/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/ThreadIdTest2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 22:08:57,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 22:08:57,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 22:08:57,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 22:08:57,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 22:08:57,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 22:08:57,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 22:08:57,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 22:08:57,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 22:08:57,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 22:08:57,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 22:08:57,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 22:08:57,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 22:08:57,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 22:08:57,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 22:08:57,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 22:08:57,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 22:08:57,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 22:08:57,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 22:08:57,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 22:08:57,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 22:08:57,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 22:08:57,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 22:08:57,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 22:08:57,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 22:08:57,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 22:08:57,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 22:08:57,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 22:08:57,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 22:08:57,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 22:08:57,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 22:08:57,789 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 22:08:57,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 22:08:57,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 22:08:57,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 22:08:57,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 22:08:57,794 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-24 22:08:57,815 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 22:08:57,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 22:08:57,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 22:08:57,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 22:08:57,819 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 22:08:57,819 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 22:08:57,819 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 22:08:57,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 22:08:57,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 22:08:57,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 22:08:57,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 22:08:57,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 22:08:57,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 22:08:57,820 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 22:08:57,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 22:08:57,820 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 22:08:57,820 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 22:08:57,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 22:08:57,821 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 22:08:57,821 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 22:08:57,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 22:08:57,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 22:08:57,821 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 22:08:57,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 22:08:57,821 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 22:08:57,821 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 22:08:57,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 22:08:57,822 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 22:08:57,822 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 22:08:58,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 22:08:58,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 22:08:58,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 22:08:58,036 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 22:08:58,037 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 22:08:58,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/ThreadIdTest2.c [2021-03-24 22:08:58,083 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ca3cf30f/310746f1b99f4fad8ab43b1fe25c2ce6/FLAG4d13b28aa [2021-03-24 22:08:58,397 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 22:08:58,399 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/ThreadIdTest2.c [2021-03-24 22:08:58,399 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-24 22:08:58,399 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-24 22:08:58,420 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ca3cf30f/310746f1b99f4fad8ab43b1fe25c2ce6/FLAG4d13b28aa [2021-03-24 22:08:58,823 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ca3cf30f/310746f1b99f4fad8ab43b1fe25c2ce6 [2021-03-24 22:08:58,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 22:08:58,834 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 22:08:58,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 22:08:58,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 22:08:58,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 22:08:58,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 10:08:58" (1/1) ... [2021-03-24 22:08:58,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76e73308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:08:58, skipping insertion in model container [2021-03-24 22:08:58,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 10:08:58" (1/1) ... [2021-03-24 22:08:58,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 22:08:58,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 22:08:58,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 22:08:58,925 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 22:08:58,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 22:08:58,944 INFO L208 MainTranslator]: Completed translation [2021-03-24 22:08:58,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:08:58 WrapperNode [2021-03-24 22:08:58,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 22:08:58,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 22:08:58,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 22:08:58,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 22:08:58,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:08:58" (1/1) ... [2021-03-24 22:08:58,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:08:58" (1/1) ... [2021-03-24 22:08:58,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 22:08:58,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 22:08:58,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 22:08:58,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 22:08:58,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:08:58" (1/1) ... [2021-03-24 22:08:58,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:08:58" (1/1) ... [2021-03-24 22:08:58,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:08:58" (1/1) ... [2021-03-24 22:08:58,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:08:58" (1/1) ... [2021-03-24 22:08:58,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:08:58" (1/1) ... [2021-03-24 22:08:58,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:08:58" (1/1) ... [2021-03-24 22:08:58,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:08:58" (1/1) ... [2021-03-24 22:08:58,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 22:08:58,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 22:08:58,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 22:08:58,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 22:08:58,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:08:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 22:08:59,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 22:08:59,043 INFO L130 BoogieDeclarations]: Found specification of procedure dec [2021-03-24 22:08:59,043 INFO L138 BoogieDeclarations]: Found implementation of procedure dec [2021-03-24 22:08:59,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 22:08:59,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 22:08:59,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-24 22:08:59,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 22:08:59,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 22:08:59,043 INFO L130 BoogieDeclarations]: Found specification of procedure inc [2021-03-24 22:08:59,044 INFO L138 BoogieDeclarations]: Found implementation of procedure inc [2021-03-24 22:08:59,044 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 22:08:59,216 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 22:08:59,216 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-24 22:08:59,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:08:59 BoogieIcfgContainer [2021-03-24 22:08:59,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 22:08:59,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 22:08:59,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 22:08:59,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 22:08:59,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 10:08:58" (1/3) ... [2021-03-24 22:08:59,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ea95f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:08:59, skipping insertion in model container [2021-03-24 22:08:59,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:08:58" (2/3) ... [2021-03-24 22:08:59,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ea95f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:08:59, skipping insertion in model container [2021-03-24 22:08:59,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:08:59" (3/3) ... [2021-03-24 22:08:59,222 INFO L111 eAbstractionObserver]: Analyzing ICFG ThreadIdTest2.c [2021-03-24 22:08:59,225 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 22:08:59,227 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 22:08:59,228 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 22:08:59,270 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,270 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,270 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,270 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,271 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,271 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,271 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,271 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,271 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,271 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,271 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,271 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,272 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,272 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,272 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,272 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,272 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,272 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,272 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,273 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,273 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,273 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,273 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,273 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,273 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,273 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,273 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,273 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,274 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,274 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,274 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,274 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,274 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,274 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,274 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,274 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,276 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,276 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,276 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,276 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,276 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,286 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,287 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,287 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,287 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,287 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:59,293 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-24 22:08:59,305 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-24 22:08:59,329 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 22:08:59,329 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 22:08:59,329 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 22:08:59,329 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 22:08:59,329 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 22:08:59,329 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 22:08:59,329 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 22:08:59,329 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 22:08:59,339 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 42 transitions, 100 flow [2021-03-24 22:08:59,375 INFO L129 PetriNetUnfolder]: 0/51 cut-off events. [2021-03-24 22:08:59,375 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-24 22:08:59,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 51 events. 0/51 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 22:08:59,377 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 42 transitions, 100 flow [2021-03-24 22:08:59,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 32 transitions, 76 flow [2021-03-24 22:08:59,389 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 22:08:59,399 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 32 transitions, 76 flow [2021-03-24 22:08:59,401 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 32 transitions, 76 flow [2021-03-24 22:08:59,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 32 transitions, 76 flow [2021-03-24 22:08:59,417 INFO L129 PetriNetUnfolder]: 0/35 cut-off events. [2021-03-24 22:08:59,417 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-24 22:08:59,418 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 35 events. 0/35 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 22:08:59,420 INFO L142 LiptonReduction]: Number of co-enabled transitions 252 [2021-03-24 22:08:59,820 INFO L154 LiptonReduction]: Checked pairs total: 274 [2021-03-24 22:08:59,821 INFO L156 LiptonReduction]: Total number of compositions: 16 [2021-03-24 22:08:59,822 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 434 [2021-03-24 22:08:59,831 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-24 22:08:59,831 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-24 22:08:59,832 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:08:59,832 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:08:59,832 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 22:08:59,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:08:59,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1869431398, now seen corresponding path program 1 times [2021-03-24 22:08:59,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:08:59,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687776401] [2021-03-24 22:08:59,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:08:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:08:59,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:08:59,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:08:59,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:08:59,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:08:59,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:08:59,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687776401] [2021-03-24 22:08:59,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:08:59,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 22:08:59,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757592202] [2021-03-24 22:08:59,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:08:59,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:08:59,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:08:59,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:08:59,941 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 58 [2021-03-24 22:08:59,942 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:08:59,942 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:08:59,942 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 58 [2021-03-24 22:08:59,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:08:59,963 INFO L129 PetriNetUnfolder]: 6/42 cut-off events. [2021-03-24 22:08:59,963 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-24 22:08:59,964 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 42 events. 6/42 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 106 event pairs, 4 based on Foata normal form. 6/45 useless extension candidates. Maximal degree in co-relation 53. Up to 18 conditions per place. [2021-03-24 22:08:59,964 INFO L132 encePairwiseOnDemand]: 54/58 looper letters, 8 selfloop transitions, 3 changer transitions 0/20 dead transitions. [2021-03-24 22:08:59,964 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 20 transitions, 74 flow [2021-03-24 22:08:59,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:08:59,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:08:59,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2021-03-24 22:08:59,972 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7758620689655172 [2021-03-24 22:08:59,972 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 135 transitions. [2021-03-24 22:08:59,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 135 transitions. [2021-03-24 22:08:59,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:08:59,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 135 transitions. [2021-03-24 22:08:59,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:08:59,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:08:59,978 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:08:59,979 INFO L185 Difference]: Start difference. First operand has 22 places, 16 transitions, 44 flow. Second operand 3 states and 135 transitions. [2021-03-24 22:08:59,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 20 transitions, 74 flow [2021-03-24 22:08:59,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 66 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 22:08:59,982 INFO L241 Difference]: Finished difference. Result has 21 places, 18 transitions, 55 flow [2021-03-24 22:08:59,983 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=55, PETRI_PLACES=21, PETRI_TRANSITIONS=18} [2021-03-24 22:08:59,983 INFO L343 CegarLoopForPetriNet]: 22 programPoint places, -1 predicate places. [2021-03-24 22:08:59,984 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 18 transitions, 55 flow [2021-03-24 22:08:59,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:08:59,984 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:08:59,984 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:08:59,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 22:08:59,984 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 22:08:59,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:08:59,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1799301255, now seen corresponding path program 1 times [2021-03-24 22:08:59,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:08:59,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682961838] [2021-03-24 22:08:59,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:08:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:09:00,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:09:00,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:09:00,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:09:00,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 22:09:00,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 22:09:00,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 22:09:00,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:09:00,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682961838] [2021-03-24 22:09:00,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:09:00,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:09:00,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054790446] [2021-03-24 22:09:00,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:09:00,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:09:00,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:09:00,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:09:00,034 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 58 [2021-03-24 22:09:00,034 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 18 transitions, 55 flow. Second operand has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,034 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:09:00,034 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 58 [2021-03-24 22:09:00,034 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:09:00,107 INFO L129 PetriNetUnfolder]: 16/71 cut-off events. [2021-03-24 22:09:00,107 INFO L130 PetriNetUnfolder]: For 35/38 co-relation queries the response was YES. [2021-03-24 22:09:00,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 71 events. 16/71 cut-off events. For 35/38 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 241 event pairs, 9 based on Foata normal form. 2/71 useless extension candidates. Maximal degree in co-relation 94. Up to 43 conditions per place. [2021-03-24 22:09:00,108 INFO L132 encePairwiseOnDemand]: 51/58 looper letters, 11 selfloop transitions, 7 changer transitions 9/33 dead transitions. [2021-03-24 22:09:00,108 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 33 transitions, 163 flow [2021-03-24 22:09:00,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:09:00,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:09:00,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 332 transitions. [2021-03-24 22:09:00,110 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6360153256704981 [2021-03-24 22:09:00,110 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 332 transitions. [2021-03-24 22:09:00,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 332 transitions. [2021-03-24 22:09:00,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:09:00,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 332 transitions. [2021-03-24 22:09:00,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 36.888888888888886) internal successors, (332), 9 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 58.0) internal successors, (580), 10 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,114 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 58.0) internal successors, (580), 10 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,114 INFO L185 Difference]: Start difference. First operand has 21 places, 18 transitions, 55 flow. Second operand 9 states and 332 transitions. [2021-03-24 22:09:00,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 33 transitions, 163 flow [2021-03-24 22:09:00,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:09:00,115 INFO L241 Difference]: Finished difference. Result has 35 places, 23 transitions, 117 flow [2021-03-24 22:09:00,116 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=117, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2021-03-24 22:09:00,116 INFO L343 CegarLoopForPetriNet]: 22 programPoint places, 13 predicate places. [2021-03-24 22:09:00,116 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 117 flow [2021-03-24 22:09:00,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,116 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:09:00,116 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:09:00,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 22:09:00,117 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 22:09:00,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:09:00,117 INFO L82 PathProgramCache]: Analyzing trace with hash 852521221, now seen corresponding path program 2 times [2021-03-24 22:09:00,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:09:00,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139026227] [2021-03-24 22:09:00,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:09:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:09:00,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:09:00,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:09:00,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:09:00,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 22:09:00,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:09:00,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139026227] [2021-03-24 22:09:00,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:09:00,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 22:09:00,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917688792] [2021-03-24 22:09:00,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 22:09:00,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:09:00,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 22:09:00,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 22:09:00,145 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 58 [2021-03-24 22:09:00,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:09:00,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 58 [2021-03-24 22:09:00,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:09:00,189 INFO L129 PetriNetUnfolder]: 11/59 cut-off events. [2021-03-24 22:09:00,189 INFO L130 PetriNetUnfolder]: For 113/116 co-relation queries the response was YES. [2021-03-24 22:09:00,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 59 events. 11/59 cut-off events. For 113/116 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 182 event pairs, 7 based on Foata normal form. 2/58 useless extension candidates. Maximal degree in co-relation 195. Up to 34 conditions per place. [2021-03-24 22:09:00,191 INFO L132 encePairwiseOnDemand]: 52/58 looper letters, 13 selfloop transitions, 4 changer transitions 4/28 dead transitions. [2021-03-24 22:09:00,191 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 28 transitions, 195 flow [2021-03-24 22:09:00,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 22:09:00,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 22:09:00,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 240 transitions. [2021-03-24 22:09:00,194 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6896551724137931 [2021-03-24 22:09:00,194 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 240 transitions. [2021-03-24 22:09:00,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 240 transitions. [2021-03-24 22:09:00,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:09:00,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 240 transitions. [2021-03-24 22:09:00,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 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) [2021-03-24 22:09:00,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,199 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,199 INFO L185 Difference]: Start difference. First operand has 35 places, 23 transitions, 117 flow. Second operand 6 states and 240 transitions. [2021-03-24 22:09:00,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 28 transitions, 195 flow [2021-03-24 22:09:00,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 176 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-24 22:09:00,201 INFO L241 Difference]: Finished difference. Result has 36 places, 23 transitions, 124 flow [2021-03-24 22:09:00,201 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=124, PETRI_PLACES=36, PETRI_TRANSITIONS=23} [2021-03-24 22:09:00,201 INFO L343 CegarLoopForPetriNet]: 22 programPoint places, 14 predicate places. [2021-03-24 22:09:00,201 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 23 transitions, 124 flow [2021-03-24 22:09:00,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,202 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:09:00,202 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:09:00,202 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 22:09:00,202 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 22:09:00,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:09:00,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1357176957, now seen corresponding path program 3 times [2021-03-24 22:09:00,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:09:00,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818330130] [2021-03-24 22:09:00,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:09:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:09:00,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:09:00,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:09:00,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:09:00,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 22:09:00,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:09:00,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818330130] [2021-03-24 22:09:00,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:09:00,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 22:09:00,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500198394] [2021-03-24 22:09:00,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 22:09:00,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:09:00,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 22:09:00,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 22:09:00,247 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 58 [2021-03-24 22:09:00,247 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 23 transitions, 124 flow. Second operand has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,247 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:09:00,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 58 [2021-03-24 22:09:00,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:09:00,297 INFO L129 PetriNetUnfolder]: 10/57 cut-off events. [2021-03-24 22:09:00,297 INFO L130 PetriNetUnfolder]: For 166/172 co-relation queries the response was YES. [2021-03-24 22:09:00,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 57 events. 10/57 cut-off events. For 166/172 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 173 event pairs, 9 based on Foata normal form. 2/57 useless extension candidates. Maximal degree in co-relation 196. Up to 38 conditions per place. [2021-03-24 22:09:00,298 INFO L132 encePairwiseOnDemand]: 52/58 looper letters, 10 selfloop transitions, 4 changer transitions 4/25 dead transitions. [2021-03-24 22:09:00,298 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 25 transitions, 179 flow [2021-03-24 22:09:00,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 22:09:00,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 22:09:00,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 239 transitions. [2021-03-24 22:09:00,299 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6867816091954023 [2021-03-24 22:09:00,299 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 239 transitions. [2021-03-24 22:09:00,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 239 transitions. [2021-03-24 22:09:00,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:09:00,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 239 transitions. [2021-03-24 22:09:00,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,301 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,301 INFO L185 Difference]: Start difference. First operand has 36 places, 23 transitions, 124 flow. Second operand 6 states and 239 transitions. [2021-03-24 22:09:00,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 25 transitions, 179 flow [2021-03-24 22:09:00,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 25 transitions, 161 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-03-24 22:09:00,304 INFO L241 Difference]: Finished difference. Result has 37 places, 21 transitions, 113 flow [2021-03-24 22:09:00,304 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=113, PETRI_PLACES=37, PETRI_TRANSITIONS=21} [2021-03-24 22:09:00,305 INFO L343 CegarLoopForPetriNet]: 22 programPoint places, 15 predicate places. [2021-03-24 22:09:00,305 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 21 transitions, 113 flow [2021-03-24 22:09:00,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,305 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:09:00,305 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:09:00,305 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 22:09:00,305 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 22:09:00,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:09:00,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1338728605, now seen corresponding path program 4 times [2021-03-24 22:09:00,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:09:00,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084064770] [2021-03-24 22:09:00,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:09:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:09:00,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:09:00,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:09:00,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:09:00,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 22:09:00,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 22:09:00,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 22:09:00,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:09:00,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084064770] [2021-03-24 22:09:00,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:09:00,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:09:00,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676306194] [2021-03-24 22:09:00,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:09:00,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:09:00,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:09:00,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:09:00,367 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 58 [2021-03-24 22:09:00,367 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 21 transitions, 113 flow. Second operand has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,367 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:09:00,368 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 58 [2021-03-24 22:09:00,368 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:09:00,436 INFO L129 PetriNetUnfolder]: 5/37 cut-off events. [2021-03-24 22:09:00,436 INFO L130 PetriNetUnfolder]: For 104/104 co-relation queries the response was YES. [2021-03-24 22:09:00,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 37 events. 5/37 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 70 event pairs, 0 based on Foata normal form. 2/39 useless extension candidates. Maximal degree in co-relation 132. Up to 14 conditions per place. [2021-03-24 22:09:00,436 INFO L132 encePairwiseOnDemand]: 51/58 looper letters, 14 selfloop transitions, 6 changer transitions 5/30 dead transitions. [2021-03-24 22:09:00,436 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 30 transitions, 235 flow [2021-03-24 22:09:00,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 22:09:00,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 22:09:00,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 296 transitions. [2021-03-24 22:09:00,437 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6379310344827587 [2021-03-24 22:09:00,438 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 296 transitions. [2021-03-24 22:09:00,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 296 transitions. [2021-03-24 22:09:00,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:09:00,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 296 transitions. [2021-03-24 22:09:00,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 37.0) internal successors, (296), 8 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 58.0) internal successors, (522), 9 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,439 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 58.0) internal successors, (522), 9 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,439 INFO L185 Difference]: Start difference. First operand has 37 places, 21 transitions, 113 flow. Second operand 8 states and 296 transitions. [2021-03-24 22:09:00,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 30 transitions, 235 flow [2021-03-24 22:09:00,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 30 transitions, 159 flow, removed 25 selfloop flow, removed 8 redundant places. [2021-03-24 22:09:00,441 INFO L241 Difference]: Finished difference. Result has 38 places, 21 transitions, 109 flow [2021-03-24 22:09:00,441 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=109, PETRI_PLACES=38, PETRI_TRANSITIONS=21} [2021-03-24 22:09:00,441 INFO L343 CegarLoopForPetriNet]: 22 programPoint places, 16 predicate places. [2021-03-24 22:09:00,441 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 21 transitions, 109 flow [2021-03-24 22:09:00,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,441 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:09:00,442 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:09:00,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 22:09:00,444 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 22:09:00,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:09:00,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1227197034, now seen corresponding path program 1 times [2021-03-24 22:09:00,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:09:00,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787791477] [2021-03-24 22:09:00,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:09:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:09:00,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:09:00,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-24 22:09:00,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:09:00,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-24 22:09:00,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 22:09:00,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:09:00,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:09:00,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787791477] [2021-03-24 22:09:00,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:09:00,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:09:00,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009426062] [2021-03-24 22:09:00,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 22:09:00,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:09:00,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 22:09:00,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-24 22:09:00,525 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 58 [2021-03-24 22:09:00,526 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 21 transitions, 109 flow. Second operand has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,526 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:09:00,526 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 58 [2021-03-24 22:09:00,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:09:00,551 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-24 22:09:00,552 INFO L130 PetriNetUnfolder]: For 21/26 co-relation queries the response was YES. [2021-03-24 22:09:00,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 17 events. 0/17 cut-off events. For 21/26 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 20 event pairs, 0 based on Foata normal form. 6/23 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-03-24 22:09:00,552 INFO L132 encePairwiseOnDemand]: 54/58 looper letters, 0 selfloop transitions, 0 changer transitions 15/15 dead transitions. [2021-03-24 22:09:00,552 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 15 transitions, 85 flow [2021-03-24 22:09:00,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 22:09:00,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 22:09:00,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 186 transitions. [2021-03-24 22:09:00,553 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6413793103448275 [2021-03-24 22:09:00,553 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 186 transitions. [2021-03-24 22:09:00,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 186 transitions. [2021-03-24 22:09:00,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:09:00,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 186 transitions. [2021-03-24 22:09:00,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 58.0) internal successors, (348), 6 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,555 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 58.0) internal successors, (348), 6 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,555 INFO L185 Difference]: Start difference. First operand has 38 places, 21 transitions, 109 flow. Second operand 5 states and 186 transitions. [2021-03-24 22:09:00,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 15 transitions, 85 flow [2021-03-24 22:09:00,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 15 transitions, 74 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-03-24 22:09:00,556 INFO L241 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2021-03-24 22:09:00,556 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2021-03-24 22:09:00,556 INFO L343 CegarLoopForPetriNet]: 22 programPoint places, 7 predicate places. [2021-03-24 22:09:00,556 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2021-03-24 22:09:00,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 22:09:00,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 10:09:00 BasicIcfg [2021-03-24 22:09:00,559 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 22:09:00,559 INFO L168 Benchmark]: Toolchain (without parser) took 1725.33 ms. Allocated memory was 255.9 MB in the beginning and 343.9 MB in the end (delta: 88.1 MB). Free memory was 234.8 MB in the beginning and 239.7 MB in the end (delta: -4.9 MB). Peak memory consumption was 82.9 MB. Max. memory is 16.0 GB. [2021-03-24 22:09:00,559 INFO L168 Benchmark]: CDTParser took 0.09 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. [2021-03-24 22:09:00,560 INFO L168 Benchmark]: CACSL2BoogieTranslator took 109.99 ms. Allocated memory was 255.9 MB in the beginning and 343.9 MB in the end (delta: 88.1 MB). Free memory was 234.4 MB in the beginning and 328.9 MB in the end (delta: -94.6 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.0 GB. [2021-03-24 22:09:00,560 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.13 ms. Allocated memory is still 343.9 MB. Free memory was 328.9 MB in the beginning and 327.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 22:09:00,560 INFO L168 Benchmark]: Boogie Preprocessor took 15.41 ms. Allocated memory is still 343.9 MB. Free memory was 327.3 MB in the beginning and 326.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 22:09:00,560 INFO L168 Benchmark]: RCFGBuilder took 218.90 ms. Allocated memory is still 343.9 MB. Free memory was 326.2 MB in the beginning and 311.6 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-24 22:09:00,561 INFO L168 Benchmark]: TraceAbstraction took 1340.57 ms. Allocated memory is still 343.9 MB. Free memory was 311.6 MB in the beginning and 239.7 MB in the end (delta: 71.9 MB). Peak memory consumption was 74.0 MB. Max. memory is 16.0 GB. [2021-03-24 22:09:00,562 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 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 109.99 ms. Allocated memory was 255.9 MB in the beginning and 343.9 MB in the end (delta: 88.1 MB). Free memory was 234.4 MB in the beginning and 328.9 MB in the end (delta: -94.6 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 36.13 ms. Allocated memory is still 343.9 MB. Free memory was 328.9 MB in the beginning and 327.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 15.41 ms. Allocated memory is still 343.9 MB. Free memory was 327.3 MB in the beginning and 326.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 218.90 ms. Allocated memory is still 343.9 MB. Free memory was 326.2 MB in the beginning and 311.6 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1340.57 ms. Allocated memory is still 343.9 MB. Free memory was 311.6 MB in the beginning and 239.7 MB in the end (delta: 71.9 MB). Peak memory consumption was 74.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 419.8ms, 38 PlacesBefore, 22 PlacesAfterwards, 32 TransitionsBefore, 16 TransitionsAfterwards, 252 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 16 TotalNumberOfCompositions, 274 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 214, positive: 195, positive conditional: 0, positive unconditional: 195, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 148, positive: 136, positive conditional: 0, positive unconditional: 136, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 148, positive: 136, positive conditional: 0, positive unconditional: 136, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 148, positive: 136, positive conditional: 0, positive unconditional: 136, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 35, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 214, positive: 59, positive conditional: 0, positive unconditional: 59, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 148, unknown conditional: 0, unknown unconditional: 148] , Statistics on independence cache: Total cache size (in pairs): 23, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - PositiveResult [Line: 37]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1232.0ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 352.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 497.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 62 SDtfs, 22 SDslu, 41 SDs, 0 SdLazy, 227 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 112.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 130.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=3, InterpolantAutomatonStates: 37, 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: 7.8ms SsaConstructionTime, 61.5ms SatisfiabilityAnalysisTime, 205.7ms InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 225 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...