive: 47, positive conditional: 0, positive unconditional: 47, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 56, positive: 47, positive conditional: 0, positive unconditional: 47, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 56, positive: 43, positive conditional: 0, positive unconditional: 43, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 13, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 37, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 346, positive: 224, positive conditional: 0, positive unconditional: 224, negative: 66, negative conditional: 0, negative unconditional: 66, unknown: 56, unknown conditional: 0, unknown unconditional: 56] , Statistics on independence cache: Total cache size (in pairs): 117, Positive cache size: 100, Positive conditional cache size: 0, Positive unconditional cache size: 100, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1608.0ms, 28 PlacesBefore, 23 PlacesAfterwards, 23 TransitionsBefore, 19 TransitionsAfterwards, 136 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 190 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 82, positive: 62, positive conditional: 0, positive unconditional: 62, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 18, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 18, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 18, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 45, positive: 26, positive conditional: 0, positive unconditional: 26, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 82, positive: 46, positive conditional: 0, positive unconditional: 46, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 18, unknown conditional: 0, unknown unconditional: 18] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 68, Positive conditional cache size: 0, Positive unconditional cache size: 68, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 18.2ms, 25 PlacesBefore, 25 PlacesAfterwards, 19 TransitionsBefore, 18 TransitionsAfterwards, 90 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 82 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 46, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 12, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 46, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 68, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 237.3ms, 29 PlacesBefore, 27 PlacesAfterwards, 20 TransitionsBefore, 18 TransitionsAfterwards, 52 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 13 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 13, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 35, Positive conditional cache size: 0, Positive unconditional cache size: 35, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.0ms, 23 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 35, Positive conditional cache size: 0, Positive unconditional cache size: 35, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - 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: 4.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 6088.3ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 248.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1874.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 29 SDtfs, 21 SDslu, 3 SDs, 0 SdLazy, 38 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 51.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 43.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=0, InterpolantAutomatonStates: 18, 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: 22.8ms SsaConstructionTime, 105.6ms SatisfiabilityAnalysisTime, 214.7ms InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 110 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...