/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-MCR.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 22:51:19,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 22:51:19,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 22:51:19,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 22:51:19,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 22:51:19,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 22:51:19,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 22:51:19,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 22:51:19,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 22:51:19,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 22:51:19,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 22:51:19,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 22:51:19,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 22:51:19,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 22:51:19,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 22:51:19,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 22:51:19,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 22:51:19,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 22:51:19,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 22:51:19,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 22:51:19,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 22:51:19,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 22:51:19,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 22:51:19,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 22:51:19,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-27 22:51:19,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-27 22:51:19,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-27 22:51:19,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-27 22:51:19,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-27 22:51:19,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-27 22:51:19,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 22:51:19,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 22:51:19,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 22:51:19,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 22:51:19,257 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 22:51:19,257 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 22:51:19,258 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 22:51:19,258 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 22:51:19,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 22:51:19,259 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 22:51:19,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 22:51:19,261 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-MCR.epf [2019-12-27 22:51:19,281 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 22:51:19,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 22:51:19,282 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 22:51:19,282 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 22:51:19,283 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 22:51:19,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 22:51:19,283 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 22:51:19,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 22:51:19,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 22:51:19,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 22:51:19,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 22:51:19,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 22:51:19,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 22:51:19,284 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 22:51:19,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 22:51:19,285 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 22:51:19,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 22:51:19,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 22:51:19,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 22:51:19,286 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 22:51:19,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 22:51:19,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 22:51:19,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 22:51:19,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 22:51:19,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 22:51:19,287 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 22:51:19,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 22:51:19,287 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2019-12-27 22:51:19,287 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-27 22:51:19,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 22:51:19,288 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2019-12-27 22:51:19,288 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 22:51:19,546 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 22:51:19,564 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 22:51:19,567 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 22:51:19,568 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 22:51:19,569 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 22:51:19,569 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2019-12-27 22:51:19,645 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdbda1ea4/eb2b766bc3084f3b9e81ef1366a05ddc/FLAGf07174436 [2019-12-27 22:51:20,252 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 22:51:20,253 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2019-12-27 22:51:20,273 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdbda1ea4/eb2b766bc3084f3b9e81ef1366a05ddc/FLAGf07174436 [2019-12-27 22:51:20,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdbda1ea4/eb2b766bc3084f3b9e81ef1366a05ddc [2019-12-27 22:51:20,503 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 22:51:20,505 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 22:51:20,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 22:51:20,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 22:51:20,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 22:51:20,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 10:51:20" (1/1) ... [2019-12-27 22:51:20,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e1151a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:51:20, skipping insertion in model container [2019-12-27 22:51:20,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 10:51:20" (1/1) ... [2019-12-27 22:51:20,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 22:51:20,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 22:51:21,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 22:51:21,071 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 22:51:21,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 22:51:21,201 INFO L208 MainTranslator]: Completed translation [2019-12-27 22:51:21,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:51:21 WrapperNode [2019-12-27 22:51:21,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 22:51:21,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 22:51:21,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 22:51:21,203 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 22:51:21,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:51:21" (1/1) ... [2019-12-27 22:51:21,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:51:21" (1/1) ... [2019-12-27 22:51:21,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 22:51:21,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 22:51:21,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 22:51:21,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 22:51:21,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:51:21" (1/1) ... [2019-12-27 22:51:21,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:51:21" (1/1) ... [2019-12-27 22:51:21,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:51:21" (1/1) ... [2019-12-27 22:51:21,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:51:21" (1/1) ... [2019-12-27 22:51:21,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:51:21" (1/1) ... [2019-12-27 22:51:21,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:51:21" (1/1) ... [2019-12-27 22:51:21,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:51:21" (1/1) ... [2019-12-27 22:51:21,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 22:51:21,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 22:51:21,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 22:51:21,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 22:51:21,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:51:21" (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 [2019-12-27 22:51:21,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 22:51:21,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-27 22:51:21,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 22:51:21,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 22:51:21,355 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-27 22:51:21,356 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-27 22:51:21,356 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-27 22:51:21,357 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-27 22:51:21,357 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-27 22:51:21,357 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-27 22:51:21,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-27 22:51:21,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 22:51:21,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 22:51:21,360 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-27 22:51:21,745 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 22:51:21,745 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-27 22:51:21,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 10:51:21 BoogieIcfgContainer [2019-12-27 22:51:21,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 22:51:21,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 22:51:21,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 22:51:21,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 22:51:21,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 10:51:20" (1/3) ... [2019-12-27 22:51:21,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e461a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 10:51:21, skipping insertion in model container [2019-12-27 22:51:21,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:51:21" (2/3) ... [2019-12-27 22:51:21,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e461a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 10:51:21, skipping insertion in model container [2019-12-27 22:51:21,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 10:51:21" (3/3) ... [2019-12-27 22:51:21,756 INFO L109 eAbstractionObserver]: Analyzing ICFG safe026_tso.opt.i [2019-12-27 22:51:21,766 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 22:51:21,766 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 22:51:21,775 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 22:51:21,776 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 22:51:21,804 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,804 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,804 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,805 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,805 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,805 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,806 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,806 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,806 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,807 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,807 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,807 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,808 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,808 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,808 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,808 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,808 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,809 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,812 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,813 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,813 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,813 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,818 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,819 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,819 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,819 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,827 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,827 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,828 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,828 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:51:21,840 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-27 22:51:21,858 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 22:51:21,858 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 22:51:21,858 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 22:51:21,859 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-27 22:51:21,859 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 22:51:21,859 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 22:51:21,859 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 22:51:21,859 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 22:51:21,873 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 53 transitions [2019-12-27 22:51:21,875 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-27 22:51:21,923 INFO L132 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-27 22:51:21,923 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 22:51:21,931 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs. 0/48 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-27 22:51:21,934 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-27 22:51:21,954 INFO L132 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-27 22:51:21,954 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 22:51:21,956 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs. 0/48 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-27 22:51:21,958 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-27 22:51:21,959 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 22:51:23,339 INFO L206 etLargeBlockEncoding]: Checked pairs total: 489 [2019-12-27 22:51:23,339 INFO L214 etLargeBlockEncoding]: Total number of compositions: 43 [2019-12-27 22:51:23,355 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-27 22:51:23,366 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-27 22:51:23,368 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-27 22:51:23,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 22:51:23,375 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 22:51:23,376 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 22:51:23,376 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 22:51:23,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 22:51:23,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1221233282, now seen corresponding path program 1 times [2019-12-27 22:51:23,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 22:51:23,395 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308841523] [2019-12-27 22:51:23,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 22:51:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 22:51:23,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 22:51:23,673 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308841523] [2019-12-27 22:51:23,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 22:51:23,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-27 22:51:23,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1114514031] [2019-12-27 22:51:23,678 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 22:51:23,686 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 22:51:23,706 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 9 states and 8 transitions. [2019-12-27 22:51:23,707 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 22:51:23,711 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 22:51:23,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 22:51:23,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 22:51:23,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 22:51:23,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 22:51:23,731 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-27 22:51:23,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 22:51:23,762 INFO L93 Difference]: Finished difference Result 42 states and 84 transitions. [2019-12-27 22:51:23,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 22:51:23,765 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-27 22:51:23,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 22:51:23,786 INFO L225 Difference]: With dead ends: 42 [2019-12-27 22:51:23,786 INFO L226 Difference]: Without dead ends: 34 [2019-12-27 22:51:23,791 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 22:51:23,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-27 22:51:23,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-27 22:51:23,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-27 22:51:23,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 64 transitions. [2019-12-27 22:51:23,841 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 64 transitions. Word has length 8 [2019-12-27 22:51:23,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 22:51:23,843 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 64 transitions. [2019-12-27 22:51:23,843 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 22:51:23,843 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 64 transitions. [2019-12-27 22:51:23,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 22:51:23,845 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 22:51:23,845 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 22:51:23,846 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 22:51:23,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 22:51:23,846 INFO L82 PathProgramCache]: Analyzing trace with hash 796473804, now seen corresponding path program 1 times [2019-12-27 22:51:23,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 22:51:23,847 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105503358] [2019-12-27 22:51:23,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 22:51:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 22:51:23,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 22:51:23,960 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105503358] [2019-12-27 22:51:23,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 22:51:23,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 22:51:23,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1636404478] [2019-12-27 22:51:23,962 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 22:51:23,963 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 22:51:23,969 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 10 states and 9 transitions. [2019-12-27 22:51:23,969 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 22:51:23,969 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 22:51:23,972 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 22:51:23,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 22:51:23,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 22:51:23,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 22:51:23,973 INFO L87 Difference]: Start difference. First operand 34 states and 64 transitions. Second operand 4 states. [2019-12-27 22:51:24,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 22:51:24,004 INFO L93 Difference]: Finished difference Result 39 states and 68 transitions. [2019-12-27 22:51:24,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 22:51:24,005 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-27 22:51:24,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 22:51:24,006 INFO L225 Difference]: With dead ends: 39 [2019-12-27 22:51:24,006 INFO L226 Difference]: Without dead ends: 31 [2019-12-27 22:51:24,007 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 22:51:24,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-27 22:51:24,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-12-27 22:51:24,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-27 22:51:24,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 54 transitions. [2019-12-27 22:51:24,015 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 54 transitions. Word has length 9 [2019-12-27 22:51:24,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 22:51:24,016 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 54 transitions. [2019-12-27 22:51:24,016 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 22:51:24,016 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 54 transitions. [2019-12-27 22:51:24,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 22:51:24,017 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 22:51:24,017 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 22:51:24,017 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 22:51:24,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 22:51:24,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1474951325, now seen corresponding path program 1 times [2019-12-27 22:51:24,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 22:51:24,018 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593859951] [2019-12-27 22:51:24,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 22:51:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 22:51:24,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 22:51:24,101 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593859951] [2019-12-27 22:51:24,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 22:51:24,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 22:51:24,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1898864827] [2019-12-27 22:51:24,102 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 22:51:24,103 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 22:51:24,106 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 15 states and 18 transitions. [2019-12-27 22:51:24,106 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 22:51:24,107 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 22:51:24,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 22:51:24,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 22:51:24,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 22:51:24,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 22:51:24,109 INFO L87 Difference]: Start difference. First operand 31 states and 54 transitions. Second operand 4 states. [2019-12-27 22:51:24,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 22:51:24,145 INFO L93 Difference]: Finished difference Result 41 states and 60 transitions. [2019-12-27 22:51:24,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 22:51:24,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-27 22:51:24,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 22:51:24,147 INFO L225 Difference]: With dead ends: 41 [2019-12-27 22:51:24,147 INFO L226 Difference]: Without dead ends: 29 [2019-12-27 22:51:24,148 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 22:51:24,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-27 22:51:24,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2019-12-27 22:51:24,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-27 22:51:24,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 41 transitions. [2019-12-27 22:51:24,156 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 41 transitions. Word has length 10 [2019-12-27 22:51:24,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 22:51:24,156 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 41 transitions. [2019-12-27 22:51:24,156 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 22:51:24,157 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 41 transitions. [2019-12-27 22:51:24,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 22:51:24,158 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 22:51:24,158 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 22:51:24,158 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 22:51:24,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 22:51:24,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1079116931, now seen corresponding path program 1 times [2019-12-27 22:51:24,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 22:51:24,160 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980050227] [2019-12-27 22:51:24,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 22:51:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 22:51:24,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 22:51:24,335 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980050227] [2019-12-27 22:51:24,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 22:51:24,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 22:51:24,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [683143638] [2019-12-27 22:51:24,335 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 22:51:24,336 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 22:51:24,339 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 11 states and 10 transitions. [2019-12-27 22:51:24,339 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 22:51:24,339 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 22:51:24,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 22:51:24,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 22:51:24,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 22:51:24,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 22:51:24,341 INFO L87 Difference]: Start difference. First operand 28 states and 41 transitions. Second operand 5 states. [2019-12-27 22:51:24,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 22:51:24,388 INFO L93 Difference]: Finished difference Result 31 states and 42 transitions. [2019-12-27 22:51:24,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 22:51:24,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-12-27 22:51:24,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 22:51:24,389 INFO L225 Difference]: With dead ends: 31 [2019-12-27 22:51:24,389 INFO L226 Difference]: Without dead ends: 25 [2019-12-27 22:51:24,390 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-27 22:51:24,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-27 22:51:24,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-12-27 22:51:24,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-27 22:51:24,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2019-12-27 22:51:24,396 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 10 [2019-12-27 22:51:24,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 22:51:24,396 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2019-12-27 22:51:24,397 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 22:51:24,397 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2019-12-27 22:51:24,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 22:51:24,398 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 22:51:24,398 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 22:51:24,398 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 22:51:24,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 22:51:24,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1076556641, now seen corresponding path program 2 times [2019-12-27 22:51:24,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 22:51:24,399 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34225873] [2019-12-27 22:51:24,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 22:51:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 22:51:24,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 22:51:24,494 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34225873] [2019-12-27 22:51:24,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 22:51:24,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-27 22:51:24,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [218301472] [2019-12-27 22:51:24,495 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 22:51:24,496 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 22:51:24,498 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 13 states and 14 transitions. [2019-12-27 22:51:24,498 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 22:51:24,541 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 2 times. [2019-12-27 22:51:24,542 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-27 22:51:24,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 22:51:24,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-27 22:51:24,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-12-27 22:51:24,543 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand 7 states. [2019-12-27 22:51:24,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 22:51:24,619 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2019-12-27 22:51:24,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 22:51:24,620 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2019-12-27 22:51:24,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 22:51:24,620 INFO L225 Difference]: With dead ends: 25 [2019-12-27 22:51:24,621 INFO L226 Difference]: Without dead ends: 18 [2019-12-27 22:51:24,621 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-12-27 22:51:24,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-27 22:51:24,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-12-27 22:51:24,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-27 22:51:24,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2019-12-27 22:51:24,624 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 10 [2019-12-27 22:51:24,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 22:51:24,624 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2019-12-27 22:51:24,625 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-27 22:51:24,625 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2019-12-27 22:51:24,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 22:51:24,625 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 22:51:24,625 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 22:51:24,626 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 22:51:24,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 22:51:24,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1518589970, now seen corresponding path program 1 times [2019-12-27 22:51:24,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 22:51:24,627 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513668586] [2019-12-27 22:51:24,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 22:51:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 22:51:24,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 22:51:24,660 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513668586] [2019-12-27 22:51:24,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 22:51:24,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 22:51:24,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [145500964] [2019-12-27 22:51:24,660 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 22:51:24,662 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 22:51:24,664 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 18 states and 23 transitions. [2019-12-27 22:51:24,664 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 22:51:24,665 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 22:51:24,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 22:51:24,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 22:51:24,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 22:51:24,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 22:51:24,666 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand 4 states. [2019-12-27 22:51:24,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 22:51:24,682 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2019-12-27 22:51:24,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 22:51:24,682 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-27 22:51:24,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 22:51:24,682 INFO L225 Difference]: With dead ends: 17 [2019-12-27 22:51:24,683 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 22:51:24,683 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 22:51:24,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 22:51:24,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 22:51:24,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 22:51:24,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 22:51:24,684 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-27 22:51:24,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 22:51:24,684 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 22:51:24,684 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 22:51:24,684 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 22:51:24,684 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 22:51:24,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 10:51:24 BasicIcfg [2019-12-27 22:51:24,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 22:51:24,691 INFO L168 Benchmark]: Toolchain (without parser) took 4186.36 ms. Allocated memory was 139.5 MB in the beginning and 244.8 MB in the end (delta: 105.4 MB). Free memory was 101.1 MB in the beginning and 121.8 MB in the end (delta: -20.7 MB). Peak memory consumption was 84.7 MB. Max. memory is 7.1 GB. [2019-12-27 22:51:24,692 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-12-27 22:51:24,693 INFO L168 Benchmark]: CACSL2BoogieTranslator took 696.51 ms. Allocated memory was 139.5 MB in the beginning and 205.5 MB in the end (delta: 66.1 MB). Free memory was 100.9 MB in the beginning and 162.9 MB in the end (delta: -61.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2019-12-27 22:51:24,694 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.42 ms. Allocated memory is still 205.5 MB. Free memory was 162.2 MB in the beginning and 160.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-12-27 22:51:24,695 INFO L168 Benchmark]: Boogie Preprocessor took 27.82 ms. Allocated memory is still 205.5 MB. Free memory was 160.3 MB in the beginning and 159.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-27 22:51:24,696 INFO L168 Benchmark]: RCFGBuilder took 465.14 ms. Allocated memory is still 205.5 MB. Free memory was 159.0 MB in the beginning and 138.8 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2019-12-27 22:51:24,697 INFO L168 Benchmark]: TraceAbstraction took 2940.53 ms. Allocated memory was 205.5 MB in the beginning and 244.8 MB in the end (delta: 39.3 MB). Free memory was 138.1 MB in the beginning and 121.8 MB in the end (delta: 16.3 MB). Peak memory consumption was 55.6 MB. Max. memory is 7.1 GB. [2019-12-27 22:51:24,701 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 696.51 ms. Allocated memory was 139.5 MB in the beginning and 205.5 MB in the end (delta: 66.1 MB). Free memory was 100.9 MB in the beginning and 162.9 MB in the end (delta: -61.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.42 ms. Allocated memory is still 205.5 MB. Free memory was 162.2 MB in the beginning and 160.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.82 ms. Allocated memory is still 205.5 MB. Free memory was 160.3 MB in the beginning and 159.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 465.14 ms. Allocated memory is still 205.5 MB. Free memory was 159.0 MB in the beginning and 138.8 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2940.53 ms. Allocated memory was 205.5 MB in the beginning and 244.8 MB in the end (delta: 39.3 MB). Free memory was 138.1 MB in the beginning and 121.8 MB in the end (delta: 16.3 MB). Peak memory consumption was 55.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 62 ProgramPointsBefore, 21 ProgramPointsAfterwards, 53 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 210 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 489 CheckedPairsTotal, 43 TotalNumberOfCompositions - PositiveResult [Line: 4]: 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 4 procedures, 53 locations, 1 error locations. Result: SAFE, OverallTime: 2.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 66 SDtfs, 61 SDslu, 68 SDs, 0 SdLazy, 58 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 6 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 1553 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...