/usr/bin/java -Xmx8000000000 -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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 23:16:59,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 23:16:59,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 23:16:59,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 23:16:59,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 23:16:59,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 23:16:59,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 23:16:59,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 23:16:59,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 23:16:59,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 23:16:59,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 23:16:59,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 23:16:59,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 23:16:59,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 23:16:59,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 23:16:59,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 23:16:59,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 23:16:59,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 23:16:59,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 23:16:59,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 23:16:59,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 23:16:59,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 23:16:59,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 23:16:59,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 23:16:59,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-05 23:16:59,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 23:16:59,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 23:16:59,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 23:16:59,316 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-05 23:16:59,358 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 23:16:59,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 23:16:59,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 23:16:59,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 23:16:59,361 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 23:16:59,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 23:16:59,361 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 23:16:59,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 23:16:59,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 23:16:59,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 23:16:59,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 23:16:59,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 23:16:59,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 23:16:59,364 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 23:16:59,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 23:16:59,364 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 23:16:59,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 23:16:59,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 23:16:59,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 23:16:59,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 23:16:59,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 23:16:59,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:16:59,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 23:16:59,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-05 23:16:59,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 23:16:59,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 23:16:59,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 23:16:59,366 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-05 23:16:59,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 23:16:59,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 23:16:59,701 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 23:16:59,705 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 23:16:59,706 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 23:16:59,706 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 23:16:59,707 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2020-10-05 23:16:59,783 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72aa3f943/7d97c3d9fcb341e3876ea342e76fb79a/FLAG476f00bbe [2020-10-05 23:17:00,325 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 23:17:00,326 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2020-10-05 23:17:00,341 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72aa3f943/7d97c3d9fcb341e3876ea342e76fb79a/FLAG476f00bbe [2020-10-05 23:17:00,619 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72aa3f943/7d97c3d9fcb341e3876ea342e76fb79a [2020-10-05 23:17:00,627 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 23:17:00,629 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 23:17:00,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 23:17:00,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 23:17:00,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 23:17:00,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:17:00" (1/1) ... [2020-10-05 23:17:00,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f98cbf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:00, skipping insertion in model container [2020-10-05 23:17:00,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:17:00" (1/1) ... [2020-10-05 23:17:00,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 23:17:00,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 23:17:01,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:17:01,240 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 23:17:01,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:17:01,405 INFO L208 MainTranslator]: Completed translation [2020-10-05 23:17:01,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:01 WrapperNode [2020-10-05 23:17:01,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 23:17:01,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 23:17:01,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 23:17:01,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 23:17:01,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:01" (1/1) ... [2020-10-05 23:17:01,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:01" (1/1) ... [2020-10-05 23:17:01,454 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 23:17:01,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 23:17:01,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 23:17:01,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 23:17:01,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:01" (1/1) ... [2020-10-05 23:17:01,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:01" (1/1) ... [2020-10-05 23:17:01,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:01" (1/1) ... [2020-10-05 23:17:01,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:01" (1/1) ... [2020-10-05 23:17:01,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:01" (1/1) ... [2020-10-05 23:17:01,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:01" (1/1) ... [2020-10-05 23:17:01,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:01" (1/1) ... [2020-10-05 23:17:01,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 23:17:01,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 23:17:01,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 23:17:01,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 23:17:01,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:01" (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 [2020-10-05 23:17:01,544 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-05 23:17:01,544 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-05 23:17:01,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 23:17:01,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 23:17:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 23:17:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 23:17:01,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 23:17:01,547 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 23:17:01,980 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 23:17:01,981 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-05 23:17:01,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:17:01 BoogieIcfgContainer [2020-10-05 23:17:01,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 23:17:01,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 23:17:01,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 23:17:01,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 23:17:01,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 11:17:00" (1/3) ... [2020-10-05 23:17:01,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27273e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:17:01, skipping insertion in model container [2020-10-05 23:17:01,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:01" (2/3) ... [2020-10-05 23:17:01,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27273e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:17:01, skipping insertion in model container [2020-10-05 23:17:01,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:17:01" (3/3) ... [2020-10-05 23:17:01,991 INFO L109 eAbstractionObserver]: Analyzing ICFG 18_read_write_lock.i [2020-10-05 23:17:02,002 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 23:17:02,002 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-05 23:17:02,010 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 23:17:02,011 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 23:17:02,034 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,035 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,035 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,035 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,036 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,036 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,037 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,037 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,040 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,041 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,041 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,041 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,042 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,042 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,059 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-05 23:17:02,081 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:17:02,082 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:17:02,082 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:17:02,082 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:17:02,082 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:17:02,082 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:17:02,082 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:17:02,083 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:17:02,097 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 39 transitions, 83 flow [2020-10-05 23:17:02,099 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 42 places, 39 transitions, 83 flow [2020-10-05 23:17:02,130 INFO L129 PetriNetUnfolder]: 1/38 cut-off events. [2020-10-05 23:17:02,130 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 23:17:02,134 INFO L80 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 38 events. 1/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 16 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2020-10-05 23:17:02,136 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 42 places, 39 transitions, 83 flow [2020-10-05 23:17:02,147 INFO L129 PetriNetUnfolder]: 1/38 cut-off events. [2020-10-05 23:17:02,148 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 23:17:02,148 INFO L80 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 38 events. 1/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 16 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2020-10-05 23:17:02,149 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 240 [2020-10-05 23:17:02,150 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:17:02,856 INFO L206 etLargeBlockEncoding]: Checked pairs total: 596 [2020-10-05 23:17:02,857 INFO L214 etLargeBlockEncoding]: Total number of compositions: 31 [2020-10-05 23:17:02,861 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 16 places, 13 transitions, 31 flow [2020-10-05 23:17:02,872 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 30 states. [2020-10-05 23:17:02,875 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-10-05 23:17:02,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-05 23:17:02,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:17:02,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-05 23:17:02,883 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:17:02,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:17:02,889 INFO L82 PathProgramCache]: Analyzing trace with hash 208157518, now seen corresponding path program 1 times [2020-10-05 23:17:02,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:17:02,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965768776] [2020-10-05 23:17:02,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:17:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:17:03,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:17:03,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965768776] [2020-10-05 23:17:03,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:17:03,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:17:03,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148642224] [2020-10-05 23:17:03,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:17:03,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:17:03,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:17:03,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:17:03,115 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 3 states. [2020-10-05 23:17:03,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:17:03,156 INFO L93 Difference]: Finished difference Result 32 states and 46 transitions. [2020-10-05 23:17:03,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:17:03,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-05 23:17:03,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:17:03,168 INFO L225 Difference]: With dead ends: 32 [2020-10-05 23:17:03,169 INFO L226 Difference]: Without dead ends: 12 [2020-10-05 23:17:03,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:17:03,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-05 23:17:03,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-05 23:17:03,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-05 23:17:03,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-10-05 23:17:03,206 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 5 [2020-10-05 23:17:03,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:17:03,206 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-10-05 23:17:03,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:17:03,206 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-10-05 23:17:03,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-05 23:17:03,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:17:03,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:17:03,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 23:17:03,208 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:17:03,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:17:03,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1837808105, now seen corresponding path program 1 times [2020-10-05 23:17:03,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:17:03,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249019422] [2020-10-05 23:17:03,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:17:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:17:03,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:17:03,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249019422] [2020-10-05 23:17:03,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:17:03,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:17:03,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463805029] [2020-10-05 23:17:03,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:17:03,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:17:03,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:17:03,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:17:03,266 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 3 states. [2020-10-05 23:17:03,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:17:03,277 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-10-05 23:17:03,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:17:03,278 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-05 23:17:03,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:17:03,279 INFO L225 Difference]: With dead ends: 12 [2020-10-05 23:17:03,279 INFO L226 Difference]: Without dead ends: 11 [2020-10-05 23:17:03,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:17:03,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-05 23:17:03,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-05 23:17:03,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-05 23:17:03,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-10-05 23:17:03,283 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2020-10-05 23:17:03,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:17:03,283 INFO L479 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-10-05 23:17:03,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:17:03,284 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-10-05 23:17:03,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-05 23:17:03,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:17:03,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:17:03,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 23:17:03,285 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:17:03,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:17:03,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1824085025, now seen corresponding path program 2 times [2020-10-05 23:17:03,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:17:03,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835300637] [2020-10-05 23:17:03,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:17:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:17:03,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:17:03,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835300637] [2020-10-05 23:17:03,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:17:03,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:17:03,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375799821] [2020-10-05 23:17:03,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:17:03,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:17:03,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:17:03,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:17:03,332 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 4 states. [2020-10-05 23:17:03,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:17:03,337 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2020-10-05 23:17:03,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:17:03,338 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-05 23:17:03,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:17:03,339 INFO L225 Difference]: With dead ends: 5 [2020-10-05 23:17:03,339 INFO L226 Difference]: Without dead ends: 0 [2020-10-05 23:17:03,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:17:03,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-05 23:17:03,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-05 23:17:03,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-05 23:17:03,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-05 23:17:03,340 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-10-05 23:17:03,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:17:03,341 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-05 23:17:03,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:17:03,341 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-05 23:17:03,341 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-05 23:17:03,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 23:17:03,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 11:17:03 BasicIcfg [2020-10-05 23:17:03,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 23:17:03,349 INFO L168 Benchmark]: Toolchain (without parser) took 2718.39 ms. Allocated memory was 139.5 MB in the beginning and 232.8 MB in the end (delta: 93.3 MB). Free memory was 100.8 MB in the beginning and 111.1 MB in the end (delta: -10.4 MB). Peak memory consumption was 83.0 MB. Max. memory is 7.1 GB. [2020-10-05 23:17:03,350 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 139.5 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-05 23:17:03,351 INFO L168 Benchmark]: CACSL2BoogieTranslator took 778.18 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 100.6 MB in the beginning and 158.4 MB in the end (delta: -57.9 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-10-05 23:17:03,352 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.45 ms. Allocated memory is still 201.3 MB. Free memory was 158.4 MB in the beginning and 156.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-05 23:17:03,353 INFO L168 Benchmark]: Boogie Preprocessor took 25.49 ms. Allocated memory is still 201.3 MB. Free memory was 156.4 MB in the beginning and 155.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-05 23:17:03,354 INFO L168 Benchmark]: RCFGBuilder took 503.22 ms. Allocated memory is still 201.3 MB. Free memory was 155.0 MB in the beginning and 126.9 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-10-05 23:17:03,355 INFO L168 Benchmark]: TraceAbstraction took 1361.37 ms. Allocated memory was 201.3 MB in the beginning and 232.8 MB in the end (delta: 31.5 MB). Free memory was 126.2 MB in the beginning and 111.1 MB in the end (delta: 15.1 MB). Peak memory consumption was 46.6 MB. Max. memory is 7.1 GB. [2020-10-05 23:17:03,359 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 139.5 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 778.18 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 100.6 MB in the beginning and 158.4 MB in the end (delta: -57.9 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.45 ms. Allocated memory is still 201.3 MB. Free memory was 158.4 MB in the beginning and 156.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.49 ms. Allocated memory is still 201.3 MB. Free memory was 156.4 MB in the beginning and 155.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 503.22 ms. Allocated memory is still 201.3 MB. Free memory was 155.0 MB in the beginning and 126.9 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1361.37 ms. Allocated memory was 201.3 MB in the beginning and 232.8 MB in the end (delta: 31.5 MB). Free memory was 126.2 MB in the beginning and 111.1 MB in the end (delta: 15.1 MB). Peak memory consumption was 46.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.7s, 42 ProgramPointsBefore, 16 ProgramPointsAfterwards, 39 TransitionsBefore, 13 TransitionsAfterwards, 240 CoEnabledTransitionPairs, 5 FixpointIterations, 10 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 135 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 596 CheckedPairsTotal, 31 TotalNumberOfCompositions - PositiveResult [Line: 698]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.7s, HoareTripleCheckerStatistics: 22 SDtfs, 9 SDslu, 8 SDs, 0 SdLazy, 11 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 156 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...