/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/lazy01.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-28 14:49:51,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-28 14:49:51,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-28 14:49:51,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-28 14:49:51,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-28 14:49:51,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-28 14:49:51,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-28 14:49:51,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-28 14:49:51,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-28 14:49:51,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-28 14:49:51,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-28 14:49:51,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-28 14:49:51,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-28 14:49:51,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-28 14:49:51,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-28 14:49:51,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-28 14:49:51,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-28 14:49:51,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-28 14:49:51,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-28 14:49:51,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-28 14:49:51,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-28 14:49:51,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-28 14:49:51,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-28 14:49:51,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-28 14:49:51,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-04-28 14:49:51,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-04-28 14:49:51,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-04-28 14:49:51,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-04-28 14:49:51,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-04-28 14:49:51,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-04-28 14:49:51,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-28 14:49:51,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-28 14:49:51,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-28 14:49:51,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-28 14:49:51,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-28 14:49:51,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-28 14:49:51,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-28 14:49:51,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-28 14:49:51,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-28 14:49:51,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-28 14:49:51,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-28 14:49:51,231 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2021-04-28 14:49:51,281 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-28 14:49:51,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-28 14:49:51,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-28 14:49:51,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-28 14:49:51,286 INFO L138 SettingsManager]: * Use SBE=true [2021-04-28 14:49:51,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-28 14:49:51,287 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-28 14:49:51,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-28 14:49:51,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-28 14:49:51,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-28 14:49:51,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-28 14:49:51,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-28 14:49:51,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-28 14:49:51,290 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-28 14:49:51,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-28 14:49:51,290 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-28 14:49:51,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-28 14:49:51,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-28 14:49:51,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-28 14:49:51,291 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-28 14:49:51,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-28 14:49:51,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-28 14:49:51,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-28 14:49:51,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-28 14:49:51,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-28 14:49:51,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-28 14:49:51,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-28 14:49:51,293 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-28 14:49:51,294 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-28 14:49:51,294 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-28 14:49:51,294 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-28 14:49:51,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-28 14:49:51,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-28 14:49:51,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-28 14:49:51,742 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-28 14:49:51,743 INFO L275 PluginConnector]: CDTParser initialized [2021-04-28 14:49:51,744 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.i [2021-04-28 14:49:51,838 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/161963a1c/5c234b9664a14631aaac846f330b7fb0/FLAGe5ff9b40f [2021-04-28 14:49:52,645 INFO L306 CDTParser]: Found 1 translation units. [2021-04-28 14:49:52,646 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i [2021-04-28 14:49:52,661 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/161963a1c/5c234b9664a14631aaac846f330b7fb0/FLAGe5ff9b40f [2021-04-28 14:49:52,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/161963a1c/5c234b9664a14631aaac846f330b7fb0 [2021-04-28 14:49:52,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-28 14:49:52,943 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-28 14:49:52,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-28 14:49:52,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-28 14:49:52,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-28 14:49:52,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 02:49:52" (1/1) ... [2021-04-28 14:49:52,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b9df3ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:49:52, skipping insertion in model container [2021-04-28 14:49:52,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 02:49:52" (1/1) ... [2021-04-28 14:49:52,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-28 14:49:52,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-28 14:49:53,371 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] [2021-04-28 14:49:53,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 14:49:53,402 INFO L203 MainTranslator]: Completed pre-run [2021-04-28 14:49:53,475 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] [2021-04-28 14:49:53,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 14:49:53,655 INFO L208 MainTranslator]: Completed translation [2021-04-28 14:49:53,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:49:53 WrapperNode [2021-04-28 14:49:53,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-28 14:49:53,657 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-28 14:49:53,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-28 14:49:53,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-28 14:49:53,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:49:53" (1/1) ... [2021-04-28 14:49:53,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:49:53" (1/1) ... [2021-04-28 14:49:53,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-28 14:49:53,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-28 14:49:53,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-28 14:49:53,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-28 14:49:53,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:49:53" (1/1) ... [2021-04-28 14:49:53,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:49:53" (1/1) ... [2021-04-28 14:49:53,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:49:53" (1/1) ... [2021-04-28 14:49:53,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:49:53" (1/1) ... [2021-04-28 14:49:53,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:49:53" (1/1) ... [2021-04-28 14:49:53,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:49:53" (1/1) ... [2021-04-28 14:49:53,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:49:53" (1/1) ... [2021-04-28 14:49:53,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-28 14:49:53,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-28 14:49:53,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-28 14:49:53,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-28 14:49:53,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:49:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-28 14:49:53,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-28 14:49:53,843 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-04-28 14:49:53,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-04-28 14:49:53,843 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-04-28 14:49:53,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-04-28 14:49:53,843 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-04-28 14:49:53,844 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-04-28 14:49:53,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-28 14:49:53,844 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-04-28 14:49:53,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-28 14:49:53,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-28 14:49:53,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-28 14:49:53,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-28 14:49:53,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-28 14:49:53,846 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-28 14:49:54,247 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-28 14:49:54,248 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-04-28 14:49:54,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 02:49:54 BoogieIcfgContainer [2021-04-28 14:49:54,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-28 14:49:54,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-28 14:49:54,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-28 14:49:54,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-28 14:49:54,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 02:49:52" (1/3) ... [2021-04-28 14:49:54,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ade34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 02:49:54, skipping insertion in model container [2021-04-28 14:49:54,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:49:53" (2/3) ... [2021-04-28 14:49:54,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ade34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 02:49:54, skipping insertion in model container [2021-04-28 14:49:54,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 02:49:54" (3/3) ... [2021-04-28 14:49:54,259 INFO L111 eAbstractionObserver]: Analyzing ICFG lazy01.i [2021-04-28 14:49:54,267 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-28 14:49:54,273 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-28 14:49:54,274 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-28 14:49:54,314 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,314 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,314 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,315 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,315 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,315 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,315 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,315 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,316 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,316 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,316 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,317 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,317 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,317 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,317 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,318 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,318 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,318 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,319 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,319 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,319 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,319 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,320 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,320 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,320 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,321 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,321 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,321 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,321 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,321 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,322 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,322 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,322 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,322 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,323 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,323 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,323 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,324 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,324 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,325 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,325 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,325 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,325 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,325 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,326 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,326 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,326 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,326 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,327 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,327 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,327 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,328 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,328 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,328 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,330 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,331 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,331 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,331 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,331 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,332 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,337 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,337 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,337 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,338 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,338 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,340 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,341 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,341 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,341 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,341 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 14:49:54,357 INFO L149 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2021-04-28 14:49:54,381 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-04-28 14:49:54,407 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-28 14:49:54,408 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-28 14:49:54,408 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-28 14:49:54,408 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-28 14:49:54,408 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-28 14:49:54,408 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-28 14:49:54,408 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-28 14:49:54,408 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-28 14:49:54,422 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 83 transitions, 208 flow [2021-04-28 14:49:54,477 INFO L129 PetriNetUnfolder]: 6/91 cut-off events. [2021-04-28 14:49:54,477 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-04-28 14:49:54,486 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. [2021-04-28 14:49:54,486 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 83 transitions, 208 flow [2021-04-28 14:49:54,504 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 65 transitions, 151 flow [2021-04-28 14:49:54,509 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 14:49:54,525 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 65 transitions, 151 flow [2021-04-28 14:49:54,532 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 65 transitions, 151 flow [2021-04-28 14:49:54,535 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 65 transitions, 151 flow [2021-04-28 14:49:54,583 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2021-04-28 14:49:54,584 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-04-28 14:49:54,586 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. [2021-04-28 14:49:54,590 INFO L146 LiptonReduction]: Number of co-enabled transitions 1008 [2021-04-28 14:50:01,005 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-04-28 14:50:02,589 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-04-28 14:50:03,623 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2021-04-28 14:50:03,804 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2021-04-28 14:50:04,278 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2021-04-28 14:50:04,450 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2021-04-28 14:50:05,250 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2021-04-28 14:50:05,462 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2021-04-28 14:50:05,972 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-04-28 14:50:06,167 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-04-28 14:50:06,386 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2021-04-28 14:50:06,629 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2021-04-28 14:50:06,824 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-04-28 14:50:07,033 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-04-28 14:50:08,245 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2021-04-28 14:50:08,377 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-04-28 14:50:08,667 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2021-04-28 14:50:08,795 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-04-28 14:50:10,619 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2021-04-28 14:50:10,725 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-04-28 14:50:10,963 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2021-04-28 14:50:11,072 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-04-28 14:50:11,486 WARN L205 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 106 [2021-04-28 14:50:11,664 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-04-28 14:50:12,115 WARN L205 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 106 [2021-04-28 14:50:12,307 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-04-28 14:50:12,725 WARN L205 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 101 [2021-04-28 14:50:12,892 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-04-28 14:50:13,308 WARN L205 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 101 [2021-04-28 14:50:13,476 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-04-28 14:50:13,706 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2021-04-28 14:50:13,811 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-04-28 14:50:14,046 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2021-04-28 14:50:14,153 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-04-28 14:50:14,782 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-04-28 14:50:15,709 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-04-28 14:50:15,871 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-04-28 14:50:16,048 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-04-28 14:50:16,217 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-04-28 14:50:16,886 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-04-28 14:50:17,114 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-28 14:50:17,243 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-04-28 14:50:17,371 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-28 14:50:17,495 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-04-28 14:50:17,706 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-04-28 14:50:18,114 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-04-28 14:50:18,328 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-04-28 14:50:18,559 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-04-28 14:50:18,779 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-04-28 14:50:19,075 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-04-28 14:50:19,276 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-04-28 14:50:19,474 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-04-28 14:50:19,676 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-04-28 14:50:19,873 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-04-28 14:50:20,212 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-04-28 14:50:20,428 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-04-28 14:50:20,683 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-04-28 14:50:20,929 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-04-28 14:50:21,065 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-28 14:50:21,199 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-04-28 14:50:21,335 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-28 14:50:21,462 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-04-28 14:50:21,515 INFO L158 LiptonReduction]: Checked pairs total: 7613 [2021-04-28 14:50:21,515 INFO L160 LiptonReduction]: Total number of compositions: 130 [2021-04-28 14:50:21,519 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 27015 [2021-04-28 14:50:21,540 INFO L129 PetriNetUnfolder]: 0/72 cut-off events. [2021-04-28 14:50:21,541 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-28 14:50:21,541 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 14:50:21,542 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 14:50:21,542 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 14:50:21,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 14:50:21,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1001522531, now seen corresponding path program 1 times [2021-04-28 14:50:21,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 14:50:21,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899485925] [2021-04-28 14:50:21,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 14:50:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 14:50:21,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 14:50:21,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 14:50:21,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 14:50:21,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899485925] [2021-04-28 14:50:21,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 14:50:21,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-28 14:50:21,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706745688] [2021-04-28 14:50:21,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-28 14:50:21,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 14:50:21,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-28 14:50:21,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-28 14:50:21,928 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 213 [2021-04-28 14:50:21,932 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 86 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 14:50:21,933 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 14:50:21,933 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 213 [2021-04-28 14:50:21,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 14:50:22,026 INFO L129 PetriNetUnfolder]: 27/206 cut-off events. [2021-04-28 14:50:22,026 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2021-04-28 14:50:22,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 206 events. 27/206 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1253 event pairs, 7 based on Foata normal form. 5/98 useless extension candidates. Maximal degree in co-relation 230. Up to 47 conditions per place. [2021-04-28 14:50:22,030 INFO L132 encePairwiseOnDemand]: 194/213 looper letters, 8 selfloop transitions, 4 changer transitions 42/88 dead transitions. [2021-04-28 14:50:22,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 88 transitions, 243 flow [2021-04-28 14:50:22,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-28 14:50:22,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-28 14:50:22,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 532 transitions. [2021-04-28 14:50:22,050 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8325508607198748 [2021-04-28 14:50:22,051 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 532 transitions. [2021-04-28 14:50:22,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 532 transitions. [2021-04-28 14:50:22,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 14:50:22,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 532 transitions. [2021-04-28 14:50:22,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 14:50:22,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 14:50:22,073 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 14:50:22,075 INFO L185 Difference]: Start difference. First operand has 93 places, 86 transitions, 193 flow. Second operand 3 states and 532 transitions. [2021-04-28 14:50:22,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 88 transitions, 243 flow [2021-04-28 14:50:22,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 88 transitions, 230 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-04-28 14:50:22,084 INFO L241 Difference]: Finished difference. Result has 89 places, 45 transitions, 120 flow [2021-04-28 14:50:22,087 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=89, PETRI_TRANSITIONS=45} [2021-04-28 14:50:22,088 INFO L343 CegarLoopForPetriNet]: 93 programPoint places, -4 predicate places. [2021-04-28 14:50:22,088 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 14:50:22,088 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 45 transitions, 120 flow [2021-04-28 14:50:22,088 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 45 transitions, 120 flow [2021-04-28 14:50:22,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 45 transitions, 120 flow [2021-04-28 14:50:22,101 INFO L129 PetriNetUnfolder]: 13/108 cut-off events. [2021-04-28 14:50:22,101 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 14:50:22,102 INFO L84 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 108 events. 13/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 537 event pairs, 4 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 129. Up to 26 conditions per place. [2021-04-28 14:50:22,104 INFO L146 LiptonReduction]: Number of co-enabled transitions 924 [2021-04-28 14:50:22,128 INFO L158 LiptonReduction]: Checked pairs total: 324 [2021-04-28 14:50:22,128 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 14:50:22,128 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 40 [2021-04-28 14:50:22,130 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 120 flow [2021-04-28 14:50:22,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 14:50:22,131 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 14:50:22,131 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 14:50:22,132 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-28 14:50:22,132 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 14:50:22,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 14:50:22,133 INFO L82 PathProgramCache]: Analyzing trace with hash -390485336, now seen corresponding path program 1 times [2021-04-28 14:50:22,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 14:50:22,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755180651] [2021-04-28 14:50:22,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 14:50:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 14:50:22,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 14:50:22,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 14:50:22,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 14:50:22,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-28 14:50:22,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 14:50:22,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 14:50:22,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 14:50:22,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755180651] [2021-04-28 14:50:22,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 14:50:22,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 14:50:22,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575475323] [2021-04-28 14:50:22,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-28 14:50:22,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 14:50:22,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-28 14:50:22,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-28 14:50:22,199 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 213 [2021-04-28 14:50:22,200 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 14:50:22,201 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 14:50:22,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 213 [2021-04-28 14:50:22,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 14:50:22,262 INFO L129 PetriNetUnfolder]: 10/189 cut-off events. [2021-04-28 14:50:22,262 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 14:50:22,263 INFO L84 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 189 events. 10/189 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 1462 event pairs, 0 based on Foata normal form. 47/142 useless extension candidates. Maximal degree in co-relation 323. Up to 72 conditions per place. [2021-04-28 14:50:22,264 INFO L132 encePairwiseOnDemand]: 201/213 looper letters, 1 selfloop transitions, 11 changer transitions 6/45 dead transitions. [2021-04-28 14:50:22,264 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 45 transitions, 152 flow [2021-04-28 14:50:22,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-28 14:50:22,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-28 14:50:22,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2021-04-28 14:50:22,267 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2021-04-28 14:50:22,267 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2021-04-28 14:50:22,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2021-04-28 14:50:22,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 14:50:22,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2021-04-28 14:50:22,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 14:50:22,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 14:50:22,272 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 14:50:22,272 INFO L185 Difference]: Start difference. First operand has 48 places, 45 transitions, 120 flow. Second operand 3 states and 355 transitions. [2021-04-28 14:50:22,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 45 transitions, 152 flow [2021-04-28 14:50:22,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-28 14:50:22,275 INFO L241 Difference]: Finished difference. Result has 49 places, 39 transitions, 122 flow [2021-04-28 14:50:22,275 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2021-04-28 14:50:22,276 INFO L343 CegarLoopForPetriNet]: 93 programPoint places, -44 predicate places. [2021-04-28 14:50:22,276 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 14:50:22,276 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 39 transitions, 122 flow [2021-04-28 14:50:22,277 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 39 transitions, 122 flow [2021-04-28 14:50:22,277 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 39 transitions, 122 flow [2021-04-28 14:50:22,294 INFO L129 PetriNetUnfolder]: 10/169 cut-off events. [2021-04-28 14:50:22,294 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 14:50:22,295 INFO L84 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 169 events. 10/169 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1240 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 280. Up to 56 conditions per place. [2021-04-28 14:50:22,297 INFO L146 LiptonReduction]: Number of co-enabled transitions 474 [2021-04-28 14:50:22,452 INFO L158 LiptonReduction]: Checked pairs total: 46 [2021-04-28 14:50:22,452 INFO L160 LiptonReduction]: Total number of compositions: 4 [2021-04-28 14:50:22,452 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 176 [2021-04-28 14:50:22,454 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 134 flow [2021-04-28 14:50:22,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 14:50:22,455 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 14:50:22,455 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 14:50:22,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-28 14:50:22,455 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 14:50:22,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 14:50:22,456 INFO L82 PathProgramCache]: Analyzing trace with hash -615352237, now seen corresponding path program 1 times [2021-04-28 14:50:22,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 14:50:22,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693963815] [2021-04-28 14:50:22,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 14:50:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 14:50:22,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 14:50:22,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 14:50:22,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 14:50:22,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 14:50:22,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 14:50:22,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693963815] [2021-04-28 14:50:22,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 14:50:22,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 14:50:22,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782604839] [2021-04-28 14:50:22,548 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 14:50:22,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 14:50:22,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 14:50:22,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-28 14:50:22,552 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 217 [2021-04-28 14:50:22,554 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 14:50:22,554 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 14:50:22,555 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 217 [2021-04-28 14:50:22,555 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 14:50:22,624 INFO L129 PetriNetUnfolder]: 10/165 cut-off events. [2021-04-28 14:50:22,624 INFO L130 PetriNetUnfolder]: For 30/37 co-relation queries the response was YES. [2021-04-28 14:50:22,625 INFO L84 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 165 events. 10/165 cut-off events. For 30/37 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1222 event pairs, 0 based on Foata normal form. 7/90 useless extension candidates. Maximal degree in co-relation 320. Up to 66 conditions per place. [2021-04-28 14:50:22,626 INFO L132 encePairwiseOnDemand]: 209/217 looper letters, 2 selfloop transitions, 6 changer transitions 8/44 dead transitions. [2021-04-28 14:50:22,626 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 44 transitions, 164 flow [2021-04-28 14:50:22,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 14:50:22,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 14:50:22,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 682 transitions. [2021-04-28 14:50:22,629 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7857142857142857 [2021-04-28 14:50:22,629 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 682 transitions. [2021-04-28 14:50:22,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 682 transitions. [2021-04-28 14:50:22,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 14:50:22,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 682 transitions. [2021-04-28 14:50:22,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 170.5) internal successors, (682), 4 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 14:50:22,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 14:50:22,636 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 14:50:22,636 INFO L185 Difference]: Start difference. First operand has 46 places, 41 transitions, 134 flow. Second operand 4 states and 682 transitions. [2021-04-28 14:50:22,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 44 transitions, 164 flow [2021-04-28 14:50:22,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 149 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-28 14:50:22,639 INFO L241 Difference]: Finished difference. Result has 49 places, 36 transitions, 128 flow [2021-04-28 14:50:22,639 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2021-04-28 14:50:22,640 INFO L343 CegarLoopForPetriNet]: 93 programPoint places, -44 predicate places. [2021-04-28 14:50:22,640 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 14:50:22,640 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 36 transitions, 128 flow [2021-04-28 14:50:22,640 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 36 transitions, 128 flow [2021-04-28 14:50:22,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 36 transitions, 128 flow [2021-04-28 14:50:22,655 INFO L129 PetriNetUnfolder]: 10/144 cut-off events. [2021-04-28 14:50:22,655 INFO L130 PetriNetUnfolder]: For 36/37 co-relation queries the response was YES. [2021-04-28 14:50:22,655 INFO L84 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 144 events. 10/144 cut-off events. For 36/37 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1063 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 228. Up to 27 conditions per place. [2021-04-28 14:50:22,657 INFO L146 LiptonReduction]: Number of co-enabled transitions 364 [2021-04-28 14:50:22,916 INFO L158 LiptonReduction]: Checked pairs total: 50 [2021-04-28 14:50:22,916 INFO L160 LiptonReduction]: Total number of compositions: 5 [2021-04-28 14:50:22,917 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 277 [2021-04-28 14:50:22,918 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 133 flow [2021-04-28 14:50:22,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 14:50:22,919 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 14:50:22,920 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 14:50:22,920 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-28 14:50:22,920 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 14:50:22,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 14:50:22,921 INFO L82 PathProgramCache]: Analyzing trace with hash -371898955, now seen corresponding path program 1 times [2021-04-28 14:50:22,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 14:50:22,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526526774] [2021-04-28 14:50:22,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 14:50:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-28 14:50:22,954 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-28 14:50:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-28 14:50:22,977 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-28 14:50:23,004 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-04-28 14:50:23,004 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-04-28 14:50:23,004 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-28 14:50:23,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 02:50:23 BasicIcfg [2021-04-28 14:50:23,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-28 14:50:23,046 INFO L168 Benchmark]: Toolchain (without parser) took 30152.81 ms. Allocated memory was 302.0 MB in the beginning and 553.6 MB in the end (delta: 251.7 MB). Free memory was 275.8 MB in the beginning and 303.8 MB in the end (delta: -28.0 MB). Peak memory consumption was 225.1 MB. Max. memory is 16.0 GB. [2021-04-28 14:50:23,046 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 302.0 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-28 14:50:23,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 710.97 ms. Allocated memory is still 302.0 MB. Free memory was 272.6 MB in the beginning and 273.5 MB in the end (delta: -904.4 kB). Peak memory consumption was 24.7 MB. Max. memory is 16.0 GB. [2021-04-28 14:50:23,048 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.21 ms. Allocated memory is still 302.0 MB. Free memory was 273.5 MB in the beginning and 272.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-28 14:50:23,048 INFO L168 Benchmark]: Boogie Preprocessor took 28.06 ms. Allocated memory is still 302.0 MB. Free memory was 272.4 MB in the beginning and 270.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-28 14:50:23,049 INFO L168 Benchmark]: RCFGBuilder took 517.10 ms. Allocated memory is still 302.0 MB. Free memory was 270.3 MB in the beginning and 245.2 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-04-28 14:50:23,050 INFO L168 Benchmark]: TraceAbstraction took 28792.67 ms. Allocated memory was 302.0 MB in the beginning and 553.6 MB in the end (delta: 251.7 MB). Free memory was 245.2 MB in the beginning and 303.8 MB in the end (delta: -58.6 MB). Peak memory consumption was 194.1 MB. Max. memory is 16.0 GB. [2021-04-28 14:50:23,058 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 302.0 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 710.97 ms. Allocated memory is still 302.0 MB. Free memory was 272.6 MB in the beginning and 273.5 MB in the end (delta: -904.4 kB). Peak memory consumption was 24.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 46.21 ms. Allocated memory is still 302.0 MB. Free memory was 273.5 MB in the beginning and 272.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.06 ms. Allocated memory is still 302.0 MB. Free memory was 272.4 MB in the beginning and 270.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 517.10 ms. Allocated memory is still 302.0 MB. Free memory was 270.3 MB in the beginning and 245.2 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 28792.67 ms. Allocated memory was 302.0 MB in the beginning and 553.6 MB in the end (delta: 251.7 MB). Free memory was 245.2 MB in the beginning and 303.8 MB in the end (delta: -58.6 MB). Peak memory consumption was 194.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 26983.3ms, 72 PlacesBefore, 93 PlacesAfterwards, 65 TransitionsBefore, 86 TransitionsAfterwards, 1008 CoEnabledTransitionPairs, 9 FixpointIterations, 101 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 130 TotalNumberOfCompositions, 7613 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2394, positive: 2167, positive conditional: 2167, positive unconditional: 0, negative: 227, negative conditional: 227, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 822, positive: 792, positive conditional: 0, positive unconditional: 792, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 822, positive: 792, positive conditional: 0, positive unconditional: 792, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 822, positive: 765, positive conditional: 0, positive unconditional: 765, negative: 57, negative conditional: 0, negative unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 57, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 250, positive: 86, positive conditional: 0, positive unconditional: 86, negative: 164, negative conditional: 0, negative unconditional: 164, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2394, positive: 1375, positive conditional: 1375, positive unconditional: 0, negative: 197, negative conditional: 197, negative unconditional: 0, unknown: 822, unknown conditional: 822, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 822, Positive cache size: 792, Positive conditional cache size: 792, Positive unconditional cache size: 0, Negative cache size: 30, Negative conditional cache size: 30, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 39.6ms, 89 PlacesBefore, 48 PlacesAfterwards, 45 TransitionsBefore, 45 TransitionsAfterwards, 924 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 324 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 136, positive: 124, positive conditional: 124, positive unconditional: 0, negative: 12, negative conditional: 12, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 16, positive: 13, positive conditional: 1, positive unconditional: 12, negative: 3, negative conditional: 2, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 16, positive: 13, positive conditional: 1, positive unconditional: 12, negative: 3, negative conditional: 2, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 16, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 3, negative conditional: 2, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 14, positive: 5, positive conditional: 5, positive unconditional: 0, negative: 9, negative conditional: 7, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 136, positive: 111, positive conditional: 111, positive unconditional: 0, negative: 9, negative conditional: 9, negative unconditional: 0, unknown: 16, unknown conditional: 16, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 838, Positive cache size: 805, Positive conditional cache size: 805, Positive unconditional cache size: 0, Negative cache size: 33, Negative conditional cache size: 33, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 175.5ms, 49 PlacesBefore, 46 PlacesAfterwards, 39 TransitionsBefore, 41 TransitionsAfterwards, 474 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 46 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 46, positive: 46, positive conditional: 46, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 26, positive: 26, positive conditional: 0, positive unconditional: 26, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 26, positive: 26, positive conditional: 0, positive unconditional: 26, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 26, positive: 26, positive conditional: 0, positive unconditional: 26, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 46, positive: 20, positive conditional: 20, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 26, unknown conditional: 26, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 864, Positive cache size: 831, Positive conditional cache size: 831, Positive unconditional cache size: 0, Negative cache size: 33, Negative conditional cache size: 33, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 276.3ms, 49 PlacesBefore, 44 PlacesAfterwards, 36 TransitionsBefore, 36 TransitionsAfterwards, 364 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 50 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 50, positive: 50, positive conditional: 50, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 10, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 10, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 10, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 50, positive: 40, positive conditional: 40, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 10, unknown conditional: 10, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 874, Positive cache size: 841, Positive conditional cache size: 841, Positive unconditional cache size: 0, Negative cache size: 33, Negative conditional cache size: 33, Negative unconditional cache size: 0 - 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={11:0}] [L707] 1 data++ VAL [arg={0:0}, arg={0:0}, data=1, mutex={11:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={11:0}] [L714] 2 data+=2 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={11:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={11:0}] [L721] COND TRUE 3 data >= 3 [L722] 3 reach_error() VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={11:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 13.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 28602.7ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 338.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 27118.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 27 SDtfs, 6 SDslu, 0 SDs, 0 SdLazy, 42 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 80.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=193occurred in iteration=0, InterpolantAutomatonStates: 10, 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: 17.2ms SsaConstructionTime, 126.6ms SatisfiabilityAnalysisTime, 253.7ms InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 66 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 incorrect! Received shutdown request...