/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/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-ext/16_peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 15:15:41,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 15:15:41,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 15:15:41,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 15:15:41,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 15:15:41,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 15:15:41,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 15:15:41,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 15:15:41,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 15:15:41,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 15:15:41,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 15:15:41,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 15:15:41,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 15:15:41,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 15:15:41,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 15:15:41,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 15:15:41,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 15:15:41,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 15:15:41,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 15:15:41,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 15:15:41,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 15:15:41,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 15:15:41,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 15:15:41,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 15:15:41,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 15:15:41,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 15:15:41,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 15:15:41,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 15:15:41,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 15:15:41,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 15:15:41,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 15:15:41,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 15:15:41,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 15:15:41,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 15:15:41,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 15:15:41,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 15:15:41,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 15:15:41,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 15:15:41,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 15:15:41,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 15:15:41,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 15:15:41,917 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-09 15:15:41,938 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 15:15:41,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 15:15:41,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 15:15:41,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 15:15:41,940 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 15:15:41,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 15:15:41,941 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 15:15:41,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 15:15:41,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 15:15:41,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 15:15:41,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 15:15:41,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 15:15:41,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 15:15:41,942 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 15:15:41,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 15:15:41,942 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 15:15:41,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 15:15:41,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 15:15:41,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 15:15:41,943 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 15:15:41,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 15:15:41,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 15:15:41,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 15:15:41,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 15:15:41,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 15:15:41,944 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 15:15:41,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 15:15:41,945 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 15:15:41,945 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 15:15:41,945 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 15:15:42,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 15:15:42,289 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 15:15:42,293 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 15:15:42,294 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 15:15:42,297 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 15:15:42,298 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/16_peterson.i [2020-10-09 15:15:42,361 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e14f4493/6931a2271d08432f9a90c37b264d7b03/FLAG7b35a7bfc [2020-10-09 15:15:42,942 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 15:15:42,942 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/16_peterson.i [2020-10-09 15:15:42,956 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e14f4493/6931a2271d08432f9a90c37b264d7b03/FLAG7b35a7bfc [2020-10-09 15:15:43,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e14f4493/6931a2271d08432f9a90c37b264d7b03 [2020-10-09 15:15:43,239 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 15:15:43,242 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 15:15:43,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 15:15:43,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 15:15:43,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 15:15:43,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 03:15:43" (1/1) ... [2020-10-09 15:15:43,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d22c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 03:15:43, skipping insertion in model container [2020-10-09 15:15:43,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 03:15:43" (1/1) ... [2020-10-09 15:15:43,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 15:15:43,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 15:15:43,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 15:15:43,843 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 15:15:43,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 15:15:43,989 INFO L208 MainTranslator]: Completed translation [2020-10-09 15:15:43,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 03:15:43 WrapperNode [2020-10-09 15:15:43,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 15:15:43,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 15:15:43,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 15:15:43,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 15:15:43,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 03:15:43" (1/1) ... [2020-10-09 15:15:44,014 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 03:15:43" (1/1) ... [2020-10-09 15:15:44,036 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 15:15:44,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 15:15:44,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 15:15:44,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 15:15:44,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 03:15:43" (1/1) ... [2020-10-09 15:15:44,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 03:15:43" (1/1) ... [2020-10-09 15:15:44,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 03:15:43" (1/1) ... [2020-10-09 15:15:44,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 03:15:43" (1/1) ... [2020-10-09 15:15:44,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 03:15:43" (1/1) ... [2020-10-09 15:15:44,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 03:15:43" (1/1) ... [2020-10-09 15:15:44,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 03:15:43" (1/1) ... [2020-10-09 15:15:44,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 15:15:44,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 15:15:44,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 15:15:44,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 15:15:44,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 03:15:43" (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 [2020-10-09 15:15:44,137 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-09 15:15:44,137 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-09 15:15:44,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 15:15:44,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 15:15:44,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 15:15:44,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 15:15:44,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 15:15:44,140 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 15:15:44,427 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 15:15:44,428 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-09 15:15:44,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 03:15:44 BoogieIcfgContainer [2020-10-09 15:15:44,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 15:15:44,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 15:15:44,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 15:15:44,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 15:15:44,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 03:15:43" (1/3) ... [2020-10-09 15:15:44,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7744d620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 03:15:44, skipping insertion in model container [2020-10-09 15:15:44,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 03:15:43" (2/3) ... [2020-10-09 15:15:44,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7744d620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 03:15:44, skipping insertion in model container [2020-10-09 15:15:44,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 03:15:44" (3/3) ... [2020-10-09 15:15:44,439 INFO L111 eAbstractionObserver]: Analyzing ICFG 16_peterson.i [2020-10-09 15:15:44,450 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 15:15:44,458 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-09 15:15:44,459 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 15:15:44,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 15:15:44,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 15:15:44,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 15:15:44,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 15:15:44,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 15:15:44,488 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 15:15:44,491 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 15:15:44,492 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 15:15:44,492 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 15:15:44,492 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 15:15:44,514 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-09 15:15:44,535 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 15:15:44,535 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 15:15:44,536 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 15:15:44,536 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 15:15:44,536 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 15:15:44,536 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 15:15:44,536 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 15:15:44,537 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 15:15:44,549 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions, 107 flow [2020-10-09 15:15:44,584 INFO L129 PetriNetUnfolder]: 6/50 cut-off events. [2020-10-09 15:15:44,584 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 15:15:44,595 INFO L80 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 50 events. 6/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2020-10-09 15:15:44,595 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 51 transitions, 107 flow [2020-10-09 15:15:44,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 50 transitions, 103 flow [2020-10-09 15:15:44,612 INFO L129 PetriNetUnfolder]: 3/28 cut-off events. [2020-10-09 15:15:44,612 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 15:15:44,613 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 15:15:44,614 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 15:15:44,615 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 15:15:44,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 15:15:44,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1983207058, now seen corresponding path program 1 times [2020-10-09 15:15:44,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 15:15:44,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404919559] [2020-10-09 15:15:44,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-09 15:15:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 15:15:44,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-09 15:15:44,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 15:15:44,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 15:15:44,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 15:15:44,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 15:15:44,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404919559] [2020-10-09 15:15:44,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 15:15:44,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-09 15:15:44,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016252822] [2020-10-09 15:15:44,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-09 15:15:44,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 15:15:44,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-09 15:15:44,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-09 15:15:44,782 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 51 [2020-10-09 15:15:44,784 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 50 transitions, 103 flow. Second operand 2 states. [2020-10-09 15:15:44,784 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 15:15:44,784 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 51 [2020-10-09 15:15:44,786 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 15:15:44,813 INFO L129 PetriNetUnfolder]: 2/46 cut-off events. [2020-10-09 15:15:44,813 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 15:15:44,814 INFO L80 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 46 events. 2/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 4/46 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2020-10-09 15:15:44,816 INFO L132 encePairwiseOnDemand]: 47/51 looper letters, 0 selfloop transitions, 0 changer transitions 0/46 dead transitions. [2020-10-09 15:15:44,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 95 flow [2020-10-09 15:15:44,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-09 15:15:44,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-09 15:15:44,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 98 transitions. [2020-10-09 15:15:44,830 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9607843137254902 [2020-10-09 15:15:44,831 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 98 transitions. [2020-10-09 15:15:44,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 98 transitions. [2020-10-09 15:15:44,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 15:15:44,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 98 transitions. [2020-10-09 15:15:44,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-09 15:15:44,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-09 15:15:44,844 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-09 15:15:44,846 INFO L185 Difference]: Start difference. First operand has 48 places, 50 transitions, 103 flow. Second operand 2 states and 98 transitions. [2020-10-09 15:15:44,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 95 flow [2020-10-09 15:15:44,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 94 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-09 15:15:44,855 INFO L241 Difference]: Finished difference. Result has 48 places, 46 transitions, 94 flow [2020-10-09 15:15:44,858 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=94, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2020-10-09 15:15:44,859 INFO L341 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2020-10-09 15:15:44,860 INFO L481 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 94 flow [2020-10-09 15:15:44,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-09 15:15:44,860 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 15:15:44,860 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 15:15:45,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 15:15:45,073 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 15:15:45,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 15:15:45,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1983177267, now seen corresponding path program 1 times [2020-10-09 15:15:45,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 15:15:45,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26849873] [2020-10-09 15:15:45,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-09 15:15:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 15:15:45,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-09 15:15:45,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 15:15:45,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 15:15:45,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 15:15:45,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 15:15:45,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26849873] [2020-10-09 15:15:45,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 15:15:45,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-09 15:15:45,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410394686] [2020-10-09 15:15:45,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 15:15:45,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 15:15:45,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 15:15:45,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 15:15:45,207 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 51 [2020-10-09 15:15:45,208 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 94 flow. Second operand 3 states. [2020-10-09 15:15:45,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 15:15:45,209 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 51 [2020-10-09 15:15:45,209 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 15:15:45,244 INFO L129 PetriNetUnfolder]: 9/94 cut-off events. [2020-10-09 15:15:45,245 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 15:15:45,246 INFO L80 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 94 events. 9/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 254 event pairs, 3 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 122. Up to 17 conditions per place. [2020-10-09 15:15:45,247 INFO L132 encePairwiseOnDemand]: 44/51 looper letters, 5 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2020-10-09 15:15:45,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 120 flow [2020-10-09 15:15:45,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 15:15:45,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-09 15:15:45,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2020-10-09 15:15:45,250 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8627450980392157 [2020-10-09 15:15:45,250 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 132 transitions. [2020-10-09 15:15:45,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 132 transitions. [2020-10-09 15:15:45,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 15:15:45,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 132 transitions. [2020-10-09 15:15:45,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-09 15:15:45,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-09 15:15:45,254 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-09 15:15:45,254 INFO L185 Difference]: Start difference. First operand has 48 places, 46 transitions, 94 flow. Second operand 3 states and 132 transitions. [2020-10-09 15:15:45,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 120 flow [2020-10-09 15:15:45,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 49 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-09 15:15:45,260 INFO L241 Difference]: Finished difference. Result has 52 places, 49 transitions, 130 flow [2020-10-09 15:15:45,260 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2020-10-09 15:15:45,261 INFO L341 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2020-10-09 15:15:45,261 INFO L481 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 130 flow [2020-10-09 15:15:45,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 15:15:45,261 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 15:15:45,261 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 15:15:45,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 15:15:45,474 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 15:15:45,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 15:15:45,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1840311886, now seen corresponding path program 1 times [2020-10-09 15:15:45,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 15:15:45,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752075027] [2020-10-09 15:15:45,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-09 15:15:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 15:15:45,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-09 15:15:45,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 15:15:45,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 15:15:45,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 15:15:45,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 15:15:45,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752075027] [2020-10-09 15:15:45,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 15:15:45,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-09 15:15:45,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021062778] [2020-10-09 15:15:45,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 15:15:45,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 15:15:45,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 15:15:45,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 15:15:45,576 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 51 [2020-10-09 15:15:45,576 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 130 flow. Second operand 3 states. [2020-10-09 15:15:45,576 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 15:15:45,576 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 51 [2020-10-09 15:15:45,577 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 15:15:45,604 INFO L129 PetriNetUnfolder]: 4/84 cut-off events. [2020-10-09 15:15:45,605 INFO L130 PetriNetUnfolder]: For 16/22 co-relation queries the response was YES. [2020-10-09 15:15:45,605 INFO L80 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 84 events. 4/84 cut-off events. For 16/22 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 213 event pairs, 2 based on Foata normal form. 6/86 useless extension candidates. Maximal degree in co-relation 130. Up to 11 conditions per place. [2020-10-09 15:15:45,606 INFO L132 encePairwiseOnDemand]: 47/51 looper letters, 6 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2020-10-09 15:15:45,606 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 134 flow [2020-10-09 15:15:45,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 15:15:45,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-09 15:15:45,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2020-10-09 15:15:45,609 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8496732026143791 [2020-10-09 15:15:45,609 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 130 transitions. [2020-10-09 15:15:45,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 130 transitions. [2020-10-09 15:15:45,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 15:15:45,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 130 transitions. [2020-10-09 15:15:45,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-09 15:15:45,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-09 15:15:45,638 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-09 15:15:45,638 INFO L185 Difference]: Start difference. First operand has 52 places, 49 transitions, 130 flow. Second operand 3 states and 130 transitions. [2020-10-09 15:15:45,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 134 flow [2020-10-09 15:15:45,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 47 transitions, 128 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-09 15:15:45,646 INFO L241 Difference]: Finished difference. Result has 52 places, 47 transitions, 116 flow [2020-10-09 15:15:45,646 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2020-10-09 15:15:45,647 INFO L341 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2020-10-09 15:15:45,650 INFO L481 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 116 flow [2020-10-09 15:15:45,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 15:15:45,650 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 15:15:45,651 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 15:15:45,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-09 15:15:45,871 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 15:15:45,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 15:15:45,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1244669700, now seen corresponding path program 1 times [2020-10-09 15:15:45,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 15:15:45,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097742197] [2020-10-09 15:15:45,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-09 15:15:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 15:15:45,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-09 15:15:45,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 15:15:45,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 15:15:45,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 15:15:45,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 15:15:45,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097742197] [2020-10-09 15:15:45,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 15:15:45,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-09 15:15:45,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402296439] [2020-10-09 15:15:45,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 15:15:45,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 15:15:45,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 15:15:45,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-09 15:15:46,054 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 51 [2020-10-09 15:15:46,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 116 flow. Second operand 4 states. [2020-10-09 15:15:46,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 15:15:46,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 51 [2020-10-09 15:15:46,056 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 15:15:46,094 INFO L129 PetriNetUnfolder]: 18/127 cut-off events. [2020-10-09 15:15:46,094 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-09 15:15:46,095 INFO L80 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 127 events. 18/127 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 389 event pairs, 2 based on Foata normal form. 1/122 useless extension candidates. Maximal degree in co-relation 195. Up to 14 conditions per place. [2020-10-09 15:15:46,098 INFO L132 encePairwiseOnDemand]: 44/51 looper letters, 9 selfloop transitions, 6 changer transitions 1/54 dead transitions. [2020-10-09 15:15:46,098 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 54 transitions, 162 flow [2020-10-09 15:15:46,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-09 15:15:46,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-09 15:15:46,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2020-10-09 15:15:46,104 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2020-10-09 15:15:46,104 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 170 transitions. [2020-10-09 15:15:46,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 170 transitions. [2020-10-09 15:15:46,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 15:15:46,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 170 transitions. [2020-10-09 15:15:46,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-09 15:15:46,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-09 15:15:46,107 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-09 15:15:46,107 INFO L185 Difference]: Start difference. First operand has 52 places, 47 transitions, 116 flow. Second operand 4 states and 170 transitions. [2020-10-09 15:15:46,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 54 transitions, 162 flow [2020-10-09 15:15:46,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 54 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-09 15:15:46,110 INFO L241 Difference]: Finished difference. Result has 57 places, 52 transitions, 160 flow [2020-10-09 15:15:46,111 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2020-10-09 15:15:46,111 INFO L341 CegarLoopForPetriNet]: 48 programPoint places, 9 predicate places. [2020-10-09 15:15:46,111 INFO L481 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 160 flow [2020-10-09 15:15:46,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 15:15:46,111 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 15:15:46,112 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 15:15:46,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-09 15:15:46,326 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 15:15:46,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 15:15:46,326 INFO L82 PathProgramCache]: Analyzing trace with hash -973313908, now seen corresponding path program 2 times [2020-10-09 15:15:46,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 15:15:46,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500031446] [2020-10-09 15:15:46,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-09 15:15:46,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-09 15:15:46,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 15:15:46,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-09 15:15:46,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 15:15:46,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 15:15:46,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 15:15:46,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 15:15:46,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500031446] [2020-10-09 15:15:46,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 15:15:46,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-09 15:15:46,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597888459] [2020-10-09 15:15:46,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 15:15:46,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 15:15:46,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 15:15:46,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-09 15:15:46,492 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 51 [2020-10-09 15:15:46,493 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 160 flow. Second operand 4 states. [2020-10-09 15:15:46,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 15:15:46,493 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 51 [2020-10-09 15:15:46,493 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 15:15:46,516 INFO L129 PetriNetUnfolder]: 20/95 cut-off events. [2020-10-09 15:15:46,516 INFO L130 PetriNetUnfolder]: For 22/23 co-relation queries the response was YES. [2020-10-09 15:15:46,517 INFO L80 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 95 events. 20/95 cut-off events. For 22/23 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 192 event pairs, 0 based on Foata normal form. 5/97 useless extension candidates. Maximal degree in co-relation 200. Up to 19 conditions per place. [2020-10-09 15:15:46,517 INFO L132 encePairwiseOnDemand]: 44/51 looper letters, 0 selfloop transitions, 0 changer transitions 55/55 dead transitions. [2020-10-09 15:15:46,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 212 flow [2020-10-09 15:15:46,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-09 15:15:46,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-09 15:15:46,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2020-10-09 15:15:46,519 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2020-10-09 15:15:46,519 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 170 transitions. [2020-10-09 15:15:46,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 170 transitions. [2020-10-09 15:15:46,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 15:15:46,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 170 transitions. [2020-10-09 15:15:46,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-09 15:15:46,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-09 15:15:46,522 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-09 15:15:46,522 INFO L185 Difference]: Start difference. First operand has 57 places, 52 transitions, 160 flow. Second operand 4 states and 170 transitions. [2020-10-09 15:15:46,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 212 flow [2020-10-09 15:15:46,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 206 flow, removed 3 selfloop flow, removed 0 redundant places. [2020-10-09 15:15:46,525 INFO L241 Difference]: Finished difference. Result has 56 places, 0 transitions, 0 flow [2020-10-09 15:15:46,526 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=56, PETRI_TRANSITIONS=0} [2020-10-09 15:15:46,526 INFO L341 CegarLoopForPetriNet]: 48 programPoint places, 8 predicate places. [2020-10-09 15:15:46,526 INFO L481 AbstractCegarLoop]: Abstraction has has 56 places, 0 transitions, 0 flow [2020-10-09 15:15:46,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 15:15:46,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-09 15:15:46,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 03:15:46 BasicIcfg [2020-10-09 15:15:46,752 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 15:15:46,755 INFO L168 Benchmark]: Toolchain (without parser) took 3513.11 ms. Allocated memory was 249.0 MB in the beginning and 355.5 MB in the end (delta: 106.4 MB). Free memory was 204.2 MB in the beginning and 256.7 MB in the end (delta: -52.6 MB). Peak memory consumption was 53.9 MB. Max. memory is 14.2 GB. [2020-10-09 15:15:46,755 INFO L168 Benchmark]: CDTParser took 1.39 ms. Allocated memory is still 249.0 MB. Free memory is still 225.4 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 15:15:46,756 INFO L168 Benchmark]: CACSL2BoogieTranslator took 747.23 ms. Allocated memory was 249.0 MB in the beginning and 306.2 MB in the end (delta: 57.1 MB). Free memory was 204.2 MB in the beginning and 259.6 MB in the end (delta: -55.4 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. [2020-10-09 15:15:46,757 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.84 ms. Allocated memory is still 306.2 MB. Free memory was 259.6 MB in the beginning and 257.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 15:15:46,758 INFO L168 Benchmark]: Boogie Preprocessor took 37.74 ms. Allocated memory is still 306.2 MB. Free memory is still 257.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 15:15:46,758 INFO L168 Benchmark]: RCFGBuilder took 355.90 ms. Allocated memory is still 306.2 MB. Free memory was 257.1 MB in the beginning and 237.8 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. [2020-10-09 15:15:46,759 INFO L168 Benchmark]: TraceAbstraction took 2320.80 ms. Allocated memory was 306.2 MB in the beginning and 355.5 MB in the end (delta: 49.3 MB). Free memory was 237.8 MB in the beginning and 256.7 MB in the end (delta: -18.9 MB). Peak memory consumption was 30.3 MB. Max. memory is 14.2 GB. [2020-10-09 15:15:46,764 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.39 ms. Allocated memory is still 249.0 MB. Free memory is still 225.4 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 747.23 ms. Allocated memory was 249.0 MB in the beginning and 306.2 MB in the end (delta: 57.1 MB). Free memory was 204.2 MB in the beginning and 259.6 MB in the end (delta: -55.4 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 44.84 ms. Allocated memory is still 306.2 MB. Free memory was 259.6 MB in the beginning and 257.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 37.74 ms. Allocated memory is still 306.2 MB. Free memory is still 257.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 355.90 ms. Allocated memory is still 306.2 MB. Free memory was 257.1 MB in the beginning and 237.8 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2320.80 ms. Allocated memory was 306.2 MB in the beginning and 355.5 MB in the end (delta: 49.3 MB). Free memory was 237.8 MB in the beginning and 256.7 MB in the end (delta: -18.9 MB). Peak memory consumption was 30.3 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 681]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 690]: 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 2 procedures, 46 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: 2.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 23 SDslu, 8 SDs, 0 SdLazy, 48 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 224 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=160occurred 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, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 224 ConstructedInterpolants, 0 QuantifiedInterpolants, 7608 SizeOfPredicates, 4 NumberOfNonLiveVariables, 273 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...