/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/concurrent/pthreads/regression/pthreadJoinCorrectThreadId.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 03:20:39,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 03:20:39,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 03:20:39,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 03:20:39,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 03:20:39,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 03:20:39,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 03:20:39,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 03:20:39,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 03:20:39,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 03:20:39,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 03:20:39,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 03:20:39,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 03:20:39,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 03:20:39,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 03:20:39,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 03:20:39,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 03:20:39,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 03:20:39,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 03:20:39,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 03:20:39,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 03:20:39,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 03:20:39,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 03:20:39,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 03:20:39,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 03:20:39,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 03:20:39,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 03:20:39,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 03:20:39,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 03:20:39,231 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 03:20:39,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 03:20:39,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 03:20:39,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 03:20:39,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 03:20:39,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 03:20:39,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 03:20:39,238 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 [2021-03-26 03:20:39,273 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 03:20:39,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 03:20:39,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 03:20:39,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 03:20:39,277 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 03:20:39,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 03:20:39,278 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 03:20:39,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 03:20:39,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 03:20:39,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 03:20:39,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 03:20:39,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 03:20:39,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 03:20:39,280 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 03:20:39,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 03:20:39,280 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 03:20:39,280 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 03:20:39,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 03:20:39,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 03:20:39,281 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 03:20:39,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 03:20:39,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 03:20:39,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 03:20:39,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 03:20:39,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 03:20:39,282 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 03:20:39,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 03:20:39,282 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 03:20:39,282 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 03:20:39,283 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 03:20:39,283 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 03:20:39,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 03:20:39,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 03:20:39,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 03:20:39,583 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 03:20:39,584 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 03:20:39,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadJoinCorrectThreadId.c [2021-03-26 03:20:39,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/954602361/6884b73757d34101a41f7f545e760d0c/FLAGbae8eb7a2 [2021-03-26 03:20:40,040 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 03:20:40,040 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadJoinCorrectThreadId.c [2021-03-26 03:20:40,040 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-26 03:20:40,068 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/954602361/6884b73757d34101a41f7f545e760d0c/FLAGbae8eb7a2 [2021-03-26 03:20:40,452 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/954602361/6884b73757d34101a41f7f545e760d0c [2021-03-26 03:20:40,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 03:20:40,460 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 03:20:40,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 03:20:40,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 03:20:40,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 03:20:40,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 03:20:40" (1/1) ... [2021-03-26 03:20:40,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be0cd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:20:40, skipping insertion in model container [2021-03-26 03:20:40,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 03:20:40" (1/1) ... [2021-03-26 03:20:40,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 03:20:40,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 03:20:40,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 03:20:40,617 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 03:20:40,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 03:20:40,665 INFO L208 MainTranslator]: Completed translation [2021-03-26 03:20:40,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:20:40 WrapperNode [2021-03-26 03:20:40,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 03:20:40,674 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 03:20:40,674 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 03:20:40,674 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 03:20:40,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:20:40" (1/1) ... [2021-03-26 03:20:40,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:20:40" (1/1) ... [2021-03-26 03:20:40,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 03:20:40,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 03:20:40,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 03:20:40,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 03:20:40,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:20:40" (1/1) ... [2021-03-26 03:20:40,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:20:40" (1/1) ... [2021-03-26 03:20:40,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:20:40" (1/1) ... [2021-03-26 03:20:40,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:20:40" (1/1) ... [2021-03-26 03:20:40,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:20:40" (1/1) ... [2021-03-26 03:20:40,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:20:40" (1/1) ... [2021-03-26 03:20:40,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:20:40" (1/1) ... [2021-03-26 03:20:40,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 03:20:40,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 03:20:40,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 03:20:40,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 03:20:40,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:20:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 03:20:40,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 03:20:40,806 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2021-03-26 03:20:40,806 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2021-03-26 03:20:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-26 03:20:40,807 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-26 03:20:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 03:20:40,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 03:20:40,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-26 03:20:40,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 03:20:40,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 03:20:40,810 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 03:20:41,029 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 03:20:41,029 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-26 03:20:41,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 03:20:41 BoogieIcfgContainer [2021-03-26 03:20:41,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 03:20:41,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 03:20:41,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 03:20:41,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 03:20:41,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 03:20:40" (1/3) ... [2021-03-26 03:20:41,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264bd581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 03:20:41, skipping insertion in model container [2021-03-26 03:20:41,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:20:40" (2/3) ... [2021-03-26 03:20:41,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264bd581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 03:20:41, skipping insertion in model container [2021-03-26 03:20:41,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 03:20:41" (3/3) ... [2021-03-26 03:20:41,037 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadJoinCorrectThreadId.c [2021-03-26 03:20:41,042 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 03:20:41,045 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 03:20:41,046 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 03:20:41,073 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,074 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,074 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,074 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,074 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,074 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,074 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,074 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,075 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,075 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,075 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,075 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,075 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,075 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,076 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,076 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,076 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#t~nondet0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,076 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#t~nondet0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,076 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,077 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,077 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,077 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,077 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,077 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,078 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,078 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,078 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,078 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,078 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,078 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,079 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,079 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,079 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,079 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,079 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,079 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,080 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,080 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,080 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,080 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,080 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,080 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,080 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,081 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,081 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,081 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,081 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,081 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,083 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,083 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,083 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,083 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,103 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,103 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#t~nondet0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,103 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,103 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,104 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,104 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,104 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,104 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,115 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,116 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,116 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,116 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:20:41,137 INFO L149 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2021-03-26 03:20:41,162 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-26 03:20:41,188 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:20:41,189 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:20:41,189 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:20:41,189 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:20:41,189 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:20:41,189 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:20:41,189 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:20:41,189 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:20:41,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 50 transitions, 128 flow [2021-03-26 03:20:41,255 INFO L129 PetriNetUnfolder]: 4/51 cut-off events. [2021-03-26 03:20:41,255 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-26 03:20:41,259 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 51 events. 4/51 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 37. Up to 5 conditions per place. [2021-03-26 03:20:41,259 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 50 transitions, 128 flow [2021-03-26 03:20:41,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 34 transitions, 89 flow [2021-03-26 03:20:41,273 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:20:41,287 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 34 transitions, 89 flow [2021-03-26 03:20:41,292 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 34 transitions, 89 flow [2021-03-26 03:20:41,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 34 transitions, 89 flow [2021-03-26 03:20:41,319 INFO L129 PetriNetUnfolder]: 2/37 cut-off events. [2021-03-26 03:20:41,320 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-26 03:20:41,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 37 events. 2/37 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 15 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 30. Up to 5 conditions per place. [2021-03-26 03:20:41,323 INFO L142 LiptonReduction]: Number of co-enabled transitions 100 [2021-03-26 03:20:42,295 INFO L154 LiptonReduction]: Checked pairs total: 45 [2021-03-26 03:20:42,296 INFO L156 LiptonReduction]: Total number of compositions: 19 [2021-03-26 03:20:42,298 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1026 [2021-03-26 03:20:42,311 INFO L129 PetriNetUnfolder]: 2/12 cut-off events. [2021-03-26 03:20:42,311 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 03:20:42,311 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:20:42,312 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:20:42,313 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thread0Thread1of1ForFork1Err0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:20:42,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:20:42,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1754298108, now seen corresponding path program 1 times [2021-03-26 03:20:42,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:20:42,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732715604] [2021-03-26 03:20:42,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:20:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:20:42,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:20:42,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:20:42,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:20:42,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:20:42,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:20:42,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-26 03:20:42,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:20:42,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:20:42,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:20:42,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732715604] [2021-03-26 03:20:42,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:20:42,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 03:20:42,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304515639] [2021-03-26 03:20:42,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 03:20:42,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:20:42,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 03:20:42,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-26 03:20:42,497 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 72 [2021-03-26 03:20:42,499 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 15 transitions, 51 flow. Second operand has 5 states, 5 states have (on average 46.2) internal successors, (231), 5 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:20:42,499 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:20:42,499 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 72 [2021-03-26 03:20:42,500 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:20:42,581 INFO L129 PetriNetUnfolder]: 11/42 cut-off events. [2021-03-26 03:20:42,582 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2021-03-26 03:20:42,582 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 42 events. 11/42 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 88 event pairs, 5 based on Foata normal form. 2/39 useless extension candidates. Maximal degree in co-relation 79. Up to 25 conditions per place. [2021-03-26 03:20:42,583 INFO L132 encePairwiseOnDemand]: 65/72 looper letters, 13 selfloop transitions, 6 changer transitions 0/23 dead transitions. [2021-03-26 03:20:42,583 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 23 transitions, 117 flow [2021-03-26 03:20:42,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 03:20:42,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 03:20:42,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 291 transitions. [2021-03-26 03:20:42,595 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6736111111111112 [2021-03-26 03:20:42,595 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 291 transitions. [2021-03-26 03:20:42,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 291 transitions. [2021-03-26 03:20:42,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:20:42,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 291 transitions. [2021-03-26 03:20:42,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 48.5) internal successors, (291), 6 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:20:42,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:20:42,608 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:20:42,609 INFO L185 Difference]: Start difference. First operand has 19 places, 15 transitions, 51 flow. Second operand 6 states and 291 transitions. [2021-03-26 03:20:42,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 23 transitions, 117 flow [2021-03-26 03:20:42,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 23 transitions, 95 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-26 03:20:42,613 INFO L241 Difference]: Finished difference. Result has 23 places, 19 transitions, 75 flow [2021-03-26 03:20:42,615 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=75, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2021-03-26 03:20:42,616 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 4 predicate places. [2021-03-26 03:20:42,616 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:20:42,616 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 19 transitions, 75 flow [2021-03-26 03:20:42,616 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 19 transitions, 75 flow [2021-03-26 03:20:42,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 23 places, 19 transitions, 75 flow [2021-03-26 03:20:42,621 INFO L129 PetriNetUnfolder]: 4/27 cut-off events. [2021-03-26 03:20:42,621 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 03:20:42,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 27 events. 4/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 24. Up to 6 conditions per place. [2021-03-26 03:20:42,622 INFO L142 LiptonReduction]: Number of co-enabled transitions 22 [2021-03-26 03:20:42,664 INFO L154 LiptonReduction]: Checked pairs total: 1 [2021-03-26 03:20:42,664 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 03:20:42,664 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 48 [2021-03-26 03:20:42,666 INFO L480 AbstractCegarLoop]: Abstraction has has 22 places, 18 transitions, 73 flow [2021-03-26 03:20:42,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 46.2) internal successors, (231), 5 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:20:42,666 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:20:42,666 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:20:42,666 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 03:20:42,666 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thread0Thread1of1ForFork1Err0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:20:42,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:20:42,667 INFO L82 PathProgramCache]: Analyzing trace with hash 2114471298, now seen corresponding path program 2 times [2021-03-26 03:20:42,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:20:42,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182280417] [2021-03-26 03:20:42,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:20:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:20:42,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:20:42,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 03:20:42,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:20:42,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:20:42,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:20:42,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:20:42,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:20:42,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-26 03:20:42,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:20:42,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:20:42,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:20:42,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182280417] [2021-03-26 03:20:42,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:20:42,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:20:42,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745558218] [2021-03-26 03:20:42,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:20:42,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:20:42,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:20:42,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:20:42,771 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 73 [2021-03-26 03:20:42,772 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 18 transitions, 73 flow. Second operand has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:20:42,772 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:20:42,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 73 [2021-03-26 03:20:42,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:20:42,874 INFO L129 PetriNetUnfolder]: 13/46 cut-off events. [2021-03-26 03:20:42,874 INFO L130 PetriNetUnfolder]: For 19/20 co-relation queries the response was YES. [2021-03-26 03:20:42,874 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 46 events. 13/46 cut-off events. For 19/20 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 125 event pairs, 1 based on Foata normal form. 3/43 useless extension candidates. Maximal degree in co-relation 81. Up to 14 conditions per place. [2021-03-26 03:20:42,875 INFO L132 encePairwiseOnDemand]: 66/73 looper letters, 16 selfloop transitions, 13 changer transitions 0/31 dead transitions. [2021-03-26 03:20:42,875 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 171 flow [2021-03-26 03:20:42,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 03:20:42,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 03:20:42,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 324 transitions. [2021-03-26 03:20:42,881 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5547945205479452 [2021-03-26 03:20:42,882 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 324 transitions. [2021-03-26 03:20:42,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 324 transitions. [2021-03-26 03:20:42,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:20:42,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 324 transitions. [2021-03-26 03:20:42,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 40.5) internal successors, (324), 8 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:20:42,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 73.0) internal successors, (657), 9 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:20:42,888 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 73.0) internal successors, (657), 9 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:20:42,889 INFO L185 Difference]: Start difference. First operand has 22 places, 18 transitions, 73 flow. Second operand 8 states and 324 transitions. [2021-03-26 03:20:42,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 171 flow [2021-03-26 03:20:42,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 31 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:20:42,891 INFO L241 Difference]: Finished difference. Result has 30 places, 24 transitions, 132 flow [2021-03-26 03:20:42,891 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=132, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2021-03-26 03:20:42,892 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 11 predicate places. [2021-03-26 03:20:42,892 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:20:42,892 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 24 transitions, 132 flow [2021-03-26 03:20:42,893 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 24 transitions, 132 flow [2021-03-26 03:20:42,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 24 transitions, 132 flow [2021-03-26 03:20:42,897 INFO L129 PetriNetUnfolder]: 7/36 cut-off events. [2021-03-26 03:20:42,898 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-03-26 03:20:42,898 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 36 events. 7/36 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 87 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 49. Up to 7 conditions per place. [2021-03-26 03:20:42,898 INFO L142 LiptonReduction]: Number of co-enabled transitions 16 [2021-03-26 03:20:42,900 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:20:42,900 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:20:42,900 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-26 03:20:42,901 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 132 flow [2021-03-26 03:20:42,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:20:42,902 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:20:42,902 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:20:42,902 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 03:20:42,902 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thread0Thread1of1ForFork1Err0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:20:42,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:20:42,903 INFO L82 PathProgramCache]: Analyzing trace with hash 2103083448, now seen corresponding path program 3 times [2021-03-26 03:20:42,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:20:42,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681387410] [2021-03-26 03:20:42,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:20:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:20:42,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:20:42,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 03:20:42,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:20:42,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:20:42,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:20:42,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-26 03:20:42,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:20:42,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-26 03:20:42,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:20:42,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:20:42,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:20:42,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681387410] [2021-03-26 03:20:42,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:20:42,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:20:42,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981535506] [2021-03-26 03:20:42,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:20:42,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:20:42,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:20:42,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:20:42,948 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 73 [2021-03-26 03:20:42,949 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 132 flow. Second operand has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:20:42,949 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:20:42,949 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 73 [2021-03-26 03:20:42,949 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:20:43,034 INFO L129 PetriNetUnfolder]: 9/38 cut-off events. [2021-03-26 03:20:43,034 INFO L130 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2021-03-26 03:20:43,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 38 events. 9/38 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 85 event pairs, 0 based on Foata normal form. 2/36 useless extension candidates. Maximal degree in co-relation 83. Up to 12 conditions per place. [2021-03-26 03:20:43,035 INFO L132 encePairwiseOnDemand]: 66/73 looper letters, 14 selfloop transitions, 10 changer transitions 0/26 dead transitions. [2021-03-26 03:20:43,035 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 177 flow [2021-03-26 03:20:43,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 03:20:43,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 03:20:43,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 279 transitions. [2021-03-26 03:20:43,037 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5459882583170255 [2021-03-26 03:20:43,037 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 279 transitions. [2021-03-26 03:20:43,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 279 transitions. [2021-03-26 03:20:43,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:20:43,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 279 transitions. [2021-03-26 03:20:43,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 39.857142857142854) internal successors, (279), 7 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:20:43,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 73.0) internal successors, (584), 8 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:20:43,040 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 73.0) internal successors, (584), 8 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:20:43,040 INFO L185 Difference]: Start difference. First operand has 30 places, 24 transitions, 132 flow. Second operand 7 states and 279 transitions. [2021-03-26 03:20:43,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 177 flow [2021-03-26 03:20:43,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 167 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-03-26 03:20:43,042 INFO L241 Difference]: Finished difference. Result has 35 places, 22 transitions, 136 flow [2021-03-26 03:20:43,042 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=136, PETRI_PLACES=35, PETRI_TRANSITIONS=22} [2021-03-26 03:20:43,042 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 16 predicate places. [2021-03-26 03:20:43,042 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:20:43,042 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 22 transitions, 136 flow [2021-03-26 03:20:43,043 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 22 transitions, 136 flow [2021-03-26 03:20:43,043 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 22 transitions, 136 flow [2021-03-26 03:20:43,048 INFO L129 PetriNetUnfolder]: 6/33 cut-off events. [2021-03-26 03:20:43,048 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-26 03:20:43,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 33 events. 6/33 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 67 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 61. Up to 6 conditions per place. [2021-03-26 03:20:43,049 INFO L142 LiptonReduction]: Number of co-enabled transitions 10 [2021-03-26 03:20:43,050 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:20:43,050 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:20:43,050 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-26 03:20:43,051 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 136 flow [2021-03-26 03:20:43,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:20:43,051 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:20:43,051 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:20:43,052 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 03:20:43,052 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thread0Thread1of1ForFork1Err0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:20:43,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:20:43,052 INFO L82 PathProgramCache]: Analyzing trace with hash -2105471272, now seen corresponding path program 1 times [2021-03-26 03:20:43,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:20:43,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037858799] [2021-03-26 03:20:43,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:20:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:20:43,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:20:43,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:20:43,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:20:43,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 03:20:43,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:20:43,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037858799] [2021-03-26 03:20:43,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:20:43,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 03:20:43,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769574435] [2021-03-26 03:20:43,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:20:43,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:20:43,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:20:43,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:20:43,077 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 73 [2021-03-26 03:20:43,077 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:20:43,077 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:20:43,078 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 73 [2021-03-26 03:20:43,078 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:20:43,082 INFO L129 PetriNetUnfolder]: 4/30 cut-off events. [2021-03-26 03:20:43,083 INFO L130 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2021-03-26 03:20:43,083 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 30 events. 4/30 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 0 based on Foata normal form. 3/30 useless extension candidates. Maximal degree in co-relation 62. Up to 6 conditions per place. [2021-03-26 03:20:43,083 INFO L132 encePairwiseOnDemand]: 71/73 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2021-03-26 03:20:43,083 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 19 transitions, 126 flow [2021-03-26 03:20:43,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:20:43,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:20:43,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 180 transitions. [2021-03-26 03:20:43,085 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.821917808219178 [2021-03-26 03:20:43,085 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 180 transitions. [2021-03-26 03:20:43,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 180 transitions. [2021-03-26 03:20:43,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:20:43,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 180 transitions. [2021-03-26 03:20:43,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:20:43,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:20:43,086 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:20:43,087 INFO L185 Difference]: Start difference. First operand has 35 places, 22 transitions, 136 flow. Second operand 3 states and 180 transitions. [2021-03-26 03:20:43,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 19 transitions, 126 flow [2021-03-26 03:20:43,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 19 transitions, 115 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-03-26 03:20:43,088 INFO L241 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2021-03-26 03:20:43,088 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2021-03-26 03:20:43,088 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 13 predicate places. [2021-03-26 03:20:43,088 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:20:43,089 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 0 transitions, 0 flow [2021-03-26 03:20:43,089 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 0 transitions, 0 flow [2021-03-26 03:20:43,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 03:20:43,089 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 03:20:43,089 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:20:43,089 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-26 03:20:43,089 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 03:20:43,089 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:20:43,089 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:20:43,090 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-26 03:20:43,090 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 03:20:43,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:20:43,091 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 03:20:43,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 03:20:43 BasicIcfg [2021-03-26 03:20:43,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 03:20:43,095 INFO L168 Benchmark]: Toolchain (without parser) took 2634.69 ms. Allocated memory was 255.9 MB in the beginning and 339.7 MB in the end (delta: 83.9 MB). Free memory was 232.5 MB in the beginning and 242.1 MB in the end (delta: -9.6 MB). Peak memory consumption was 73.9 MB. Max. memory is 16.0 GB. [2021-03-26 03:20:43,095 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 03:20:43,096 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.30 ms. Allocated memory was 255.9 MB in the beginning and 339.7 MB in the end (delta: 83.9 MB). Free memory was 232.5 MB in the beginning and 323.8 MB in the end (delta: -91.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-26 03:20:43,096 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.50 ms. Allocated memory is still 339.7 MB. Free memory was 323.8 MB in the beginning and 322.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 03:20:43,096 INFO L168 Benchmark]: Boogie Preprocessor took 28.41 ms. Allocated memory is still 339.7 MB. Free memory was 322.3 MB in the beginning and 321.4 MB in the end (delta: 981.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 03:20:43,097 INFO L168 Benchmark]: RCFGBuilder took 293.32 ms. Allocated memory is still 339.7 MB. Free memory was 321.4 MB in the beginning and 307.7 MB in the end (delta: 13.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-26 03:20:43,097 INFO L168 Benchmark]: TraceAbstraction took 2062.17 ms. Allocated memory is still 339.7 MB. Free memory was 307.0 MB in the beginning and 242.1 MB in the end (delta: 64.9 MB). Peak memory consumption was 67.4 MB. Max. memory is 16.0 GB. [2021-03-26 03:20:43,099 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 211.30 ms. Allocated memory was 255.9 MB in the beginning and 339.7 MB in the end (delta: 83.9 MB). Free memory was 232.5 MB in the beginning and 323.8 MB in the end (delta: -91.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 31.50 ms. Allocated memory is still 339.7 MB. Free memory was 323.8 MB in the beginning and 322.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.41 ms. Allocated memory is still 339.7 MB. Free memory was 322.3 MB in the beginning and 321.4 MB in the end (delta: 981.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 293.32 ms. Allocated memory is still 339.7 MB. Free memory was 321.4 MB in the beginning and 307.7 MB in the end (delta: 13.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2062.17 ms. Allocated memory is still 339.7 MB. Free memory was 307.0 MB in the beginning and 242.1 MB in the end (delta: 64.9 MB). Peak memory consumption was 67.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1003.9ms, 38 PlacesBefore, 19 PlacesAfterwards, 34 TransitionsBefore, 15 TransitionsAfterwards, 100 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 19 TotalNumberOfCompositions, 45 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 45, positive: 45, positive conditional: 45, 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: 45, positive: 45, positive conditional: 0, positive unconditional: 45, 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: 45, positive: 45, positive conditional: 0, positive unconditional: 45, 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: 45, positive: 45, positive conditional: 0, positive unconditional: 45, 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: 45, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 45, unknown conditional: 45, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 47.8ms, 23 PlacesBefore, 22 PlacesAfterwards, 19 TransitionsBefore, 18 TransitionsAfterwards, 22 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 1 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 1, 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: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.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: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.5ms, 30 PlacesBefore, 30 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 16 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.2ms, 35 PlacesBefore, 35 PlacesAfterwards, 22 TransitionsBefore, 22 TransitionsAfterwards, 10 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.7ms, 32 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 35]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1906.8ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 360.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1116.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 27 SDtfs, 51 SDslu, 21 SDs, 0 SdLazy, 110 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 97.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 139.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=136occurred in iteration=3, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.2ms SsaConstructionTime, 40.3ms SatisfiabilityAnalysisTime, 194.3ms InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 142 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...