/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/17-pthread_exit.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 07:39:48,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 07:39:48,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 07:39:48,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 07:39:48,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 07:39:48,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 07:39:48,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 07:39:48,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 07:39:48,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 07:39:48,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 07:39:48,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 07:39:48,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 07:39:48,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 07:39:48,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 07:39:48,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 07:39:48,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 07:39:48,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 07:39:48,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 07:39:48,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 07:39:48,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 07:39:48,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 07:39:48,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 07:39:48,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 07:39:48,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 07:39:48,354 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 07:39:48,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 07:39:48,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 07:39:48,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 07:39:48,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 07:39:48,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 07:39:48,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 07:39:48,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 07:39:48,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 07:39:48,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 07:39:48,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 07:39:48,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 07:39:48,364 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-RepeatedVariableLbe.epf [2021-03-25 07:39:48,383 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 07:39:48,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 07:39:48,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 07:39:48,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 07:39:48,385 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 07:39:48,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 07:39:48,386 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 07:39:48,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 07:39:48,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 07:39:48,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 07:39:48,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 07:39:48,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 07:39:48,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 07:39:48,387 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 07:39:48,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 07:39:48,387 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 07:39:48,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 07:39:48,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 07:39:48,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 07:39:48,387 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 07:39:48,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 07:39:48,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 07:39:48,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 07:39:48,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 07:39:48,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 07:39:48,388 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 07:39:48,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 07:39:48,389 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 07:39:48,389 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 07:39:48,389 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 07:39:48,389 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 07:39:48,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 07:39:48,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 07:39:48,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 07:39:48,679 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 07:39:48,680 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 07:39:48,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/17-pthread_exit.c [2021-03-25 07:39:48,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44397ea56/caab4e05585b40009acec4d938200b5a/FLAG13d673cc2 [2021-03-25 07:39:49,204 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 07:39:49,204 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/17-pthread_exit.c [2021-03-25 07:39:49,204 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-25 07:39:49,232 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44397ea56/caab4e05585b40009acec4d938200b5a/FLAG13d673cc2 [2021-03-25 07:39:49,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44397ea56/caab4e05585b40009acec4d938200b5a [2021-03-25 07:39:49,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 07:39:49,607 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 07:39:49,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 07:39:49,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 07:39:49,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 07:39:49,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 07:39:49" (1/1) ... [2021-03-25 07:39:49,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@684b4c6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:49, skipping insertion in model container [2021-03-25 07:39:49,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 07:39:49" (1/1) ... [2021-03-25 07:39:49,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 07:39:49,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 07:39:49,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 07:39:49,774 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 07:39:49,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 07:39:49,791 INFO L208 MainTranslator]: Completed translation [2021-03-25 07:39:49,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:49 WrapperNode [2021-03-25 07:39:49,791 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 07:39:49,792 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 07:39:49,793 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 07:39:49,793 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 07:39:49,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:49" (1/1) ... [2021-03-25 07:39:49,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:49" (1/1) ... [2021-03-25 07:39:49,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 07:39:49,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 07:39:49,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 07:39:49,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 07:39:49,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:49" (1/1) ... [2021-03-25 07:39:49,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:49" (1/1) ... [2021-03-25 07:39:49,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:49" (1/1) ... [2021-03-25 07:39:49,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:49" (1/1) ... [2021-03-25 07:39:49,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:49" (1/1) ... [2021-03-25 07:39:49,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:49" (1/1) ... [2021-03-25 07:39:49,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:49" (1/1) ... [2021-03-25 07:39:49,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 07:39:49,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 07:39:49,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 07:39:49,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 07:39:49,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:49" (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 [2021-03-25 07:39:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 07:39:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 07:39:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 07:39:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-03-25 07:39:49,887 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-03-25 07:39:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 07:39:49,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 07:39:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 07:39:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 07:39:49,888 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 07:39:50,117 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 07:39:50,118 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-25 07:39:50,118 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: fooEXIT is neither atomic block end nor error location. [2021-03-25 07:39:50,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:39:50 BoogieIcfgContainer [2021-03-25 07:39:50,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 07:39:50,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 07:39:50,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 07:39:50,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 07:39:50,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 07:39:49" (1/3) ... [2021-03-25 07:39:50,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34149f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 07:39:50, skipping insertion in model container [2021-03-25 07:39:50,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:49" (2/3) ... [2021-03-25 07:39:50,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34149f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 07:39:50, skipping insertion in model container [2021-03-25 07:39:50,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:39:50" (3/3) ... [2021-03-25 07:39:50,126 INFO L111 eAbstractionObserver]: Analyzing ICFG 17-pthread_exit.c [2021-03-25 07:39:50,131 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 07:39:50,133 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 07:39:50,134 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 07:39:50,149 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:50,149 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:50,149 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:50,149 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:50,150 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:50,150 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:50,150 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:50,150 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:50,150 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:50,150 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:50,151 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:50,151 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:50,151 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:50,151 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:50,151 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:50,151 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:50,153 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:50,153 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:50,153 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:50,153 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:50,156 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 07:39:50,171 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-25 07:39:50,201 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 07:39:50,201 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 07:39:50,201 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 07:39:50,201 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 07:39:50,201 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 07:39:50,202 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 07:39:50,202 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 07:39:50,202 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 07:39:50,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 23 transitions, 51 flow [2021-03-25 07:39:50,243 INFO L129 PetriNetUnfolder]: 1/22 cut-off events. [2021-03-25 07:39:50,243 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:39:50,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 22 events. 1/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 11 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 12. Up to 2 conditions per place. [2021-03-25 07:39:50,245 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 23 transitions, 51 flow [2021-03-25 07:39:50,253 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 22 transitions, 47 flow [2021-03-25 07:39:50,260 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:39:50,267 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 22 transitions, 47 flow [2021-03-25 07:39:50,272 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 22 transitions, 47 flow [2021-03-25 07:39:50,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 25 places, 22 transitions, 47 flow [2021-03-25 07:39:50,285 INFO L129 PetriNetUnfolder]: 1/22 cut-off events. [2021-03-25 07:39:50,285 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:39:50,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 22 events. 1/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 12. Up to 2 conditions per place. [2021-03-25 07:39:50,288 INFO L142 LiptonReduction]: Number of co-enabled transitions 64 [2021-03-25 07:39:50,659 INFO L154 LiptonReduction]: Checked pairs total: 40 [2021-03-25 07:39:50,659 INFO L156 LiptonReduction]: Total number of compositions: 12 [2021-03-25 07:39:50,661 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 407 [2021-03-25 07:39:50,667 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-25 07:39:50,667 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:39:50,667 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:39:50,668 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-25 07:39:50,668 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:39:50,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:39:50,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1420550677, now seen corresponding path program 1 times [2021-03-25 07:39:50,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:39:50,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224180577] [2021-03-25 07:39:50,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:39:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:39:50,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:39:50,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:39:50,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:39:50,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:39:50,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:39:50,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 07:39:50,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:39:50,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224180577] [2021-03-25 07:39:50,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:39:50,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 07:39:50,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594306478] [2021-03-25 07:39:50,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 07:39:50,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:39:50,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 07:39:50,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 07:39:50,860 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 35 [2021-03-25 07:39:50,862 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 10 transitions, 23 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2021-03-25 07:39:50,862 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:39:50,862 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 35 [2021-03-25 07:39:50,863 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:39:50,882 INFO L129 PetriNetUnfolder]: 2/14 cut-off events. [2021-03-25 07:39:50,882 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:39:50,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 14 events. 2/14 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 18. Up to 7 conditions per place. [2021-03-25 07:39:50,884 INFO L132 encePairwiseOnDemand]: 31/35 looper letters, 2 selfloop transitions, 4 changer transitions 3/13 dead transitions. [2021-03-25 07:39:50,884 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 13 transitions, 45 flow [2021-03-25 07:39:50,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 07:39:50,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 07:39:50,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2021-03-25 07:39:50,893 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6928571428571428 [2021-03-25 07:39:50,894 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 97 transitions. [2021-03-25 07:39:50,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 97 transitions. [2021-03-25 07:39:50,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:39:50,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 97 transitions. [2021-03-25 07:39:50,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2021-03-25 07:39:50,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 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) [2021-03-25 07:39:50,901 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 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) [2021-03-25 07:39:50,903 INFO L185 Difference]: Start difference. First operand has 14 places, 10 transitions, 23 flow. Second operand 4 states and 97 transitions. [2021-03-25 07:39:50,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 13 transitions, 45 flow [2021-03-25 07:39:50,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 13 transitions, 44 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 07:39:50,906 INFO L241 Difference]: Finished difference. Result has 18 places, 10 transitions, 39 flow [2021-03-25 07:39:50,908 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=39, PETRI_PLACES=18, PETRI_TRANSITIONS=10} [2021-03-25 07:39:50,908 INFO L343 CegarLoopForPetriNet]: 14 programPoint places, 4 predicate places. [2021-03-25 07:39:50,909 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:39:50,909 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 18 places, 10 transitions, 39 flow [2021-03-25 07:39:50,909 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 18 places, 10 transitions, 39 flow [2021-03-25 07:39:50,910 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 16 places, 10 transitions, 39 flow [2021-03-25 07:39:50,912 INFO L129 PetriNetUnfolder]: 1/10 cut-off events. [2021-03-25 07:39:50,912 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 07:39:50,912 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 10 events. 1/10 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 14. Up to 4 conditions per place. [2021-03-25 07:39:50,913 INFO L142 LiptonReduction]: Number of co-enabled transitions 2 [2021-03-25 07:39:51,331 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-25 07:39:51,332 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 07:39:51,332 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 423 [2021-03-25 07:39:51,333 INFO L480 AbstractCegarLoop]: Abstraction has has 13 places, 7 transitions, 35 flow [2021-03-25 07:39:51,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2021-03-25 07:39:51,333 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:39:51,333 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:39:51,333 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 07:39:51,334 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:39:51,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:39:51,334 INFO L82 PathProgramCache]: Analyzing trace with hash 650058709, now seen corresponding path program 1 times [2021-03-25 07:39:51,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:39:51,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145562590] [2021-03-25 07:39:51,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:39:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:39:51,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:39:51,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:39:51,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:39:51,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:39:51,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:39:51,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 07:39:51,372 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 07:39:51,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 07:39:51,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:39:51,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145562590] [2021-03-25 07:39:51,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:39:51,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 07:39:51,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89170402] [2021-03-25 07:39:51,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 07:39:51,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:39:51,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 07:39:51,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-25 07:39:51,382 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2021-03-25 07:39:51,383 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 7 transitions, 35 flow. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 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) [2021-03-25 07:39:51,383 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:39:51,383 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2021-03-25 07:39:51,383 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:39:51,394 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-25 07:39:51,395 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-25 07:39:51,395 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 6 events. 0/6 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 1/7 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-25 07:39:51,395 INFO L132 encePairwiseOnDemand]: 35/40 looper letters, 1 selfloop transitions, 2 changer transitions 2/6 dead transitions. [2021-03-25 07:39:51,395 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 6 transitions, 41 flow [2021-03-25 07:39:51,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 07:39:51,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 07:39:51,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2021-03-25 07:39:51,397 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.58 [2021-03-25 07:39:51,397 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 116 transitions. [2021-03-25 07:39:51,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 116 transitions. [2021-03-25 07:39:51,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:39:51,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 116 transitions. [2021-03-25 07:39:51,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) [2021-03-25 07:39:51,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:39:51,399 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:39:51,399 INFO L185 Difference]: Start difference. First operand has 13 places, 7 transitions, 35 flow. Second operand 5 states and 116 transitions. [2021-03-25 07:39:51,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 6 transitions, 41 flow [2021-03-25 07:39:51,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 6 transitions, 34 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 07:39:51,400 INFO L241 Difference]: Finished difference. Result has 15 places, 4 transitions, 20 flow [2021-03-25 07:39:51,401 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=20, PETRI_PLACES=15, PETRI_TRANSITIONS=4} [2021-03-25 07:39:51,401 INFO L343 CegarLoopForPetriNet]: 14 programPoint places, 1 predicate places. [2021-03-25 07:39:51,401 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:39:51,401 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 15 places, 4 transitions, 20 flow [2021-03-25 07:39:51,402 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 15 places, 4 transitions, 20 flow [2021-03-25 07:39:51,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 11 places, 4 transitions, 20 flow [2021-03-25 07:39:51,403 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2021-03-25 07:39:51,403 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 07:39:51,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14 conditions, 4 events. 0/4 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/4 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 07:39:51,404 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 07:39:51,404 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:39:51,404 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:39:51,404 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3 [2021-03-25 07:39:51,405 INFO L480 AbstractCegarLoop]: Abstraction has has 11 places, 4 transitions, 20 flow [2021-03-25 07:39:51,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 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) [2021-03-25 07:39:51,405 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:39:51,405 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-03-25 07:39:51,405 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 07:39:51,405 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:39:51,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:39:51,406 INFO L82 PathProgramCache]: Analyzing trace with hash 3339055, now seen corresponding path program 1 times [2021-03-25 07:39:51,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:39:51,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879702363] [2021-03-25 07:39:51,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:39:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:39:51,425 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 07:39:51,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 07:39:51,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:39:51,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:39:51,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:39:51,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879702363] [2021-03-25 07:39:51,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:39:51,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 07:39:51,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874571455] [2021-03-25 07:39:51,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 07:39:51,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:39:51,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 07:39:51,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 07:39:51,436 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2021-03-25 07:39:51,437 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 4 transitions, 20 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2021-03-25 07:39:51,437 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:39:51,437 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2021-03-25 07:39:51,437 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:39:51,441 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2021-03-25 07:39:51,441 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 07:39:51,441 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15 conditions, 3 events. 0/3 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/4 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 07:39:51,441 INFO L132 encePairwiseOnDemand]: 37/40 looper letters, 0 selfloop transitions, 0 changer transitions 3/3 dead transitions. [2021-03-25 07:39:51,442 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 3 transitions, 20 flow [2021-03-25 07:39:51,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 07:39:51,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 07:39:51,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2021-03-25 07:39:51,443 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.56875 [2021-03-25 07:39:51,443 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 91 transitions. [2021-03-25 07:39:51,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 91 transitions. [2021-03-25 07:39:51,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:39:51,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 91 transitions. [2021-03-25 07:39:51,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2021-03-25 07:39:51,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 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) [2021-03-25 07:39:51,445 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 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) [2021-03-25 07:39:51,445 INFO L185 Difference]: Start difference. First operand has 11 places, 4 transitions, 20 flow. Second operand 4 states and 91 transitions. [2021-03-25 07:39:51,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 3 transitions, 20 flow [2021-03-25 07:39:51,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 9 places, 3 transitions, 12 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 07:39:51,445 INFO L241 Difference]: Finished difference. Result has 9 places, 0 transitions, 0 flow [2021-03-25 07:39:51,445 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8, PETRI_DIFFERENCE_MINUEND_PLACES=6, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=9, PETRI_TRANSITIONS=0} [2021-03-25 07:39:51,446 INFO L343 CegarLoopForPetriNet]: 14 programPoint places, -5 predicate places. [2021-03-25 07:39:51,446 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:39:51,446 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 9 places, 0 transitions, 0 flow [2021-03-25 07:39:51,446 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 9 places, 0 transitions, 0 flow [2021-03-25 07:39:51,446 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 07:39:51,446 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 07:39:51,447 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:39:51,447 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. [2021-03-25 07:39:51,447 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 07:39:51,447 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:39:51,447 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:39:51,447 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 07:39:51,448 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 07:39:51,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2021-03-25 07:39:51,448 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 07:39:51,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 07:39:51 BasicIcfg [2021-03-25 07:39:51,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 07:39:51,452 INFO L168 Benchmark]: Toolchain (without parser) took 1845.13 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 294.6 MB in the end (delta: -62.1 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.0 GB. [2021-03-25 07:39:51,453 INFO L168 Benchmark]: CDTParser took 0.52 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. [2021-03-25 07:39:51,453 INFO L168 Benchmark]: CACSL2BoogieTranslator took 181.62 ms. Allocated memory was 255.9 MB in the beginning and 339.7 MB in the end (delta: 83.9 MB). Free memory was 231.9 MB in the beginning and 323.1 MB in the end (delta: -91.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-25 07:39:51,453 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.38 ms. Allocated memory is still 339.7 MB. Free memory was 323.1 MB in the beginning and 321.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:39:51,454 INFO L168 Benchmark]: Boogie Preprocessor took 11.67 ms. Allocated memory is still 339.7 MB. Free memory was 321.7 MB in the beginning and 320.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 07:39:51,454 INFO L168 Benchmark]: RCFGBuilder took 292.10 ms. Allocated memory is still 339.7 MB. Free memory was 320.1 MB in the beginning and 307.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-25 07:39:51,455 INFO L168 Benchmark]: TraceAbstraction took 1330.35 ms. Allocated memory is still 339.7 MB. Free memory was 306.3 MB in the beginning and 294.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.0 GB. [2021-03-25 07:39:51,457 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 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 181.62 ms. Allocated memory was 255.9 MB in the beginning and 339.7 MB in the end (delta: 83.9 MB). Free memory was 231.9 MB in the beginning and 323.1 MB in the end (delta: -91.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.38 ms. Allocated memory is still 339.7 MB. Free memory was 323.1 MB in the beginning and 321.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 11.67 ms. Allocated memory is still 339.7 MB. Free memory was 321.7 MB in the beginning and 320.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 292.10 ms. Allocated memory is still 339.7 MB. Free memory was 320.1 MB in the beginning and 307.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1330.35 ms. Allocated memory is still 339.7 MB. Free memory was 306.3 MB in the beginning and 294.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 387.4ms, 25 PlacesBefore, 14 PlacesAfterwards, 22 TransitionsBefore, 10 TransitionsAfterwards, 64 CoEnabledTransitionPairs, 3 FixpointIterations, 6 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 12 TotalNumberOfCompositions, 40 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 33, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 26, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 26, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 33, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 26, unknown conditional: 0, unknown unconditional: 26] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 422.7ms, 18 PlacesBefore, 13 PlacesAfterwards, 10 TransitionsBefore, 7 TransitionsAfterwards, 2 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, 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: 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] , Cache Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, 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: 2.3ms, 15 PlacesBefore, 11 PlacesAfterwards, 4 TransitionsBefore, 4 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: 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] , 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: 0.8ms, 9 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: 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] , 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 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1251.6ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 83.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 462.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 7 SDtfs, 4 SDslu, 1 SDs, 0 SdLazy, 19 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 29.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=1, InterpolantAutomatonStates: 13, 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: 5.5ms SsaConstructionTime, 28.6ms SatisfiabilityAnalysisTime, 107.5ms InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 61 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...