/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/lazy01.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 18:05:45,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 18:05:45,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 18:05:45,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 18:05:45,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 18:05:45,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 18:05:45,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 18:05:45,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 18:05:45,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 18:05:45,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 18:05:45,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 18:05:45,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 18:05:45,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 18:05:45,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 18:05:45,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 18:05:45,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 18:05:45,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 18:05:45,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 18:05:45,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 18:05:45,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 18:05:45,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 18:05:45,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 18:05:45,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 18:05:45,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 18:05:45,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 18:05:45,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 18:05:45,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 18:05:45,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 18:05:45,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 18:05:45,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 18:05:45,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 18:05:45,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 18:05:45,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 18:05:45,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 18:05:45,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 18:05:45,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 18:05:45,318 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-SemanticLbe.epf [2021-03-24 18:05:45,332 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 18:05:45,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 18:05:45,333 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 18:05:45,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 18:05:45,333 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 18:05:45,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 18:05:45,334 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 18:05:45,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 18:05:45,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 18:05:45,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 18:05:45,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 18:05:45,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 18:05:45,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 18:05:45,334 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 18:05:45,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 18:05:45,335 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 18:05:45,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 18:05:45,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 18:05:45,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 18:05:45,335 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 18:05:45,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 18:05:45,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 18:05:45,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 18:05:45,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 18:05:45,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 18:05:45,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 18:05:45,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 18:05:45,336 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 18:05:45,336 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 18:05:45,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 18:05:45,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 18:05:45,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 18:05:45,697 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 18:05:45,698 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 18:05:45,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.i [2021-03-24 18:05:45,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ff8ad890/6946decc6ce6448486c2cb7768691394/FLAG8f6c406e1 [2021-03-24 18:05:46,161 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 18:05:46,161 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i [2021-03-24 18:05:46,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ff8ad890/6946decc6ce6448486c2cb7768691394/FLAG8f6c406e1 [2021-03-24 18:05:46,180 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ff8ad890/6946decc6ce6448486c2cb7768691394 [2021-03-24 18:05:46,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 18:05:46,186 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 18:05:46,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 18:05:46,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 18:05:46,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 18:05:46,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 06:05:46" (1/1) ... [2021-03-24 18:05:46,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aee53e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:05:46, skipping insertion in model container [2021-03-24 18:05:46,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 06:05:46" (1/1) ... [2021-03-24 18:05:46,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 18:05:46,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 18:05:46,418 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/lazy01.i[31042,31055] [2021-03-24 18:05:46,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 18:05:46,433 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 18:05:46,470 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/lazy01.i[31042,31055] [2021-03-24 18:05:46,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 18:05:46,523 INFO L208 MainTranslator]: Completed translation [2021-03-24 18:05:46,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:05:46 WrapperNode [2021-03-24 18:05:46,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 18:05:46,528 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 18:05:46,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 18:05:46,529 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 18:05:46,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:05:46" (1/1) ... [2021-03-24 18:05:46,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:05:46" (1/1) ... [2021-03-24 18:05:46,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 18:05:46,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 18:05:46,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 18:05:46,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 18:05:46,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:05:46" (1/1) ... [2021-03-24 18:05:46,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:05:46" (1/1) ... [2021-03-24 18:05:46,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:05:46" (1/1) ... [2021-03-24 18:05:46,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:05:46" (1/1) ... [2021-03-24 18:05:46,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:05:46" (1/1) ... [2021-03-24 18:05:46,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:05:46" (1/1) ... [2021-03-24 18:05:46,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:05:46" (1/1) ... [2021-03-24 18:05:46,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 18:05:46,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 18:05:46,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 18:05:46,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 18:05:46,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:05:46" (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 [2021-03-24 18:05:46,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-24 18:05:46,676 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-24 18:05:46,676 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-24 18:05:46,677 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-24 18:05:46,677 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-24 18:05:46,677 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-24 18:05:46,677 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-24 18:05:46,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 18:05:46,678 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-03-24 18:05:46,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 18:05:46,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 18:05:46,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 18:05:46,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 18:05:46,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 18:05:46,680 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 18:05:46,914 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 18:05:46,914 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-24 18:05:46,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 06:05:46 BoogieIcfgContainer [2021-03-24 18:05:46,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 18:05:46,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 18:05:46,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 18:05:46,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 18:05:46,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 06:05:46" (1/3) ... [2021-03-24 18:05:46,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@438c04e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 06:05:46, skipping insertion in model container [2021-03-24 18:05:46,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:05:46" (2/3) ... [2021-03-24 18:05:46,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@438c04e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 06:05:46, skipping insertion in model container [2021-03-24 18:05:46,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 06:05:46" (3/3) ... [2021-03-24 18:05:46,920 INFO L111 eAbstractionObserver]: Analyzing ICFG lazy01.i [2021-03-24 18:05:46,924 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 18:05:46,926 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 18:05:46,927 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 18:05:46,950 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,951 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,951 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,951 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,951 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,951 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,951 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,952 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,952 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,952 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,952 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,952 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,952 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,953 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,953 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,953 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,953 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,954 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,954 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,954 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,954 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,954 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,955 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,955 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,955 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,955 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,955 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,955 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,955 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,955 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,955 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,956 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,956 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,956 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,956 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,956 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,957 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,957 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,957 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,957 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,957 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,957 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,958 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,958 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,958 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,958 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,971 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,972 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,972 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,972 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,973 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,973 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,973 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,973 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,975 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,975 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,975 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,975 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,975 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,975 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,979 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,979 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,979 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,979 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,979 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,981 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,981 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,981 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,981 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,981 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:05:46,989 INFO L149 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2021-03-24 18:05:47,003 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-24 18:05:47,017 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 18:05:47,017 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 18:05:47,017 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 18:05:47,017 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 18:05:47,017 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 18:05:47,017 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 18:05:47,017 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 18:05:47,018 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 18:05:47,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 83 transitions, 208 flow [2021-03-24 18:05:47,060 INFO L129 PetriNetUnfolder]: 6/91 cut-off events. [2021-03-24 18:05:47,061 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-03-24 18:05:47,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 91 events. 6/91 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 133 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 53. Up to 6 conditions per place. [2021-03-24 18:05:47,064 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 83 transitions, 208 flow [2021-03-24 18:05:47,067 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 65 transitions, 151 flow [2021-03-24 18:05:47,068 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 18:05:47,076 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 65 transitions, 151 flow [2021-03-24 18:05:47,079 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 65 transitions, 151 flow [2021-03-24 18:05:47,080 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 65 transitions, 151 flow [2021-03-24 18:05:47,092 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2021-03-24 18:05:47,092 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-24 18:05:47,093 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 67 events. 2/67 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 88 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 43. Up to 3 conditions per place. [2021-03-24 18:05:47,094 INFO L142 LiptonReduction]: Number of co-enabled transitions 1008 [2021-03-24 18:05:48,206 INFO L154 LiptonReduction]: Checked pairs total: 1277 [2021-03-24 18:05:48,207 INFO L156 LiptonReduction]: Total number of compositions: 40 [2021-03-24 18:05:48,208 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1141 [2021-03-24 18:05:48,215 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-24 18:05:48,215 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-24 18:05:48,215 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 18:05:48,216 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 18:05:48,216 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 18:05:48,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 18:05:48,220 INFO L82 PathProgramCache]: Analyzing trace with hash -240498527, now seen corresponding path program 1 times [2021-03-24 18:05:48,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 18:05:48,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305692047] [2021-03-24 18:05:48,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 18:05:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 18:05:48,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:05:48,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 18:05:48,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:05:48,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 18:05:48,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 18:05:48,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305692047] [2021-03-24 18:05:48,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 18:05:48,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 18:05:48,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074744502] [2021-03-24 18:05:48,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 18:05:48,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 18:05:48,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 18:05:48,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 18:05:48,397 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 123 [2021-03-24 18:05:48,399 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2021-03-24 18:05:48,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 18:05:48,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 123 [2021-03-24 18:05:48,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 18:05:48,426 INFO L129 PetriNetUnfolder]: 15/72 cut-off events. [2021-03-24 18:05:48,426 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-03-24 18:05:48,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 72 events. 15/72 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 248 event pairs, 3 based on Foata normal form. 4/69 useless extension candidates. Maximal degree in co-relation 101. Up to 24 conditions per place. [2021-03-24 18:05:48,428 INFO L132 encePairwiseOnDemand]: 118/123 looper letters, 6 selfloop transitions, 3 changer transitions 2/32 dead transitions. [2021-03-24 18:05:48,428 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 105 flow [2021-03-24 18:05:48,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 18:05:48,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 18:05:48,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2021-03-24 18:05:48,439 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8726287262872628 [2021-03-24 18:05:48,439 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2021-03-24 18:05:48,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2021-03-24 18:05:48,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 18:05:48,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2021-03-24 18:05:48,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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) [2021-03-24 18:05:48,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 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) [2021-03-24 18:05:48,450 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 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) [2021-03-24 18:05:48,452 INFO L185 Difference]: Start difference. First operand has 37 places, 30 transitions, 81 flow. Second operand 3 states and 322 transitions. [2021-03-24 18:05:48,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 105 flow [2021-03-24 18:05:48,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 92 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-24 18:05:48,456 INFO L241 Difference]: Finished difference. Result has 34 places, 29 transitions, 81 flow [2021-03-24 18:05:48,457 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2021-03-24 18:05:48,458 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2021-03-24 18:05:48,458 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 81 flow [2021-03-24 18:05:48,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2021-03-24 18:05:48,459 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 18:05:48,459 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 18:05:48,459 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 18:05:48,459 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 18:05:48,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 18:05:48,460 INFO L82 PathProgramCache]: Analyzing trace with hash 809142188, now seen corresponding path program 1 times [2021-03-24 18:05:48,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 18:05:48,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961603199] [2021-03-24 18:05:48,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 18:05:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 18:05:48,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:05:48,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 18:05:48,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:05:48,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 18:05:48,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:05:48,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 18:05:48,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 18:05:48,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961603199] [2021-03-24 18:05:48,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 18:05:48,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 18:05:48,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853691967] [2021-03-24 18:05:48,506 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 18:05:48,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 18:05:48,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 18:05:48,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 18:05:48,508 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 123 [2021-03-24 18:05:48,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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) [2021-03-24 18:05:48,509 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 18:05:48,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 123 [2021-03-24 18:05:48,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 18:05:48,527 INFO L129 PetriNetUnfolder]: 2/45 cut-off events. [2021-03-24 18:05:48,527 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-24 18:05:48,528 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 45 events. 2/45 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 116 event pairs, 0 based on Foata normal form. 9/53 useless extension candidates. Maximal degree in co-relation 56. Up to 8 conditions per place. [2021-03-24 18:05:48,528 INFO L132 encePairwiseOnDemand]: 118/123 looper letters, 2 selfloop transitions, 5 changer transitions 0/29 dead transitions. [2021-03-24 18:05:48,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 95 flow [2021-03-24 18:05:48,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 18:05:48,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 18:05:48,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2021-03-24 18:05:48,530 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7344173441734417 [2021-03-24 18:05:48,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2021-03-24 18:05:48,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2021-03-24 18:05:48,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 18:05:48,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2021-03-24 18:05:48,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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) [2021-03-24 18:05:48,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 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) [2021-03-24 18:05:48,533 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 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) [2021-03-24 18:05:48,533 INFO L185 Difference]: Start difference. First operand has 34 places, 29 transitions, 81 flow. Second operand 3 states and 271 transitions. [2021-03-24 18:05:48,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 95 flow [2021-03-24 18:05:48,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 29 transitions, 92 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 18:05:48,535 INFO L241 Difference]: Finished difference. Result has 34 places, 29 transitions, 88 flow [2021-03-24 18:05:48,535 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2021-03-24 18:05:48,535 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2021-03-24 18:05:48,535 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 88 flow [2021-03-24 18:05:48,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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) [2021-03-24 18:05:48,536 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 18:05:48,536 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 18:05:48,536 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 18:05:48,536 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 18:05:48,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 18:05:48,537 INFO L82 PathProgramCache]: Analyzing trace with hash -2064057665, now seen corresponding path program 1 times [2021-03-24 18:05:48,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 18:05:48,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997574715] [2021-03-24 18:05:48,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 18:05:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 18:05:48,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:05:48,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 18:05:48,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:05:48,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 18:05:48,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:05:48,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 18:05:48,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 18:05:48,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997574715] [2021-03-24 18:05:48,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 18:05:48,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 18:05:48,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193169154] [2021-03-24 18:05:48,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 18:05:48,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 18:05:48,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 18:05:48,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 18:05:48,579 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 123 [2021-03-24 18:05:48,580 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 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) [2021-03-24 18:05:48,580 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 18:05:48,580 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 123 [2021-03-24 18:05:48,580 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 18:05:48,601 INFO L129 PetriNetUnfolder]: 2/44 cut-off events. [2021-03-24 18:05:48,601 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-24 18:05:48,602 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 44 events. 2/44 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 103 event pairs, 0 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 64. Up to 8 conditions per place. [2021-03-24 18:05:48,602 INFO L132 encePairwiseOnDemand]: 118/123 looper letters, 4 selfloop transitions, 5 changer transitions 2/32 dead transitions. [2021-03-24 18:05:48,602 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 32 transitions, 116 flow [2021-03-24 18:05:48,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 18:05:48,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 18:05:48,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 424 transitions. [2021-03-24 18:05:48,605 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8617886178861789 [2021-03-24 18:05:48,605 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 424 transitions. [2021-03-24 18:05:48,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 424 transitions. [2021-03-24 18:05:48,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 18:05:48,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 424 transitions. [2021-03-24 18:05:48,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2021-03-24 18:05:48,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 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) [2021-03-24 18:05:48,609 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 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) [2021-03-24 18:05:48,609 INFO L185 Difference]: Start difference. First operand has 34 places, 29 transitions, 88 flow. Second operand 4 states and 424 transitions. [2021-03-24 18:05:48,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 32 transitions, 116 flow [2021-03-24 18:05:48,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 111 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 18:05:48,610 INFO L241 Difference]: Finished difference. Result has 37 places, 29 transitions, 98 flow [2021-03-24 18:05:48,610 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2021-03-24 18:05:48,610 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2021-03-24 18:05:48,611 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 98 flow [2021-03-24 18:05:48,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 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) [2021-03-24 18:05:48,611 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 18:05:48,611 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 18:05:48,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 18:05:48,611 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 18:05:48,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 18:05:48,612 INFO L82 PathProgramCache]: Analyzing trace with hash 756270741, now seen corresponding path program 1 times [2021-03-24 18:05:48,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 18:05:48,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707025119] [2021-03-24 18:05:48,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 18:05:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 18:05:48,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:05:48,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 18:05:48,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:05:48,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 18:05:48,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:05:48,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 18:05:48,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:05:48,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 18:05:48,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 18:05:48,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707025119] [2021-03-24 18:05:48,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 18:05:48,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 18:05:48,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094609728] [2021-03-24 18:05:48,646 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 18:05:48,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 18:05:48,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 18:05:48,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 18:05:48,647 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 123 [2021-03-24 18:05:48,648 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 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) [2021-03-24 18:05:48,648 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 18:05:48,648 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 123 [2021-03-24 18:05:48,648 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 18:05:48,671 INFO L129 PetriNetUnfolder]: 2/41 cut-off events. [2021-03-24 18:05:48,671 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-03-24 18:05:48,671 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 41 events. 2/41 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 90 event pairs, 0 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 56. Up to 7 conditions per place. [2021-03-24 18:05:48,671 INFO L132 encePairwiseOnDemand]: 118/123 looper letters, 5 selfloop transitions, 5 changer transitions 1/31 dead transitions. [2021-03-24 18:05:48,671 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 31 transitions, 127 flow [2021-03-24 18:05:48,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 18:05:48,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 18:05:48,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 517 transitions. [2021-03-24 18:05:48,673 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8406504065040651 [2021-03-24 18:05:48,673 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 517 transitions. [2021-03-24 18:05:48,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 517 transitions. [2021-03-24 18:05:48,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 18:05:48,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 517 transitions. [2021-03-24 18:05:48,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.4) internal successors, (517), 5 states have internal predecessors, (517), 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) [2021-03-24 18:05:48,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 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) [2021-03-24 18:05:48,675 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 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) [2021-03-24 18:05:48,675 INFO L185 Difference]: Start difference. First operand has 37 places, 29 transitions, 98 flow. Second operand 5 states and 517 transitions. [2021-03-24 18:05:48,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 31 transitions, 127 flow [2021-03-24 18:05:48,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 31 transitions, 122 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-24 18:05:48,677 INFO L241 Difference]: Finished difference. Result has 42 places, 30 transitions, 114 flow [2021-03-24 18:05:48,677 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2021-03-24 18:05:48,677 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2021-03-24 18:05:48,677 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 114 flow [2021-03-24 18:05:48,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 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) [2021-03-24 18:05:48,677 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 18:05:48,677 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 18:05:48,678 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 18:05:48,678 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 18:05:48,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 18:05:48,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1699881713, now seen corresponding path program 1 times [2021-03-24 18:05:48,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 18:05:48,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313718826] [2021-03-24 18:05:48,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 18:05:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 18:05:48,694 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 18:05:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 18:05:48,707 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 18:05:48,722 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 18:05:48,722 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 18:05:48,722 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 18:05:48,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 06:05:48 BasicIcfg [2021-03-24 18:05:48,743 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 18:05:48,744 INFO L168 Benchmark]: Toolchain (without parser) took 2558.06 ms. Allocated memory is still 381.7 MB. Free memory was 345.0 MB in the beginning and 217.2 MB in the end (delta: 127.7 MB). Peak memory consumption was 130.5 MB. Max. memory is 16.0 GB. [2021-03-24 18:05:48,744 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 381.7 MB. Free memory was 363.2 MB in the beginning and 363.1 MB in the end (delta: 75.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 18:05:48,744 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.98 ms. Allocated memory is still 381.7 MB. Free memory was 344.7 MB in the beginning and 346.0 MB in the end (delta: -1.2 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. [2021-03-24 18:05:48,745 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.28 ms. Allocated memory is still 381.7 MB. Free memory was 346.0 MB in the beginning and 343.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 18:05:48,745 INFO L168 Benchmark]: Boogie Preprocessor took 31.63 ms. Allocated memory is still 381.7 MB. Free memory was 343.9 MB in the beginning and 342.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 18:05:48,745 INFO L168 Benchmark]: RCFGBuilder took 311.61 ms. Allocated memory is still 381.7 MB. Free memory was 342.8 MB in the beginning and 316.6 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-24 18:05:48,746 INFO L168 Benchmark]: TraceAbstraction took 1826.97 ms. Allocated memory is still 381.7 MB. Free memory was 316.6 MB in the beginning and 217.2 MB in the end (delta: 99.4 MB). Peak memory consumption was 102.5 MB. Max. memory is 16.0 GB. [2021-03-24 18:05:48,747 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 381.7 MB. Free memory was 363.2 MB in the beginning and 363.1 MB in the end (delta: 75.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 340.98 ms. Allocated memory is still 381.7 MB. Free memory was 344.7 MB in the beginning and 346.0 MB in the end (delta: -1.2 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 42.28 ms. Allocated memory is still 381.7 MB. Free memory was 346.0 MB in the beginning and 343.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.63 ms. Allocated memory is still 381.7 MB. Free memory was 343.9 MB in the beginning and 342.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 311.61 ms. Allocated memory is still 381.7 MB. Free memory was 342.8 MB in the beginning and 316.6 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1826.97 ms. Allocated memory is still 381.7 MB. Free memory was 316.6 MB in the beginning and 217.2 MB in the end (delta: 99.4 MB). Peak memory consumption was 102.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1128.0ms, 72 PlacesBefore, 37 PlacesAfterwards, 65 TransitionsBefore, 30 TransitionsAfterwards, 1008 CoEnabledTransitionPairs, 4 FixpointIterations, 16 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 40 TotalNumberOfCompositions, 1277 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 790, positive: 751, positive conditional: 0, positive unconditional: 751, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 619, positive: 594, positive conditional: 0, positive unconditional: 594, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 619, positive: 594, positive conditional: 0, positive unconditional: 594, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 619, positive: 578, positive conditional: 0, positive unconditional: 578, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 41, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 96, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 67, negative conditional: 0, negative unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 790, positive: 157, positive conditional: 0, positive unconditional: 157, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 619, unknown conditional: 0, unknown unconditional: 619] , Statistics on independence cache: Total cache size (in pairs): 75, Positive cache size: 67, Positive conditional cache size: 0, Positive unconditional cache size: 67, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={7:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, data=0, mutex={7:0}] [L707] 1 data++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={7:0}] [L709] 1 return 0; [L714] 2 data+=2 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={7:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={7:0}] [L716] 2 return 0; [L721] COND TRUE 3 data >= 3 [L722] 3 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={7:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 1708.5ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 157.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1194.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 9 SDslu, 2 SDs, 0 SdLazy, 45 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 32.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=4, InterpolantAutomatonStates: 15, 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: 11.2ms SsaConstructionTime, 62.5ms SatisfiabilityAnalysisTime, 142.9ms InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 incorrect! Received shutdown request...