/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 01:39:25,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 01:39:25,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 01:39:25,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 01:39:25,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 01:39:25,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 01:39:25,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 01:39:25,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 01:39:25,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 01:39:25,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 01:39:25,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 01:39:25,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 01:39:25,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 01:39:25,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 01:39:25,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 01:39:25,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 01:39:25,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 01:39:25,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 01:39:25,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 01:39:25,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 01:39:25,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 01:39:25,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 01:39:25,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 01:39:25,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 01:39:25,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 01:39:25,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 01:39:25,199 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 01:39:25,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 01:39:25,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 01:39:25,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 01:39:25,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 01:39:25,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 01:39:25,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 01:39:25,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 01:39:25,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 01:39:25,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 01:39:25,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 01:39:25,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 01:39:25,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 01:39:25,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 01:39:25,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 01:39:25,208 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-03-11 01:39:25,236 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 01:39:25,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 01:39:25,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 01:39:25,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 01:39:25,239 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 01:39:25,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 01:39:25,240 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 01:39:25,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 01:39:25,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 01:39:25,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 01:39:25,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 01:39:25,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 01:39:25,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 01:39:25,241 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 01:39:25,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 01:39:25,241 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 01:39:25,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 01:39:25,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 01:39:25,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 01:39:25,241 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 01:39:25,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 01:39:25,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 01:39:25,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 01:39:25,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 01:39:25,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 01:39:25,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 01:39:25,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 01:39:25,242 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 01:39:25,242 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 01:39:25,242 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 01:39:25,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 01:39:25,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 01:39:25,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 01:39:25,455 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 01:39:25,456 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 01:39:25,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2021-03-11 01:39:25,498 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b151003dc/c48facaad96e498697330fe21f5d04f9/FLAG1b9e15cc2 [2021-03-11 01:39:25,925 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 01:39:25,926 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2021-03-11 01:39:25,944 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b151003dc/c48facaad96e498697330fe21f5d04f9/FLAG1b9e15cc2 [2021-03-11 01:39:26,275 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b151003dc/c48facaad96e498697330fe21f5d04f9 [2021-03-11 01:39:26,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 01:39:26,280 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 01:39:26,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 01:39:26,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 01:39:26,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 01:39:26,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 01:39:26" (1/1) ... [2021-03-11 01:39:26,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e6a2496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:39:26, skipping insertion in model container [2021-03-11 01:39:26,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 01:39:26" (1/1) ... [2021-03-11 01:39:26,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 01:39:26,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 01:39:26,392 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-11 01:39:26,498 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] [2021-03-11 01:39:26,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 01:39:26,506 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 01:39:26,531 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-11 01:39:26,542 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] [2021-03-11 01:39:26,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 01:39:26,604 INFO L208 MainTranslator]: Completed translation [2021-03-11 01:39:26,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:39:26 WrapperNode [2021-03-11 01:39:26,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 01:39:26,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 01:39:26,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 01:39:26,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 01:39:26,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:39:26" (1/1) ... [2021-03-11 01:39:26,635 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:39:26" (1/1) ... [2021-03-11 01:39:26,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 01:39:26,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 01:39:26,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 01:39:26,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 01:39:26,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:39:26" (1/1) ... [2021-03-11 01:39:26,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:39:26" (1/1) ... [2021-03-11 01:39:26,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:39:26" (1/1) ... [2021-03-11 01:39:26,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:39:26" (1/1) ... [2021-03-11 01:39:26,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:39:26" (1/1) ... [2021-03-11 01:39:26,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:39:26" (1/1) ... [2021-03-11 01:39:26,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:39:26" (1/1) ... [2021-03-11 01:39:26,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 01:39:26,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 01:39:26,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 01:39:26,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 01:39:26,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:39:26" (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 [2021-03-11 01:39:26,733 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-03-11 01:39:26,734 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-03-11 01:39:26,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 01:39:26,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 01:39:26,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 01:39:26,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 01:39:26,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 01:39:26,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 01:39:26,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 01:39:26,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 01:39:26,737 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 01:39:27,055 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 01:39:27,055 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-03-11 01:39:27,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 01:39:27 BoogieIcfgContainer [2021-03-11 01:39:27,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 01:39:27,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 01:39:27,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 01:39:27,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 01:39:27,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 01:39:26" (1/3) ... [2021-03-11 01:39:27,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e39224a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 01:39:27, skipping insertion in model container [2021-03-11 01:39:27,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:39:26" (2/3) ... [2021-03-11 01:39:27,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e39224a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 01:39:27, skipping insertion in model container [2021-03-11 01:39:27,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 01:39:27" (3/3) ... [2021-03-11 01:39:27,061 INFO L111 eAbstractionObserver]: Analyzing ICFG 18_read_write_lock.i [2021-03-11 01:39:27,064 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 01:39:27,067 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 01:39:27,067 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 01:39:27,080 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:27,081 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:27,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:27,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:27,081 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:27,081 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:27,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:27,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:27,081 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:27,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:27,082 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:27,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:27,082 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:27,082 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:27,082 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:27,082 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:27,083 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:27,084 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:27,084 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:27,084 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:27,084 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:27,084 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:27,086 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 01:39:27,098 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-11 01:39:27,110 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 01:39:27,110 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 01:39:27,111 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 01:39:27,111 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 01:39:27,111 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 01:39:27,111 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 01:39:27,111 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 01:39:27,111 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 01:39:27,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 48 transitions, 101 flow [2021-03-11 01:39:27,148 INFO L129 PetriNetUnfolder]: 1/47 cut-off events. [2021-03-11 01:39:27,148 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 01:39:27,154 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. [2021-03-11 01:39:27,154 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 48 transitions, 101 flow [2021-03-11 01:39:27,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 34 transitions, 71 flow [2021-03-11 01:39:27,162 INFO L129 PetriNetUnfolder]: 0/33 cut-off events. [2021-03-11 01:39:27,162 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 01:39:27,162 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 01:39:27,168 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 01:39:27,169 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 01:39:27,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 01:39:27,174 INFO L82 PathProgramCache]: Analyzing trace with hash 700530988, now seen corresponding path program 1 times [2021-03-11 01:39:27,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 01:39:27,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804453404] [2021-03-11 01:39:27,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 01:39:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 01:39:27,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:39:27,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 01:39:27,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:39:27,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 01:39:27,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:39:27,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 01:39:27,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:39:27,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 01:39:27,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:39:27,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 01:39:27,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:39:27,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 01:39:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 01:39:27,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804453404] [2021-03-11 01:39:27,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 01:39:27,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 01:39:27,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937840856] [2021-03-11 01:39:27,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 01:39:27,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 01:39:27,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 01:39:27,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 01:39:27,372 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 48 [2021-03-11 01:39:27,374 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 71 flow. Second operand has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 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) [2021-03-11 01:39:27,375 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 01:39:27,375 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 48 [2021-03-11 01:39:27,375 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 01:39:27,450 INFO L129 PetriNetUnfolder]: 3/56 cut-off events. [2021-03-11 01:39:27,450 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 01:39:27,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 56 events. 3/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 95 event pairs, 1 based on Foata normal form. 3/59 useless extension candidates. Maximal degree in co-relation 60. Up to 14 conditions per place. [2021-03-11 01:39:27,451 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 7 selfloop transitions, 6 changer transitions 3/41 dead transitions. [2021-03-11 01:39:27,452 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 117 flow [2021-03-11 01:39:27,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 01:39:27,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 01:39:27,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 270 transitions. [2021-03-11 01:39:27,459 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8035714285714286 [2021-03-11 01:39:27,460 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 270 transitions. [2021-03-11 01:39:27,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 270 transitions. [2021-03-11 01:39:27,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 01:39:27,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 270 transitions. [2021-03-11 01:39:27,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 38.57142857142857) internal successors, (270), 7 states have internal predecessors, (270), 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) [2021-03-11 01:39:27,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 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) [2021-03-11 01:39:27,467 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 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) [2021-03-11 01:39:27,468 INFO L185 Difference]: Start difference. First operand has 38 places, 34 transitions, 71 flow. Second operand 7 states and 270 transitions. [2021-03-11 01:39:27,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 117 flow [2021-03-11 01:39:27,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 116 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 01:39:27,472 INFO L241 Difference]: Finished difference. Result has 48 places, 38 transitions, 108 flow [2021-03-11 01:39:27,473 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=108, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2021-03-11 01:39:27,473 INFO L335 CegarLoopForPetriNet]: 38 programPoint places, 10 predicate places. [2021-03-11 01:39:27,473 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 108 flow [2021-03-11 01:39:27,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 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) [2021-03-11 01:39:27,474 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 01:39:27,474 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 01:39:27,474 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 01:39:27,474 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 01:39:27,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 01:39:27,474 INFO L82 PathProgramCache]: Analyzing trace with hash 910679431, now seen corresponding path program 1 times [2021-03-11 01:39:27,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 01:39:27,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334892925] [2021-03-11 01:39:27,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 01:39:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 01:39:27,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:39:27,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 01:39:27,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:39:27,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 01:39:27,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:39:27,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 01:39:27,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:39:27,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 01:39:27,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 01:39:27,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334892925] [2021-03-11 01:39:27,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 01:39:27,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 01:39:27,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585181577] [2021-03-11 01:39:27,520 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 01:39:27,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 01:39:27,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 01:39:27,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 01:39:27,521 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-03-11 01:39:27,521 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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) [2021-03-11 01:39:27,521 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 01:39:27,521 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-03-11 01:39:27,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 01:39:27,533 INFO L129 PetriNetUnfolder]: 2/48 cut-off events. [2021-03-11 01:39:27,533 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-11 01:39:27,533 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 48 events. 2/48 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 1/48 useless extension candidates. Maximal degree in co-relation 71. Up to 5 conditions per place. [2021-03-11 01:39:27,533 INFO L132 encePairwiseOnDemand]: 45/48 looper letters, 1 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2021-03-11 01:39:27,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 38 transitions, 114 flow [2021-03-11 01:39:27,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 01:39:27,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 01:39:27,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2021-03-11 01:39:27,535 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.875 [2021-03-11 01:39:27,535 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 168 transitions. [2021-03-11 01:39:27,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 168 transitions. [2021-03-11 01:39:27,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 01:39:27,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 168 transitions. [2021-03-11 01:39:27,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2021-03-11 01:39:27,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 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) [2021-03-11 01:39:27,536 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 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) [2021-03-11 01:39:27,536 INFO L185 Difference]: Start difference. First operand has 48 places, 38 transitions, 108 flow. Second operand 4 states and 168 transitions. [2021-03-11 01:39:27,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 38 transitions, 114 flow [2021-03-11 01:39:27,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 38 transitions, 106 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-03-11 01:39:27,538 INFO L241 Difference]: Finished difference. Result has 47 places, 38 transitions, 107 flow [2021-03-11 01:39:27,538 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2021-03-11 01:39:27,539 INFO L335 CegarLoopForPetriNet]: 38 programPoint places, 9 predicate places. [2021-03-11 01:39:27,539 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 107 flow [2021-03-11 01:39:27,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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) [2021-03-11 01:39:27,539 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 01:39:27,539 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 01:39:27,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 01:39:27,539 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 01:39:27,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 01:39:27,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1568104315, now seen corresponding path program 2 times [2021-03-11 01:39:27,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 01:39:27,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362568086] [2021-03-11 01:39:27,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 01:39:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 01:39:27,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:39:27,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 01:39:27,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:39:27,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 01:39:27,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:39:27,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 01:39:27,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 01:39:27,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362568086] [2021-03-11 01:39:27,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 01:39:27,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 01:39:27,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438570614] [2021-03-11 01:39:27,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 01:39:27,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 01:39:27,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 01:39:27,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 01:39:27,568 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 48 [2021-03-11 01:39:27,569 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2021-03-11 01:39:27,569 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 01:39:27,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 48 [2021-03-11 01:39:27,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 01:39:27,574 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2021-03-11 01:39:27,574 INFO L130 PetriNetUnfolder]: For 7/9 co-relation queries the response was YES. [2021-03-11 01:39:27,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 27 events. 0/27 cut-off events. For 7/9 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 1/28 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-11 01:39:27,574 INFO L132 encePairwiseOnDemand]: 46/48 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2021-03-11 01:39:27,574 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 27 transitions, 79 flow [2021-03-11 01:39:27,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 01:39:27,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 01:39:27,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2021-03-11 01:39:27,575 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9027777777777778 [2021-03-11 01:39:27,575 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 130 transitions. [2021-03-11 01:39:27,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 130 transitions. [2021-03-11 01:39:27,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 01:39:27,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 130 transitions. [2021-03-11 01:39:27,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2021-03-11 01:39:27,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2021-03-11 01:39:27,577 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2021-03-11 01:39:27,577 INFO L185 Difference]: Start difference. First operand has 47 places, 38 transitions, 107 flow. Second operand 3 states and 130 transitions. [2021-03-11 01:39:27,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 27 transitions, 79 flow [2021-03-11 01:39:27,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 27 transitions, 67 flow, removed 0 selfloop flow, removed 7 redundant places. [2021-03-11 01:39:27,577 INFO L241 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2021-03-11 01:39:27,578 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2021-03-11 01:39:27,578 INFO L335 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2021-03-11 01:39:27,578 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2021-03-11 01:39:27,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2021-03-11 01:39:27,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 01:39:27,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 01:39:27 BasicIcfg [2021-03-11 01:39:27,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 01:39:27,582 INFO L168 Benchmark]: Toolchain (without parser) took 1303.99 ms. Allocated memory was 255.9 MB in the beginning and 341.8 MB in the end (delta: 86.0 MB). Free memory was 234.6 MB in the beginning and 271.1 MB in the end (delta: -36.5 MB). Peak memory consumption was 49.1 MB. Max. memory is 16.0 GB. [2021-03-11 01:39:27,582 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 01:39:27,583 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.06 ms. Allocated memory was 255.9 MB in the beginning and 341.8 MB in the end (delta: 86.0 MB). Free memory was 234.0 MB in the beginning and 305.3 MB in the end (delta: -71.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-11 01:39:27,583 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.75 ms. Allocated memory is still 341.8 MB. Free memory was 305.3 MB in the beginning and 303.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 01:39:27,583 INFO L168 Benchmark]: Boogie Preprocessor took 29.76 ms. Allocated memory is still 341.8 MB. Free memory was 303.2 MB in the beginning and 301.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 01:39:27,584 INFO L168 Benchmark]: RCFGBuilder took 372.17 ms. Allocated memory is still 341.8 MB. Free memory was 301.8 MB in the beginning and 272.5 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2021-03-11 01:39:27,584 INFO L168 Benchmark]: TraceAbstraction took 524.09 ms. Allocated memory is still 341.8 MB. Free memory was 272.5 MB in the beginning and 271.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.0 GB. [2021-03-11 01:39:27,586 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 325.06 ms. Allocated memory was 255.9 MB in the beginning and 341.8 MB in the end (delta: 86.0 MB). Free memory was 234.0 MB in the beginning and 305.3 MB in the end (delta: -71.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 46.75 ms. Allocated memory is still 341.8 MB. Free memory was 305.3 MB in the beginning and 303.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.76 ms. Allocated memory is still 341.8 MB. Free memory was 303.2 MB in the beginning and 301.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 372.17 ms. Allocated memory is still 341.8 MB. Free memory was 301.8 MB in the beginning and 272.5 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 524.09 ms. Allocated memory is still 341.8 MB. Free memory was 272.5 MB in the beginning and 271.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 738]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 470.7ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 132.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 45.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14 SDtfs, 8 SDslu, 13 SDs, 0 SdLazy, 47 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 29.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=1, InterpolantAutomatonStates: 14, 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: 8.9ms SsaConstructionTime, 52.5ms SatisfiabilityAnalysisTime, 123.5ms InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 129 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...