/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/11c-double-end.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 07:39:36,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 07:39:36,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 07:39:36,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 07:39:36,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 07:39:36,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 07:39:36,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 07:39:36,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 07:39:36,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 07:39:36,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 07:39:36,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 07:39:36,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 07:39:36,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 07:39:36,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 07:39:36,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 07:39:36,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 07:39:36,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 07:39:36,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 07:39:36,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 07:39:36,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 07:39:36,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 07:39:36,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 07:39:36,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 07:39:36,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 07:39:36,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 07:39:36,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 07:39:36,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 07:39:36,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 07:39:36,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 07:39:36,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 07:39:36,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 07:39:36,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 07:39:36,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 07:39:36,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 07:39:36,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 07:39:36,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 07:39:36,669 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 07:39:36,703 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 07:39:36,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 07:39:36,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 07:39:36,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 07:39:36,707 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 07:39:36,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 07:39:36,707 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 07:39:36,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 07:39:36,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 07:39:36,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 07:39:36,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 07:39:36,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 07:39:36,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 07:39:36,709 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 07:39:36,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 07:39:36,709 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 07:39:36,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 07:39:36,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 07:39:36,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 07:39:36,710 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 07:39:36,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 07:39:36,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 07:39:36,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 07:39:36,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 07:39:36,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 07:39:36,711 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 07:39:36,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 07:39:36,711 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 07:39:36,712 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 07:39:36,712 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 07:39:36,712 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 07:39:37,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 07:39:37,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 07:39:37,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 07:39:37,035 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 07:39:37,035 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 07:39:37,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/11c-double-end.c [2021-03-25 07:39:37,093 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3265b07dd/6c6cc47870a14b06a7accef4085fa80a/FLAG82d578f95 [2021-03-25 07:39:37,449 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 07:39:37,449 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/11c-double-end.c [2021-03-25 07:39:37,450 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-25 07:39:37,477 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3265b07dd/6c6cc47870a14b06a7accef4085fa80a/FLAG82d578f95 [2021-03-25 07:39:37,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3265b07dd/6c6cc47870a14b06a7accef4085fa80a [2021-03-25 07:39:37,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 07:39:37,887 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 07:39:37,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 07:39:37,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 07:39:37,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 07:39:37,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 07:39:37" (1/1) ... [2021-03-25 07:39:37,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7297a8cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:37, skipping insertion in model container [2021-03-25 07:39:37,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 07:39:37" (1/1) ... [2021-03-25 07:39:37,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 07:39:37,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 07:39:38,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 07:39:38,067 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 07:39:38,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 07:39:38,089 INFO L208 MainTranslator]: Completed translation [2021-03-25 07:39:38,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:38 WrapperNode [2021-03-25 07:39:38,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 07:39:38,091 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 07:39:38,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 07:39:38,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 07:39:38,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:38" (1/1) ... [2021-03-25 07:39:38,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:38" (1/1) ... [2021-03-25 07:39:38,117 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 07:39:38,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 07:39:38,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 07:39:38,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 07:39:38,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:38" (1/1) ... [2021-03-25 07:39:38,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:38" (1/1) ... [2021-03-25 07:39:38,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:38" (1/1) ... [2021-03-25 07:39:38,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:38" (1/1) ... [2021-03-25 07:39:38,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:38" (1/1) ... [2021-03-25 07:39:38,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:38" (1/1) ... [2021-03-25 07:39:38,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:38" (1/1) ... [2021-03-25 07:39:38,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 07:39:38,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 07:39:38,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 07:39:38,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 07:39:38,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:38" (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 07:39:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 07:39:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 07:39:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 07:39:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-03-25 07:39:38,200 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-03-25 07:39:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 07:39:38,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 07:39:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 07:39:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 07:39:38,201 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 07:39:38,369 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 07:39:38,369 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-25 07:39:38,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:39:38 BoogieIcfgContainer [2021-03-25 07:39:38,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 07:39:38,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 07:39:38,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 07:39:38,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 07:39:38,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 07:39:37" (1/3) ... [2021-03-25 07:39:38,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f721218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 07:39:38, skipping insertion in model container [2021-03-25 07:39:38,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:38" (2/3) ... [2021-03-25 07:39:38,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f721218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 07:39:38, skipping insertion in model container [2021-03-25 07:39:38,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:39:38" (3/3) ... [2021-03-25 07:39:38,389 INFO L111 eAbstractionObserver]: Analyzing ICFG 11c-double-end.c [2021-03-25 07:39:38,394 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 07:39:38,397 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 07:39:38,397 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 07:39:38,411 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:38,411 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:38,411 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:38,412 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:38,412 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:38,412 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:38,412 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:38,412 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:38,413 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:38,413 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:38,413 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:38,413 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:38,414 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:38,415 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:38,415 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:38,415 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:38,426 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 07:39:38,455 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-25 07:39:38,487 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 07:39:38,488 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 07:39:38,488 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 07:39:38,488 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 07:39:38,488 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 07:39:38,488 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 07:39:38,488 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 07:39:38,488 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 07:39:38,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 22 transitions, 49 flow [2021-03-25 07:39:38,528 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-25 07:39:38,528 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:39:38,530 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 21 events. 0/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-25 07:39:38,531 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 22 transitions, 49 flow [2021-03-25 07:39:38,535 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 16 transitions, 35 flow [2021-03-25 07:39:38,536 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:39:38,543 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 20 places, 16 transitions, 35 flow [2021-03-25 07:39:38,547 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 20 places, 16 transitions, 35 flow [2021-03-25 07:39:38,549 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 16 transitions, 35 flow [2021-03-25 07:39:38,560 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-25 07:39:38,560 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:39:38,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 16 events. 0/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-25 07:39:38,563 INFO L142 LiptonReduction]: Number of co-enabled transitions 24 [2021-03-25 07:39:39,062 INFO L154 LiptonReduction]: Checked pairs total: 24 [2021-03-25 07:39:39,062 INFO L156 LiptonReduction]: Total number of compositions: 11 [2021-03-25 07:39:39,064 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 529 [2021-03-25 07:39:39,071 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2021-03-25 07:39:39,071 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:39:39,071 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:39:39,072 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-03-25 07:39:39,072 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:39:39,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:39:39,078 INFO L82 PathProgramCache]: Analyzing trace with hash 2821246, now seen corresponding path program 1 times [2021-03-25 07:39:39,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:39:39,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658348730] [2021-03-25 07:39:39,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:39:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:39:39,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:39:39,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:39:39,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:39:39,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:39:39,189 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 07:39:39,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658348730] [2021-03-25 07:39:39,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:39:39,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 07:39:39,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684510053] [2021-03-25 07:39:39,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 07:39:39,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:39:39,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 07:39:39,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 07:39:39,208 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 33 [2021-03-25 07:39:39,209 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 9 places, 5 transitions, 13 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 07:39:39,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:39:39,209 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 33 [2021-03-25 07:39:39,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:39:39,239 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-25 07:39:39,239 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:39:39,239 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 7 events. 0/7 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 2/9 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-25 07:39:39,240 INFO L132 encePairwiseOnDemand]: 30/33 looper letters, 2 selfloop transitions, 2 changer transitions 1/6 dead transitions. [2021-03-25 07:39:39,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 6 transitions, 25 flow [2021-03-25 07:39:39,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 07:39:39,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 07:39:39,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2021-03-25 07:39:39,248 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.696969696969697 [2021-03-25 07:39:39,249 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 69 transitions. [2021-03-25 07:39:39,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 69 transitions. [2021-03-25 07:39:39,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:39:39,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 69 transitions. [2021-03-25 07:39:39,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 07:39:39,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 07:39:39,256 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 07:39:39,257 INFO L185 Difference]: Start difference. First operand has 9 places, 5 transitions, 13 flow. Second operand 3 states and 69 transitions. [2021-03-25 07:39:39,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 6 transitions, 25 flow [2021-03-25 07:39:39,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 24 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 07:39:39,260 INFO L241 Difference]: Finished difference. Result has 11 places, 5 transitions, 20 flow [2021-03-25 07:39:39,261 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=12, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=20, PETRI_PLACES=11, PETRI_TRANSITIONS=5} [2021-03-25 07:39:39,262 INFO L343 CegarLoopForPetriNet]: 9 programPoint places, 2 predicate places. [2021-03-25 07:39:39,262 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:39:39,262 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 11 places, 5 transitions, 20 flow [2021-03-25 07:39:39,262 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 11 places, 5 transitions, 20 flow [2021-03-25 07:39:39,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 11 places, 5 transitions, 20 flow [2021-03-25 07:39:39,264 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-03-25 07:39:39,264 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 07:39:39,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14 conditions, 5 events. 0/5 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. 0/5 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 07:39:39,265 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 07:39:39,265 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:39:39,265 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:39:39,265 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3 [2021-03-25 07:39:39,266 INFO L480 AbstractCegarLoop]: Abstraction has has 11 places, 5 transitions, 20 flow [2021-03-25 07:39:39,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 07:39:39,267 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:39:39,267 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-25 07:39:39,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 07:39:39,267 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:39:39,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:39:39,268 INFO L82 PathProgramCache]: Analyzing trace with hash 87459616, now seen corresponding path program 1 times [2021-03-25 07:39:39,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:39:39,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351686867] [2021-03-25 07:39:39,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:39:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:39:39,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:39:39,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:39:39,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:39:39,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:39:39,291 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 07:39:39,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351686867] [2021-03-25 07:39:39,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:39:39,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 07:39:39,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77000742] [2021-03-25 07:39:39,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 07:39:39,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:39:39,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 07:39:39,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 07:39:39,294 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 33 [2021-03-25 07:39:39,294 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 5 transitions, 20 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 07:39:39,294 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:39:39,294 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 33 [2021-03-25 07:39:39,295 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:39:39,298 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2021-03-25 07:39:39,298 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 07:39:39,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16 conditions, 4 events. 0/4 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. 1/5 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 07:39:39,298 INFO L132 encePairwiseOnDemand]: 31/33 looper letters, 0 selfloop transitions, 0 changer transitions 4/4 dead transitions. [2021-03-25 07:39:39,298 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 4 transitions, 22 flow [2021-03-25 07:39:39,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 07:39:39,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 07:39:39,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2021-03-25 07:39:39,300 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6767676767676768 [2021-03-25 07:39:39,300 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 67 transitions. [2021-03-25 07:39:39,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 67 transitions. [2021-03-25 07:39:39,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:39:39,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 67 transitions. [2021-03-25 07:39:39,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 07:39:39,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 07:39:39,302 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 07:39:39,302 INFO L185 Difference]: Start difference. First operand has 11 places, 5 transitions, 20 flow. Second operand 3 states and 67 transitions. [2021-03-25 07:39:39,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 4 transitions, 22 flow [2021-03-25 07:39:39,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 9 places, 4 transitions, 16 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 07:39:39,303 INFO L241 Difference]: Finished difference. Result has 9 places, 0 transitions, 0 flow [2021-03-25 07:39:39,303 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=10, PETRI_DIFFERENCE_MINUEND_PLACES=7, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=9, PETRI_TRANSITIONS=0} [2021-03-25 07:39:39,303 INFO L343 CegarLoopForPetriNet]: 9 programPoint places, 0 predicate places. [2021-03-25 07:39:39,303 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:39:39,304 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 9 places, 0 transitions, 0 flow [2021-03-25 07:39:39,304 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 9 places, 0 transitions, 0 flow [2021-03-25 07:39:39,304 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 07:39:39,304 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 07:39:39,304 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:39:39,304 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 07:39:39,304 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 07:39:39,305 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:39:39,305 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:39:39,305 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-25 07:39:39,305 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 07:39:39,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 07:39:39,306 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 07:39:39,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 07:39:39 BasicIcfg [2021-03-25 07:39:39,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 07:39:39,310 INFO L168 Benchmark]: Toolchain (without parser) took 1422.78 ms. Allocated memory was 255.9 MB in the beginning and 371.2 MB in the end (delta: 115.3 MB). Free memory was 233.2 MB in the beginning and 343.1 MB in the end (delta: -109.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.0 GB. [2021-03-25 07:39:39,310 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:39:39,311 INFO L168 Benchmark]: CACSL2BoogieTranslator took 201.73 ms. Allocated memory was 255.9 MB in the beginning and 371.2 MB in the end (delta: 115.3 MB). Free memory was 233.2 MB in the beginning and 354.4 MB in the end (delta: -121.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-25 07:39:39,311 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.36 ms. Allocated memory is still 371.2 MB. Free memory was 354.4 MB in the beginning and 353.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:39:39,312 INFO L168 Benchmark]: Boogie Preprocessor took 18.02 ms. Allocated memory is still 371.2 MB. Free memory was 353.0 MB in the beginning and 352.3 MB in the end (delta: 725.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 07:39:39,312 INFO L168 Benchmark]: RCFGBuilder took 232.70 ms. Allocated memory is still 371.2 MB. Free memory was 352.3 MB in the beginning and 340.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-25 07:39:39,313 INFO L168 Benchmark]: TraceAbstraction took 937.13 ms. Allocated memory is still 371.2 MB. Free memory was 340.4 MB in the beginning and 343.1 MB in the end (delta: -2.7 MB). Peak memory consumption was 198.5 kB. Max. memory is 16.0 GB. [2021-03-25 07:39:39,315 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 201.73 ms. Allocated memory was 255.9 MB in the beginning and 371.2 MB in the end (delta: 115.3 MB). Free memory was 233.2 MB in the beginning and 354.4 MB in the end (delta: -121.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.36 ms. Allocated memory is still 371.2 MB. Free memory was 354.4 MB in the beginning and 353.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.02 ms. Allocated memory is still 371.2 MB. Free memory was 353.0 MB in the beginning and 352.3 MB in the end (delta: 725.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 232.70 ms. Allocated memory is still 371.2 MB. Free memory was 352.3 MB in the beginning and 340.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 937.13 ms. Allocated memory is still 371.2 MB. Free memory was 340.4 MB in the beginning and 343.1 MB in the end (delta: -2.7 MB). Peak memory consumption was 198.5 kB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 515.0ms, 20 PlacesBefore, 9 PlacesAfterwards, 16 TransitionsBefore, 5 TransitionsAfterwards, 24 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 11 TotalNumberOfCompositions, 24 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 21, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 14, positive: 10, positive conditional: 0, positive unconditional: 10, 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: 14, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 21, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 14, unknown conditional: 0, unknown unconditional: 14] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0ms, 11 PlacesBefore, 11 PlacesAfterwards, 5 TransitionsBefore, 5 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): 2, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - 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): 2, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - PositiveResult [Line: 32]: 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: 2.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 825.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 68.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 580.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 8 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 6 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=1, InterpolantAutomatonStates: 6, 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: 3.9ms SsaConstructionTime, 19.7ms SatisfiabilityAnalysisTime, 48.1ms InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...