/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-28 15:43:51,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-28 15:43:51,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-28 15:43:51,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-28 15:43:51,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-28 15:43:51,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-28 15:43:51,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-28 15:43:51,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-28 15:43:51,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-28 15:43:51,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-28 15:43:51,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-28 15:43:51,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-28 15:43:51,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-28 15:43:51,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-28 15:43:51,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-28 15:43:51,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-28 15:43:51,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-28 15:43:51,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-28 15:43:51,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-28 15:43:51,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-28 15:43:51,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-28 15:43:51,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-28 15:43:51,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-28 15:43:51,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-28 15:43:51,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-28 15:43:51,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-28 15:43:51,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-28 15:43:51,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-28 15:43:51,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-28 15:43:51,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-28 15:43:51,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-28 15:43:51,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-28 15:43:51,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-28 15:43:51,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-28 15:43:51,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-28 15:43:51,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-28 15:43:51,460 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-RepeatedSemanticLbeWithPredicates.epf [2021-04-28 15:43:51,514 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-28 15:43:51,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-28 15:43:51,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-28 15:43:51,520 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-28 15:43:51,520 INFO L138 SettingsManager]: * Use SBE=true [2021-04-28 15:43:51,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-28 15:43:51,520 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-28 15:43:51,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-28 15:43:51,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-28 15:43:51,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-28 15:43:51,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-28 15:43:51,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-28 15:43:51,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-28 15:43:51,523 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-28 15:43:51,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-28 15:43:51,524 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-28 15:43:51,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-28 15:43:51,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-28 15:43:51,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-28 15:43:51,525 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-28 15:43:51,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-28 15:43:51,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-28 15:43:51,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-28 15:43:51,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-28 15:43:51,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-28 15:43:51,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-28 15:43:51,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-28 15:43:51,526 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-28 15:43:51,527 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-28 15:43:51,527 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-28 15:43:51,527 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-28 15:43:51,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-28 15:43:51,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-28 15:43:51,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-28 15:43:51,960 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-28 15:43:51,961 INFO L275 PluginConnector]: CDTParser initialized [2021-04-28 15:43:51,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2021-04-28 15:43:52,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c66de0b8/91780e9bcb4c4daa96e801233093d962/FLAG49aafc4d8 [2021-04-28 15:43:52,787 INFO L306 CDTParser]: Found 1 translation units. [2021-04-28 15:43:52,788 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2021-04-28 15:43:52,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c66de0b8/91780e9bcb4c4daa96e801233093d962/FLAG49aafc4d8 [2021-04-28 15:43:53,070 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c66de0b8/91780e9bcb4c4daa96e801233093d962 [2021-04-28 15:43:53,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-28 15:43:53,123 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-28 15:43:53,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-28 15:43:53,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-28 15:43:53,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-28 15:43:53,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 03:43:53" (1/1) ... [2021-04-28 15:43:53,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@769ebbb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:43:53, skipping insertion in model container [2021-04-28 15:43:53,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 03:43:53" (1/1) ... [2021-04-28 15:43:53,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-28 15:43:53,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-28 15:43:53,502 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-04-28 15:43:53,738 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-ext/18_read_write_lock.i[31161,31174] [2021-04-28 15:43:53,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 15:43:53,760 INFO L203 MainTranslator]: Completed pre-run [2021-04-28 15:43:53,790 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-04-28 15:43:53,823 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-ext/18_read_write_lock.i[31161,31174] [2021-04-28 15:43:53,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 15:43:53,938 INFO L208 MainTranslator]: Completed translation [2021-04-28 15:43:53,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:43:53 WrapperNode [2021-04-28 15:43:53,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-28 15:43:53,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-28 15:43:53,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-28 15:43:53,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-28 15:43:53,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:43:53" (1/1) ... [2021-04-28 15:43:53,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:43:53" (1/1) ... [2021-04-28 15:43:53,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-28 15:43:53,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-28 15:43:53,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-28 15:43:53,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-28 15:43:54,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:43:53" (1/1) ... [2021-04-28 15:43:54,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:43:53" (1/1) ... [2021-04-28 15:43:54,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:43:53" (1/1) ... [2021-04-28 15:43:54,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:43:53" (1/1) ... [2021-04-28 15:43:54,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:43:53" (1/1) ... [2021-04-28 15:43:54,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:43:53" (1/1) ... [2021-04-28 15:43:54,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:43:53" (1/1) ... [2021-04-28 15:43:54,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-28 15:43:54,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-28 15:43:54,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-28 15:43:54,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-28 15:43:54,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:43:53" (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 [2021-04-28 15:43:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-04-28 15:43:54,141 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-04-28 15:43:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-28 15:43:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-28 15:43:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-28 15:43:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-28 15:43:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-28 15:43:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-28 15:43:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-28 15:43:54,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-28 15:43:54,147 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-28 15:43:54,682 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-28 15:43:54,682 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-04-28 15:43:54,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 03:43:54 BoogieIcfgContainer [2021-04-28 15:43:54,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-28 15:43:54,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-28 15:43:54,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-28 15:43:54,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-28 15:43:54,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 03:43:53" (1/3) ... [2021-04-28 15:43:54,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f631053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 03:43:54, skipping insertion in model container [2021-04-28 15:43:54,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:43:53" (2/3) ... [2021-04-28 15:43:54,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f631053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 03:43:54, skipping insertion in model container [2021-04-28 15:43:54,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 03:43:54" (3/3) ... [2021-04-28 15:43:54,693 INFO L111 eAbstractionObserver]: Analyzing ICFG 18_read_write_lock.i [2021-04-28 15:43:54,701 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-28 15:43:54,706 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-28 15:43:54,707 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-28 15:43:54,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:54,732 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:54,732 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:54,732 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:54,732 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:54,733 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:54,733 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:54,733 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:54,733 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:54,733 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:54,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:54,734 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:54,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:54,748 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:54,749 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:54,749 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:54,752 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:54,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:54,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:54,752 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:54,753 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:54,753 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:43:54,757 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-28 15:43:54,782 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-04-28 15:43:54,809 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-28 15:43:54,809 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-28 15:43:54,810 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-28 15:43:54,810 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-28 15:43:54,810 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-28 15:43:54,810 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-28 15:43:54,810 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-28 15:43:54,810 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-28 15:43:54,824 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 48 transitions, 101 flow [2021-04-28 15:43:54,858 INFO L129 PetriNetUnfolder]: 1/47 cut-off events. [2021-04-28 15:43:54,859 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 15:43:54,862 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 47 events. 1/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2021-04-28 15:43:54,862 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 48 transitions, 101 flow [2021-04-28 15:43:54,867 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 34 transitions, 71 flow [2021-04-28 15:43:54,869 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 15:43:54,885 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 34 transitions, 71 flow [2021-04-28 15:43:54,889 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 34 transitions, 71 flow [2021-04-28 15:43:54,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 34 transitions, 71 flow [2021-04-28 15:43:54,904 INFO L129 PetriNetUnfolder]: 0/34 cut-off events. [2021-04-28 15:43:54,904 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 15:43:54,904 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 34 events. 0/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 11 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-04-28 15:43:54,907 INFO L146 LiptonReduction]: Number of co-enabled transitions 144 [2021-04-28 15:43:59,003 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-28 15:43:59,213 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-28 15:43:59,468 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-04-28 15:43:59,698 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-04-28 15:44:02,538 INFO L158 LiptonReduction]: Checked pairs total: 616 [2021-04-28 15:44:02,538 INFO L160 LiptonReduction]: Total number of compositions: 71 [2021-04-28 15:44:02,541 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7674 [2021-04-28 15:44:02,558 INFO L129 PetriNetUnfolder]: 0/39 cut-off events. [2021-04-28 15:44:02,559 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 15:44:02,559 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 15:44:02,560 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-04-28 15:44:02,560 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 15:44:02,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 15:44:02,566 INFO L82 PathProgramCache]: Analyzing trace with hash 263216401, now seen corresponding path program 1 times [2021-04-28 15:44:02,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 15:44:02,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117929496] [2021-04-28 15:44:02,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 15:44:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 15:44:02,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:44:02,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 15:44:02,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:44:02,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 15:44:02,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 15:44:02,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117929496] [2021-04-28 15:44:02,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 15:44:02,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 15:44:02,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001815364] [2021-04-28 15:44:02,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-28 15:44:02,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 15:44:02,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-28 15:44:02,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-28 15:44:02,816 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 119 [2021-04-28 15:44:02,819 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:44:02,819 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 15:44:02,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 119 [2021-04-28 15:44:02,821 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 15:44:02,911 INFO L129 PetriNetUnfolder]: 24/108 cut-off events. [2021-04-28 15:44:02,911 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 15:44:02,912 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 108 events. 24/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 522 event pairs, 20 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 165. Up to 78 conditions per place. [2021-04-28 15:44:02,913 INFO L132 encePairwiseOnDemand]: 112/119 looper letters, 3 selfloop transitions, 5 changer transitions 38/47 dead transitions. [2021-04-28 15:44:02,914 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 47 transitions, 149 flow [2021-04-28 15:44:02,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-28 15:44:02,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-28 15:44:02,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2021-04-28 15:44:02,930 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6414565826330533 [2021-04-28 15:44:02,931 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2021-04-28 15:44:02,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2021-04-28 15:44:02,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 15:44:02,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2021-04-28 15:44:02,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:44:02,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:44:02,947 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:44:02,949 INFO L185 Difference]: Start difference. First operand has 46 places, 42 transitions, 87 flow. Second operand 3 states and 229 transitions. [2021-04-28 15:44:02,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 47 transitions, 149 flow [2021-04-28 15:44:02,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 47 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-28 15:44:02,956 INFO L241 Difference]: Finished difference. Result has 48 places, 9 transitions, 37 flow [2021-04-28 15:44:02,959 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=48, PETRI_TRANSITIONS=9} [2021-04-28 15:44:02,960 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2021-04-28 15:44:02,960 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 15:44:02,960 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 9 transitions, 37 flow [2021-04-28 15:44:02,961 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 9 transitions, 37 flow [2021-04-28 15:44:02,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 15 places, 9 transitions, 37 flow [2021-04-28 15:44:02,964 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-04-28 15:44:02,965 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-04-28 15:44:02,965 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 12 events. 0/12 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 18 event pairs, 0 based on Foata normal form. 0/9 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-04-28 15:44:02,965 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-28 15:44:03,054 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-28 15:44:03,054 INFO L160 LiptonReduction]: Total number of compositions: 1 [2021-04-28 15:44:03,054 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 94 [2021-04-28 15:44:03,056 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 9 transitions, 37 flow [2021-04-28 15:44:03,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:44:03,057 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 15:44:03,057 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-04-28 15:44:03,057 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-28 15:44:03,057 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 15:44:03,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 15:44:03,058 INFO L82 PathProgramCache]: Analyzing trace with hash -430226141, now seen corresponding path program 1 times [2021-04-28 15:44:03,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 15:44:03,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986274826] [2021-04-28 15:44:03,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 15:44:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 15:44:03,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:44:03,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 15:44:03,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:44:03,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 15:44:03,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:44:03,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 15:44:03,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 15:44:03,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986274826] [2021-04-28 15:44:03,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 15:44:03,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 15:44:03,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904829716] [2021-04-28 15:44:03,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 15:44:03,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 15:44:03,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 15:44:03,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-28 15:44:03,176 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 120 [2021-04-28 15:44:03,177 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 9 transitions, 37 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:44:03,177 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 15:44:03,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 120 [2021-04-28 15:44:03,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 15:44:03,195 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2021-04-28 15:44:03,195 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-04-28 15:44:03,196 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14 conditions, 4 events. 0/4 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 1/5 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-28 15:44:03,196 INFO L132 encePairwiseOnDemand]: 113/120 looper letters, 0 selfloop transitions, 0 changer transitions 4/4 dead transitions. [2021-04-28 15:44:03,196 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 4 transitions, 19 flow [2021-04-28 15:44:03,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 15:44:03,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 15:44:03,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 327 transitions. [2021-04-28 15:44:03,205 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.68125 [2021-04-28 15:44:03,205 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 327 transitions. [2021-04-28 15:44:03,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 327 transitions. [2021-04-28 15:44:03,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 15:44:03,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 327 transitions. [2021-04-28 15:44:03,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:44:03,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:44:03,215 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:44:03,215 INFO L185 Difference]: Start difference. First operand has 15 places, 9 transitions, 37 flow. Second operand 4 states and 327 transitions. [2021-04-28 15:44:03,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 4 transitions, 19 flow [2021-04-28 15:44:03,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 4 transitions, 17 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-28 15:44:03,215 INFO L241 Difference]: Finished difference. Result has 11 places, 0 transitions, 0 flow [2021-04-28 15:44:03,216 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=11, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=11, PETRI_TRANSITIONS=0} [2021-04-28 15:44:03,216 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, -35 predicate places. [2021-04-28 15:44:03,217 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 15:44:03,217 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 11 places, 0 transitions, 0 flow [2021-04-28 15:44:03,219 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 11 places, 0 transitions, 0 flow [2021-04-28 15:44:03,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-28 15:44:03,219 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-28 15:44:03,219 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 15:44:03,219 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. [2021-04-28 15:44:03,220 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-28 15:44:03,220 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-28 15:44:03,220 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 15:44:03,220 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3 [2021-04-28 15:44:03,222 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-28 15:44:03,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 15:44:03,223 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-28 15:44:03,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 03:44:03 BasicIcfg [2021-04-28 15:44:03,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-28 15:44:03,231 INFO L168 Benchmark]: Toolchain (without parser) took 10151.12 ms. Allocated memory was 302.0 MB in the beginning and 450.9 MB in the end (delta: 148.9 MB). Free memory was 275.3 MB in the beginning and 238.4 MB in the end (delta: 36.9 MB). Peak memory consumption was 188.9 MB. Max. memory is 16.0 GB. [2021-04-28 15:44:03,237 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 302.0 MB. Free memory was 271.9 MB in the beginning and 271.8 MB in the end (delta: 153.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-28 15:44:03,238 INFO L168 Benchmark]: CACSL2BoogieTranslator took 812.52 ms. Allocated memory is still 302.0 MB. Free memory was 272.2 MB in the beginning and 270.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.0 GB. [2021-04-28 15:44:03,239 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.98 ms. Allocated memory is still 302.0 MB. Free memory was 270.9 MB in the beginning and 269.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-28 15:44:03,239 INFO L168 Benchmark]: Boogie Preprocessor took 27.98 ms. Allocated memory is still 302.0 MB. Free memory was 268.8 MB in the beginning and 267.9 MB in the end (delta: 920.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-28 15:44:03,240 INFO L168 Benchmark]: RCFGBuilder took 665.39 ms. Allocated memory is still 302.0 MB. Free memory was 267.9 MB in the beginning and 239.0 MB in the end (delta: 28.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2021-04-28 15:44:03,244 INFO L168 Benchmark]: TraceAbstraction took 8541.51 ms. Allocated memory was 302.0 MB in the beginning and 450.9 MB in the end (delta: 148.9 MB). Free memory was 238.5 MB in the beginning and 238.4 MB in the end (delta: 125.4 kB). Peak memory consumption was 149.4 MB. Max. memory is 16.0 GB. [2021-04-28 15:44:03,254 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 302.0 MB. Free memory was 271.9 MB in the beginning and 271.8 MB in the end (delta: 153.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 812.52 ms. Allocated memory is still 302.0 MB. Free memory was 272.2 MB in the beginning and 270.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 49.98 ms. Allocated memory is still 302.0 MB. Free memory was 270.9 MB in the beginning and 269.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 27.98 ms. Allocated memory is still 302.0 MB. Free memory was 268.8 MB in the beginning and 267.9 MB in the end (delta: 920.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 665.39 ms. Allocated memory is still 302.0 MB. Free memory was 267.9 MB in the beginning and 239.0 MB in the end (delta: 28.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 8541.51 ms. Allocated memory was 302.0 MB in the beginning and 450.9 MB in the end (delta: 148.9 MB). Free memory was 238.5 MB in the beginning and 238.4 MB in the end (delta: 125.4 kB). Peak memory consumption was 149.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7648.7ms, 38 PlacesBefore, 46 PlacesAfterwards, 34 TransitionsBefore, 42 TransitionsAfterwards, 144 CoEnabledTransitionPairs, 7 FixpointIterations, 48 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 71 TotalNumberOfCompositions, 616 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 316, positive: 247, positive conditional: 247, positive unconditional: 0, negative: 69, negative conditional: 69, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 155, positive: 140, positive conditional: 0, positive unconditional: 140, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 155, positive: 140, positive conditional: 0, positive unconditional: 140, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 155, positive: 138, positive conditional: 0, positive unconditional: 138, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 17, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 93, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 81, negative conditional: 0, negative unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 316, positive: 107, positive conditional: 107, positive unconditional: 0, negative: 54, negative conditional: 54, negative unconditional: 0, unknown: 155, unknown conditional: 155, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 155, Positive cache size: 140, Positive conditional cache size: 140, Positive unconditional cache size: 0, Negative cache size: 15, Negative conditional cache size: 15, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 93.2ms, 48 PlacesBefore, 15 PlacesAfterwards, 9 TransitionsBefore, 9 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 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): 155, Positive cache size: 140, Positive conditional cache size: 140, Positive unconditional cache size: 0, Negative cache size: 15, Negative conditional cache size: 15, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4ms, 11 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): 155, Positive cache size: 140, Positive conditional cache size: 140, Positive unconditional cache size: 0, Negative cache size: 15, Negative conditional cache size: 15, Negative unconditional cache size: 0 - PositiveResult [Line: 738]: 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 2 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 8.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 8419.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 195.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7739.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 25 SDtfs, 1 SDslu, 0 SDs, 0 SdLazy, 30 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 57.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=0, InterpolantAutomatonStates: 7, 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: 7.8ms SsaConstructionTime, 58.2ms SatisfiabilityAnalysisTime, 150.6ms InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...