/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-atomic/peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 00:01:18,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 00:01:18,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 00:01:18,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 00:01:18,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 00:01:18,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 00:01:18,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 00:01:18,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 00:01:18,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 00:01:18,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 00:01:18,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 00:01:18,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 00:01:18,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 00:01:18,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 00:01:18,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 00:01:18,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 00:01:18,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 00:01:18,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 00:01:18,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 00:01:18,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 00:01:18,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 00:01:18,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 00:01:18,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 00:01:18,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 00:01:18,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 00:01:18,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 00:01:18,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 00:01:18,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 00:01:18,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 00:01:18,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 00:01:18,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 00:01:18,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 00:01:18,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 00:01:18,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 00:01:18,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 00:01:18,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 00:01:18,945 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 [2020-10-16 00:01:18,966 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 00:01:18,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 00:01:18,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 00:01:18,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 00:01:18,968 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 00:01:18,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 00:01:18,968 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 00:01:18,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 00:01:18,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 00:01:18,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 00:01:18,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 00:01:18,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 00:01:18,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 00:01:18,969 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 00:01:18,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 00:01:18,970 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 00:01:18,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 00:01:18,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 00:01:18,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 00:01:18,971 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 00:01:18,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 00:01:18,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 00:01:18,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 00:01:18,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 00:01:18,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 00:01:18,972 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 00:01:18,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 00:01:18,972 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 00:01:18,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 00:01:19,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 00:01:19,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 00:01:19,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 00:01:19,274 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 00:01:19,275 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 00:01:19,275 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2020-10-16 00:01:19,328 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6b10afb8/bd09740fd463453d8beb34a7ddc6b2d1/FLAGdf71f7d9f [2020-10-16 00:01:19,807 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 00:01:19,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i [2020-10-16 00:01:19,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6b10afb8/bd09740fd463453d8beb34a7ddc6b2d1/FLAGdf71f7d9f [2020-10-16 00:01:20,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6b10afb8/bd09740fd463453d8beb34a7ddc6b2d1 [2020-10-16 00:01:20,087 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 00:01:20,089 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 00:01:20,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 00:01:20,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 00:01:20,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 00:01:20,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:01:20" (1/1) ... [2020-10-16 00:01:20,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a309ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:20, skipping insertion in model container [2020-10-16 00:01:20,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:01:20" (1/1) ... [2020-10-16 00:01:20,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 00:01:20,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 00:01:20,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 00:01:20,594 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 00:01:20,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 00:01:20,721 INFO L208 MainTranslator]: Completed translation [2020-10-16 00:01:20,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:20 WrapperNode [2020-10-16 00:01:20,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 00:01:20,723 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 00:01:20,723 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 00:01:20,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 00:01:20,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:20" (1/1) ... [2020-10-16 00:01:20,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:20" (1/1) ... [2020-10-16 00:01:20,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 00:01:20,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 00:01:20,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 00:01:20,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 00:01:20,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:20" (1/1) ... [2020-10-16 00:01:20,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:20" (1/1) ... [2020-10-16 00:01:20,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:20" (1/1) ... [2020-10-16 00:01:20,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:20" (1/1) ... [2020-10-16 00:01:20,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:20" (1/1) ... [2020-10-16 00:01:20,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:20" (1/1) ... [2020-10-16 00:01:20,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:20" (1/1) ... [2020-10-16 00:01:20,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 00:01:20,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 00:01:20,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 00:01:20,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 00:01:20,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:20" (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 [2020-10-16 00:01:20,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 00:01:20,844 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 00:01:20,844 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 00:01:20,844 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 00:01:20,844 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 00:01:20,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 00:01:20,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 00:01:20,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 00:01:20,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 00:01:20,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 00:01:20,848 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 00:01:21,213 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 00:01:21,213 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-16 00:01:21,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:01:21 BoogieIcfgContainer [2020-10-16 00:01:21,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 00:01:21,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 00:01:21,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 00:01:21,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 00:01:21,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:01:20" (1/3) ... [2020-10-16 00:01:21,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a7cdb99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:01:21, skipping insertion in model container [2020-10-16 00:01:21,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:20" (2/3) ... [2020-10-16 00:01:21,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a7cdb99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:01:21, skipping insertion in model container [2020-10-16 00:01:21,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:01:21" (3/3) ... [2020-10-16 00:01:21,222 INFO L111 eAbstractionObserver]: Analyzing ICFG peterson.i [2020-10-16 00:01:21,232 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 00:01:21,239 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 00:01:21,240 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 00:01:21,263 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:21,264 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:21,264 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:21,264 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:21,265 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:21,265 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:21,266 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:21,266 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:21,266 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:21,266 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:21,267 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:21,267 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:21,270 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:21,271 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:21,271 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:21,271 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:21,277 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:21,277 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:21,277 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:21,277 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:21,300 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 00:01:21,316 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 00:01:21,317 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 00:01:21,317 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 00:01:21,317 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 00:01:21,317 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 00:01:21,317 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 00:01:21,317 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 00:01:21,318 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 00:01:21,329 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 62 transitions, 146 flow [2020-10-16 00:01:21,363 INFO L129 PetriNetUnfolder]: 7/62 cut-off events. [2020-10-16 00:01:21,364 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 00:01:21,369 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 62 events. 7/62 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 39. Up to 3 conditions per place. [2020-10-16 00:01:21,369 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 62 transitions, 146 flow [2020-10-16 00:01:21,375 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 50 transitions, 112 flow [2020-10-16 00:01:21,377 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 00:01:21,379 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 50 transitions, 112 flow [2020-10-16 00:01:21,381 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 50 transitions, 112 flow [2020-10-16 00:01:21,381 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 50 places, 50 transitions, 112 flow [2020-10-16 00:01:21,396 INFO L129 PetriNetUnfolder]: 6/52 cut-off events. [2020-10-16 00:01:21,397 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 00:01:21,398 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 52 events. 6/52 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2020-10-16 00:01:21,399 INFO L117 LiptonReduction]: Number of co-enabled transitions 756 [2020-10-16 00:01:22,179 INFO L132 LiptonReduction]: Checked pairs total: 1927 [2020-10-16 00:01:22,180 INFO L134 LiptonReduction]: Total number of compositions: 28 [2020-10-16 00:01:22,182 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 807 [2020-10-16 00:01:22,190 INFO L129 PetriNetUnfolder]: 2/13 cut-off events. [2020-10-16 00:01:22,190 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:01:22,191 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:01:22,192 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 00:01:22,192 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:01:22,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:01:22,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1551738424, now seen corresponding path program 1 times [2020-10-16 00:01:22,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:01:22,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556150457] [2020-10-16 00:01:22,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:01:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:01:22,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:01:22,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556150457] [2020-10-16 00:01:22,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:01:22,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 00:01:22,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492122698] [2020-10-16 00:01:22,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 00:01:22,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:01:22,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 00:01:22,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 00:01:22,409 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 90 [2020-10-16 00:01:22,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 68 flow. Second operand 2 states. [2020-10-16 00:01:22,411 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:01:22,411 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 90 [2020-10-16 00:01:22,412 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:01:22,423 INFO L129 PetriNetUnfolder]: 2/27 cut-off events. [2020-10-16 00:01:22,423 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 00:01:22,424 INFO L80 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 27 events. 2/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs, 0 based on Foata normal form. 3/26 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2020-10-16 00:01:22,425 INFO L132 encePairwiseOnDemand]: 87/90 looper letters, 0 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2020-10-16 00:01:22,426 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 25 transitions, 62 flow [2020-10-16 00:01:22,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 00:01:22,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-16 00:01:22,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 163 transitions. [2020-10-16 00:01:22,439 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.9055555555555556 [2020-10-16 00:01:22,440 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 163 transitions. [2020-10-16 00:01:22,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 163 transitions. [2020-10-16 00:01:22,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:01:22,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 163 transitions. [2020-10-16 00:01:22,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-16 00:01:22,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-16 00:01:22,453 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-16 00:01:22,456 INFO L185 Difference]: Start difference. First operand has 29 places, 28 transitions, 68 flow. Second operand 2 states and 163 transitions. [2020-10-16 00:01:22,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 25 transitions, 62 flow [2020-10-16 00:01:22,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 54 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-16 00:01:22,462 INFO L241 Difference]: Finished difference. Result has 26 places, 25 transitions, 54 flow [2020-10-16 00:01:22,465 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=54, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2020-10-16 00:01:22,466 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2020-10-16 00:01:22,466 INFO L481 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 54 flow [2020-10-16 00:01:22,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 00:01:22,467 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:01:22,467 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:01:22,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 00:01:22,467 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:01:22,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:01:22,468 INFO L82 PathProgramCache]: Analyzing trace with hash -859277329, now seen corresponding path program 1 times [2020-10-16 00:01:22,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:01:22,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096082649] [2020-10-16 00:01:22,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:01:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:01:22,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:01:22,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096082649] [2020-10-16 00:01:22,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:01:22,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 00:01:22,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542898649] [2020-10-16 00:01:22,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:01:22,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:01:22,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:01:22,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:01:22,539 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 90 [2020-10-16 00:01:22,540 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 54 flow. Second operand 3 states. [2020-10-16 00:01:22,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:01:22,540 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 90 [2020-10-16 00:01:22,540 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:01:22,592 INFO L129 PetriNetUnfolder]: 9/68 cut-off events. [2020-10-16 00:01:22,592 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:01:22,593 INFO L80 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 68 events. 9/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 227 event pairs, 2 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 98. Up to 18 conditions per place. [2020-10-16 00:01:22,594 INFO L132 encePairwiseOnDemand]: 85/90 looper letters, 7 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2020-10-16 00:01:22,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 28 transitions, 80 flow [2020-10-16 00:01:22,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:01:22,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:01:22,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 207 transitions. [2020-10-16 00:01:22,603 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2020-10-16 00:01:22,603 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 207 transitions. [2020-10-16 00:01:22,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 207 transitions. [2020-10-16 00:01:22,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:01:22,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 207 transitions. [2020-10-16 00:01:22,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:01:22,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:01:22,609 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:01:22,609 INFO L185 Difference]: Start difference. First operand has 26 places, 25 transitions, 54 flow. Second operand 3 states and 207 transitions. [2020-10-16 00:01:22,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 28 transitions, 80 flow [2020-10-16 00:01:22,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 28 transitions, 80 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 00:01:22,612 INFO L241 Difference]: Finished difference. Result has 30 places, 26 transitions, 74 flow [2020-10-16 00:01:22,613 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=30, PETRI_TRANSITIONS=26} [2020-10-16 00:01:22,613 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2020-10-16 00:01:22,614 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 74 flow [2020-10-16 00:01:22,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:01:22,614 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:01:22,614 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:01:22,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 00:01:22,615 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:01:22,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:01:22,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1139685252, now seen corresponding path program 1 times [2020-10-16 00:01:22,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:01:22,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613063761] [2020-10-16 00:01:22,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:01:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:01:22,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:01:22,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613063761] [2020-10-16 00:01:22,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:01:22,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 00:01:22,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32824999] [2020-10-16 00:01:22,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:01:22,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:01:22,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:01:22,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:01:22,686 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 90 [2020-10-16 00:01:22,686 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 74 flow. Second operand 3 states. [2020-10-16 00:01:22,686 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:01:22,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 90 [2020-10-16 00:01:22,686 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:01:22,711 INFO L129 PetriNetUnfolder]: 4/55 cut-off events. [2020-10-16 00:01:22,712 INFO L130 PetriNetUnfolder]: For 11/14 co-relation queries the response was YES. [2020-10-16 00:01:22,712 INFO L80 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 55 events. 4/55 cut-off events. For 11/14 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 165 event pairs, 2 based on Foata normal form. 6/57 useless extension candidates. Maximal degree in co-relation 95. Up to 11 conditions per place. [2020-10-16 00:01:22,713 INFO L132 encePairwiseOnDemand]: 86/90 looper letters, 6 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2020-10-16 00:01:22,713 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 90 flow [2020-10-16 00:01:22,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:01:22,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:01:22,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 205 transitions. [2020-10-16 00:01:22,715 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7592592592592593 [2020-10-16 00:01:22,715 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 205 transitions. [2020-10-16 00:01:22,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 205 transitions. [2020-10-16 00:01:22,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:01:22,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 205 transitions. [2020-10-16 00:01:22,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:01:22,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:01:22,717 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:01:22,718 INFO L185 Difference]: Start difference. First operand has 30 places, 26 transitions, 74 flow. Second operand 3 states and 205 transitions. [2020-10-16 00:01:22,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 90 flow [2020-10-16 00:01:22,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 00:01:22,722 INFO L241 Difference]: Finished difference. Result has 31 places, 26 transitions, 78 flow [2020-10-16 00:01:22,723 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2020-10-16 00:01:22,723 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2020-10-16 00:01:22,723 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 78 flow [2020-10-16 00:01:22,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:01:22,723 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:01:22,724 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:01:22,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 00:01:22,724 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:01:22,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:01:22,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1596788745, now seen corresponding path program 1 times [2020-10-16 00:01:22,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:01:22,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393185837] [2020-10-16 00:01:22,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:01:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:01:22,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:01:22,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393185837] [2020-10-16 00:01:22,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:01:22,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 00:01:22,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383026882] [2020-10-16 00:01:22,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 00:01:22,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:01:22,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 00:01:22,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 00:01:22,765 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 90 [2020-10-16 00:01:22,766 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 78 flow. Second operand 4 states. [2020-10-16 00:01:22,766 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:01:22,766 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 90 [2020-10-16 00:01:22,766 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:01:22,808 INFO L129 PetriNetUnfolder]: 22/99 cut-off events. [2020-10-16 00:01:22,808 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2020-10-16 00:01:22,809 INFO L80 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 99 events. 22/99 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 346 event pairs, 2 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 176. Up to 16 conditions per place. [2020-10-16 00:01:22,809 INFO L132 encePairwiseOnDemand]: 83/90 looper letters, 9 selfloop transitions, 6 changer transitions 2/34 dead transitions. [2020-10-16 00:01:22,810 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 34 transitions, 128 flow [2020-10-16 00:01:22,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 00:01:22,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 00:01:22,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 267 transitions. [2020-10-16 00:01:22,812 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7416666666666667 [2020-10-16 00:01:22,812 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 267 transitions. [2020-10-16 00:01:22,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 267 transitions. [2020-10-16 00:01:22,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:01:22,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 267 transitions. [2020-10-16 00:01:22,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 00:01:22,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 00:01:22,815 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 00:01:22,815 INFO L185 Difference]: Start difference. First operand has 31 places, 26 transitions, 78 flow. Second operand 4 states and 267 transitions. [2020-10-16 00:01:22,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 34 transitions, 128 flow [2020-10-16 00:01:22,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 34 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 00:01:22,818 INFO L241 Difference]: Finished difference. Result has 36 places, 31 transitions, 122 flow [2020-10-16 00:01:22,818 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2020-10-16 00:01:22,818 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2020-10-16 00:01:22,818 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 122 flow [2020-10-16 00:01:22,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 00:01:22,819 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:01:22,819 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:01:22,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 00:01:22,819 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:01:22,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:01:22,820 INFO L82 PathProgramCache]: Analyzing trace with hash -2037726299, now seen corresponding path program 2 times [2020-10-16 00:01:22,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:01:22,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556384160] [2020-10-16 00:01:22,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:01:22,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:01:22,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:01:22,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556384160] [2020-10-16 00:01:22,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:01:22,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 00:01:22,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153640051] [2020-10-16 00:01:22,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 00:01:22,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:01:22,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 00:01:22,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 00:01:22,857 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 90 [2020-10-16 00:01:22,857 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 122 flow. Second operand 4 states. [2020-10-16 00:01:22,857 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:01:22,857 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 90 [2020-10-16 00:01:22,857 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:01:22,895 INFO L129 PetriNetUnfolder]: 20/72 cut-off events. [2020-10-16 00:01:22,895 INFO L130 PetriNetUnfolder]: For 23/24 co-relation queries the response was YES. [2020-10-16 00:01:22,895 INFO L80 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 72 events. 20/72 cut-off events. For 23/24 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 174 event pairs, 0 based on Foata normal form. 7/78 useless extension candidates. Maximal degree in co-relation 177. Up to 21 conditions per place. [2020-10-16 00:01:22,896 INFO L132 encePairwiseOnDemand]: 83/90 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2020-10-16 00:01:22,896 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 37 transitions, 184 flow [2020-10-16 00:01:22,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 00:01:22,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 00:01:22,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 267 transitions. [2020-10-16 00:01:22,898 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7416666666666667 [2020-10-16 00:01:22,898 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 267 transitions. [2020-10-16 00:01:22,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 267 transitions. [2020-10-16 00:01:22,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:01:22,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 267 transitions. [2020-10-16 00:01:22,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 00:01:22,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 00:01:22,901 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 00:01:22,901 INFO L185 Difference]: Start difference. First operand has 36 places, 31 transitions, 122 flow. Second operand 4 states and 267 transitions. [2020-10-16 00:01:22,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 37 transitions, 184 flow [2020-10-16 00:01:22,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 37 transitions, 176 flow, removed 3 selfloop flow, removed 1 redundant places. [2020-10-16 00:01:22,903 INFO L241 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2020-10-16 00:01:22,904 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2020-10-16 00:01:22,904 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2020-10-16 00:01:22,904 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2020-10-16 00:01:22,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 00:01:22,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 00:01:22,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:01:22 BasicIcfg [2020-10-16 00:01:22,909 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 00:01:22,911 INFO L168 Benchmark]: Toolchain (without parser) took 2821.99 ms. Allocated memory was 250.6 MB in the beginning and 353.9 MB in the end (delta: 103.3 MB). Free memory was 206.6 MB in the beginning and 224.5 MB in the end (delta: -17.9 MB). Peak memory consumption was 85.4 MB. Max. memory is 14.2 GB. [2020-10-16 00:01:22,912 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 00:01:22,913 INFO L168 Benchmark]: CACSL2BoogieTranslator took 633.37 ms. Allocated memory was 250.6 MB in the beginning and 310.9 MB in the end (delta: 60.3 MB). Free memory was 206.6 MB in the beginning and 268.9 MB in the end (delta: -62.3 MB). Peak memory consumption was 32.8 MB. Max. memory is 14.2 GB. [2020-10-16 00:01:22,914 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.85 ms. Allocated memory is still 310.9 MB. Free memory was 268.9 MB in the beginning and 266.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 00:01:22,914 INFO L168 Benchmark]: Boogie Preprocessor took 25.29 ms. Allocated memory is still 310.9 MB. Free memory was 266.4 MB in the beginning and 263.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 00:01:22,915 INFO L168 Benchmark]: RCFGBuilder took 423.62 ms. Allocated memory is still 310.9 MB. Free memory was 263.9 MB in the beginning and 244.5 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. [2020-10-16 00:01:22,916 INFO L168 Benchmark]: TraceAbstraction took 1692.98 ms. Allocated memory was 310.9 MB in the beginning and 353.9 MB in the end (delta: 43.0 MB). Free memory was 244.5 MB in the beginning and 224.5 MB in the end (delta: 20.1 MB). Peak memory consumption was 63.0 MB. Max. memory is 14.2 GB. [2020-10-16 00:01:22,920 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 633.37 ms. Allocated memory was 250.6 MB in the beginning and 310.9 MB in the end (delta: 60.3 MB). Free memory was 206.6 MB in the beginning and 268.9 MB in the end (delta: -62.3 MB). Peak memory consumption was 32.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 41.85 ms. Allocated memory is still 310.9 MB. Free memory was 268.9 MB in the beginning and 266.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 25.29 ms. Allocated memory is still 310.9 MB. Free memory was 266.4 MB in the beginning and 263.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 423.62 ms. Allocated memory is still 310.9 MB. Free memory was 263.9 MB in the beginning and 244.5 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 1692.98 ms. Allocated memory was 310.9 MB in the beginning and 353.9 MB in the end (delta: 43.0 MB). Free memory was 244.5 MB in the beginning and 224.5 MB in the end (delta: 20.1 MB). Peak memory consumption was 63.0 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 458 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 20 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 155 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.7s, 50 PlacesBefore, 29 PlacesAfterwards, 50 TransitionsBefore, 28 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 5 FixpointIterations, 11 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 28 TotalNumberOfCompositions, 1927 MoverChecksTotal - PositiveResult [Line: 690]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 681]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 37 SDtfs, 12 SDslu, 2 SDs, 0 SdLazy, 40 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 849 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...