/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-atomic/read_write_lock-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 23:12:24,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 23:12:24,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 23:12:24,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 23:12:24,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 23:12:24,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 23:12:24,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 23:12:24,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 23:12:24,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 23:12:24,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 23:12:24,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 23:12:24,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 23:12:24,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 23:12:24,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 23:12:24,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 23:12:24,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 23:12:24,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 23:12:24,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 23:12:24,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 23:12:24,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 23:12:24,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 23:12:24,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 23:12:24,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 23:12:24,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 23:12:24,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-05 23:12:24,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-05 23:12:24,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-05 23:12:24,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-05 23:12:24,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-05 23:12:24,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-05 23:12:24,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 23:12:24,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 23:12:24,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 23:12:24,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 23:12:24,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 23:12:24,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 23:12:24,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 23:12:24,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 23:12:24,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 23:12:24,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 23:12:24,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 23:12:24,343 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 23:12:24,365 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 23:12:24,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 23:12:24,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 23:12:24,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 23:12:24,367 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 23:12:24,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 23:12:24,368 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 23:12:24,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 23:12:24,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 23:12:24,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 23:12:24,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 23:12:24,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 23:12:24,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 23:12:24,369 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 23:12:24,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 23:12:24,369 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 23:12:24,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 23:12:24,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 23:12:24,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 23:12:24,370 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 23:12:24,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 23:12:24,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:12:24,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 23:12:24,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-05 23:12:24,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 23:12:24,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 23:12:24,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 23:12:24,372 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-05 23:12:24,372 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 23:12:24,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 23:12:24,689 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 23:12:24,692 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 23:12:24,694 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 23:12:24,694 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 23:12:24,695 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i [2020-10-05 23:12:24,756 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f024d4425/9de4f34c4b1e4cdfa17fcae09cad11c8/FLAGdd555ca61 [2020-10-05 23:12:25,244 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 23:12:25,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i [2020-10-05 23:12:25,261 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f024d4425/9de4f34c4b1e4cdfa17fcae09cad11c8/FLAGdd555ca61 [2020-10-05 23:12:25,527 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f024d4425/9de4f34c4b1e4cdfa17fcae09cad11c8 [2020-10-05 23:12:25,537 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 23:12:25,539 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 23:12:25,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 23:12:25,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 23:12:25,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 23:12:25,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:12:25" (1/1) ... [2020-10-05 23:12:25,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@638f7574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:25, skipping insertion in model container [2020-10-05 23:12:25,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:12:25" (1/1) ... [2020-10-05 23:12:25,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 23:12:25,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 23:12:26,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:12:26,056 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 23:12:26,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:12:26,206 INFO L208 MainTranslator]: Completed translation [2020-10-05 23:12:26,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:26 WrapperNode [2020-10-05 23:12:26,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 23:12:26,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 23:12:26,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 23:12:26,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 23:12:26,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:26" (1/1) ... [2020-10-05 23:12:26,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:26" (1/1) ... [2020-10-05 23:12:26,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 23:12:26,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 23:12:26,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 23:12:26,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 23:12:26,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:26" (1/1) ... [2020-10-05 23:12:26,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:26" (1/1) ... [2020-10-05 23:12:26,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:26" (1/1) ... [2020-10-05 23:12:26,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:26" (1/1) ... [2020-10-05 23:12:26,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:26" (1/1) ... [2020-10-05 23:12:26,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:26" (1/1) ... [2020-10-05 23:12:26,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:26" (1/1) ... [2020-10-05 23:12:26,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 23:12:26,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 23:12:26,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 23:12:26,286 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 23:12:26,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:26" (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 23:12:26,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-05 23:12:26,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 23:12:26,347 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2020-10-05 23:12:26,348 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2020-10-05 23:12:26,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 23:12:26,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 23:12:26,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 23:12:26,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 23:12:26,348 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2020-10-05 23:12:26,349 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2020-10-05 23:12:26,350 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 23:12:26,826 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 23:12:26,826 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-05 23:12:26,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:12:26 BoogieIcfgContainer [2020-10-05 23:12:26,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 23:12:26,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 23:12:26,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 23:12:26,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 23:12:26,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 11:12:25" (1/3) ... [2020-10-05 23:12:26,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12fbdc53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:12:26, skipping insertion in model container [2020-10-05 23:12:26,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:26" (2/3) ... [2020-10-05 23:12:26,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12fbdc53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:12:26, skipping insertion in model container [2020-10-05 23:12:26,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:12:26" (3/3) ... [2020-10-05 23:12:26,838 INFO L109 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2020-10-05 23:12:26,849 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 23:12:26,849 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-05 23:12:26,858 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 23:12:26,859 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 23:12:26,892 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,892 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,893 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,893 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,894 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,894 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,894 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,894 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,895 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,895 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,896 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,896 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,896 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,897 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,897 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,897 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,897 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,898 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,898 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,898 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,899 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,899 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,900 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,900 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,900 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,901 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,901 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,901 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,902 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,902 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,902 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,902 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,903 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,903 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,903 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,904 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,904 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,904 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,904 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,905 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,905 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,905 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,909 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,909 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,910 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,910 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,910 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,910 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,914 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,914 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,914 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,915 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,915 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,915 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,915 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,918 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,918 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,918 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,918 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,919 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,919 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,921 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,921 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,921 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,921 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,921 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,922 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,922 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:26,959 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-05 23:12:26,976 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:12:26,976 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:12:26,976 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:12:26,977 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:12:26,977 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:12:26,977 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:12:26,977 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:12:26,977 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:12:26,993 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 102 transitions, 272 flow [2020-10-05 23:12:26,995 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 101 places, 102 transitions, 272 flow [2020-10-05 23:12:27,057 INFO L129 PetriNetUnfolder]: 19/136 cut-off events. [2020-10-05 23:12:27,058 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-10-05 23:12:27,068 INFO L80 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 136 events. 19/136 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 327 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 93. Up to 12 conditions per place. [2020-10-05 23:12:27,075 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 101 places, 102 transitions, 272 flow [2020-10-05 23:12:27,110 INFO L129 PetriNetUnfolder]: 19/136 cut-off events. [2020-10-05 23:12:27,111 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-10-05 23:12:27,112 INFO L80 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 136 events. 19/136 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 327 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 93. Up to 12 conditions per place. [2020-10-05 23:12:27,116 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2626 [2020-10-05 23:12:27,117 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:12:28,409 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-10-05 23:12:28,559 INFO L206 etLargeBlockEncoding]: Checked pairs total: 8300 [2020-10-05 23:12:28,560 INFO L214 etLargeBlockEncoding]: Total number of compositions: 46 [2020-10-05 23:12:28,563 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 59 places, 59 transitions, 186 flow [2020-10-05 23:12:29,043 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5928 states. [2020-10-05 23:12:29,045 INFO L276 IsEmpty]: Start isEmpty. Operand 5928 states. [2020-10-05 23:12:29,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 23:12:29,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:29,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:12:29,055 INFO L427 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-05 23:12:29,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:29,062 INFO L82 PathProgramCache]: Analyzing trace with hash -315234292, now seen corresponding path program 1 times [2020-10-05 23:12:29,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:29,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139002732] [2020-10-05 23:12:29,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:12:29,317 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 23:12:29,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139002732] [2020-10-05 23:12:29,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:12:29,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:12:29,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826685802] [2020-10-05 23:12:29,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:12:29,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:12:29,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:12:29,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:12:29,345 INFO L87 Difference]: Start difference. First operand 5928 states. Second operand 4 states. [2020-10-05 23:12:29,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:12:29,574 INFO L93 Difference]: Finished difference Result 12085 states and 40801 transitions. [2020-10-05 23:12:29,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:12:29,576 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-05 23:12:29,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:12:29,665 INFO L225 Difference]: With dead ends: 12085 [2020-10-05 23:12:29,666 INFO L226 Difference]: Without dead ends: 8300 [2020-10-05 23:12:29,667 INFO L675 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 [2020-10-05 23:12:29,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8300 states. [2020-10-05 23:12:30,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8300 to 5357. [2020-10-05 23:12:30,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5357 states. [2020-10-05 23:12:30,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5357 states to 5357 states and 18240 transitions. [2020-10-05 23:12:30,076 INFO L78 Accepts]: Start accepts. Automaton has 5357 states and 18240 transitions. Word has length 8 [2020-10-05 23:12:30,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:12:30,077 INFO L479 AbstractCegarLoop]: Abstraction has 5357 states and 18240 transitions. [2020-10-05 23:12:30,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:12:30,077 INFO L276 IsEmpty]: Start isEmpty. Operand 5357 states and 18240 transitions. [2020-10-05 23:12:30,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:12:30,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:30,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:12:30,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 23:12:30,080 INFO L427 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-05 23:12:30,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:30,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1744343844, now seen corresponding path program 1 times [2020-10-05 23:12:30,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:30,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820844726] [2020-10-05 23:12:30,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:12:30,136 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 23:12:30,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820844726] [2020-10-05 23:12:30,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:12:30,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:12:30,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989857876] [2020-10-05 23:12:30,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:12:30,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:12:30,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:12:30,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:12:30,140 INFO L87 Difference]: Start difference. First operand 5357 states and 18240 transitions. Second operand 3 states. [2020-10-05 23:12:30,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:12:30,221 INFO L93 Difference]: Finished difference Result 4578 states and 13797 transitions. [2020-10-05 23:12:30,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:12:30,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-05 23:12:30,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:12:30,253 INFO L225 Difference]: With dead ends: 4578 [2020-10-05 23:12:30,253 INFO L226 Difference]: Without dead ends: 4526 [2020-10-05 23:12:30,254 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 23:12:30,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4526 states. [2020-10-05 23:12:30,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4526 to 4526. [2020-10-05 23:12:30,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4526 states. [2020-10-05 23:12:30,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4526 states to 4526 states and 13659 transitions. [2020-10-05 23:12:30,407 INFO L78 Accepts]: Start accepts. Automaton has 4526 states and 13659 transitions. Word has length 10 [2020-10-05 23:12:30,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:12:30,407 INFO L479 AbstractCegarLoop]: Abstraction has 4526 states and 13659 transitions. [2020-10-05 23:12:30,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:12:30,408 INFO L276 IsEmpty]: Start isEmpty. Operand 4526 states and 13659 transitions. [2020-10-05 23:12:30,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:12:30,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:30,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:12:30,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 23:12:30,410 INFO L427 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-05 23:12:30,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:30,411 INFO L82 PathProgramCache]: Analyzing trace with hash 2002550628, now seen corresponding path program 2 times [2020-10-05 23:12:30,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:30,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659087148] [2020-10-05 23:12:30,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:12:30,479 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 23:12:30,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659087148] [2020-10-05 23:12:30,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:12:30,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:12:30,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615891085] [2020-10-05 23:12:30,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:12:30,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:12:30,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:12:30,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:12:30,484 INFO L87 Difference]: Start difference. First operand 4526 states and 13659 transitions. Second operand 4 states. [2020-10-05 23:12:30,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:12:30,549 INFO L93 Difference]: Finished difference Result 3248 states and 8071 transitions. [2020-10-05 23:12:30,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:12:30,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-05 23:12:30,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:12:30,583 INFO L225 Difference]: With dead ends: 3248 [2020-10-05 23:12:30,584 INFO L226 Difference]: Without dead ends: 3092 [2020-10-05 23:12:30,584 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 23:12:30,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2020-10-05 23:12:30,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 2633. [2020-10-05 23:12:30,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2633 states. [2020-10-05 23:12:30,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 6696 transitions. [2020-10-05 23:12:30,666 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 6696 transitions. Word has length 10 [2020-10-05 23:12:30,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:12:30,667 INFO L479 AbstractCegarLoop]: Abstraction has 2633 states and 6696 transitions. [2020-10-05 23:12:30,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:12:30,667 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 6696 transitions. [2020-10-05 23:12:30,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:12:30,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:30,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:12:30,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 23:12:30,675 INFO L427 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-05 23:12:30,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:30,675 INFO L82 PathProgramCache]: Analyzing trace with hash 947561452, now seen corresponding path program 1 times [2020-10-05 23:12:30,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:30,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432754694] [2020-10-05 23:12:30,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:12:30,755 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 23:12:30,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432754694] [2020-10-05 23:12:30,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:12:30,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:12:30,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810491885] [2020-10-05 23:12:30,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:12:30,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:12:30,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:12:30,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:12:30,758 INFO L87 Difference]: Start difference. First operand 2633 states and 6696 transitions. Second operand 4 states. [2020-10-05 23:12:30,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:12:30,834 INFO L93 Difference]: Finished difference Result 2942 states and 7439 transitions. [2020-10-05 23:12:30,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:12:30,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-05 23:12:30,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:12:30,841 INFO L225 Difference]: With dead ends: 2942 [2020-10-05 23:12:30,846 INFO L226 Difference]: Without dead ends: 2203 [2020-10-05 23:12:30,846 INFO L675 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 [2020-10-05 23:12:30,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2020-10-05 23:12:30,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 1783. [2020-10-05 23:12:30,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1783 states. [2020-10-05 23:12:30,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 4594 transitions. [2020-10-05 23:12:30,952 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 4594 transitions. Word has length 12 [2020-10-05 23:12:30,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:12:30,953 INFO L479 AbstractCegarLoop]: Abstraction has 1783 states and 4594 transitions. [2020-10-05 23:12:30,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:12:30,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 4594 transitions. [2020-10-05 23:12:30,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-05 23:12:30,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:30,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:12:30,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 23:12:30,956 INFO L427 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-05 23:12:30,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:30,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1233084173, now seen corresponding path program 1 times [2020-10-05 23:12:30,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:30,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200987235] [2020-10-05 23:12:30,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:12:31,052 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 23:12:31,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200987235] [2020-10-05 23:12:31,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:12:31,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-05 23:12:31,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167184670] [2020-10-05 23:12:31,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 23:12:31,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:12:31,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 23:12:31,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:12:31,056 INFO L87 Difference]: Start difference. First operand 1783 states and 4594 transitions. Second operand 6 states. [2020-10-05 23:12:31,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:12:31,147 INFO L93 Difference]: Finished difference Result 2026 states and 5182 transitions. [2020-10-05 23:12:31,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 23:12:31,148 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-05 23:12:31,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:12:31,153 INFO L225 Difference]: With dead ends: 2026 [2020-10-05 23:12:31,153 INFO L226 Difference]: Without dead ends: 1908 [2020-10-05 23:12:31,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-05 23:12:31,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2020-10-05 23:12:31,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1746. [2020-10-05 23:12:31,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1746 states. [2020-10-05 23:12:31,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 4509 transitions. [2020-10-05 23:12:31,199 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 4509 transitions. Word has length 20 [2020-10-05 23:12:31,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:12:31,199 INFO L479 AbstractCegarLoop]: Abstraction has 1746 states and 4509 transitions. [2020-10-05 23:12:31,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 23:12:31,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 4509 transitions. [2020-10-05 23:12:31,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-05 23:12:31,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:31,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:12:31,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 23:12:31,202 INFO L427 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-05 23:12:31,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:31,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1612003185, now seen corresponding path program 2 times [2020-10-05 23:12:31,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:31,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719102863] [2020-10-05 23:12:31,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:12:31,239 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:12:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:12:31,255 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:12:31,288 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-05 23:12:31,289 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-05 23:12:31,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-05 23:12:31,289 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-05 23:12:31,295 WARN L123 codingBacktranslator]: Skipped backtranslation of ATE [279] [279] L697-->L697-3: Formula: (= ~y~0_In-713547411 ~x~0_In-713547411) InVars {~y~0=~y~0_In-713547411, ~x~0=~x~0_In-713547411} OutVars{~y~0=~y~0_In-713547411, ~x~0=~x~0_In-713547411} AuxVars[] AssignedVars[] because there is no mapped edge [2020-10-05 23:12:31,303 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-05 23:12:31,303 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-05 23:12:31,305 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-05 23:12:31,305 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-05 23:12:31,306 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-05 23:12:31,306 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-05 23:12:31,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 11:12:31 BasicIcfg [2020-10-05 23:12:31,337 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 23:12:31,339 INFO L168 Benchmark]: Toolchain (without parser) took 5799.55 ms. Allocated memory was 138.4 MB in the beginning and 308.3 MB in the end (delta: 169.9 MB). Free memory was 100.8 MB in the beginning and 172.6 MB in the end (delta: -71.8 MB). Peak memory consumption was 98.1 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:31,340 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-05 23:12:31,341 INFO L168 Benchmark]: CACSL2BoogieTranslator took 666.61 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 100.6 MB in the beginning and 161.6 MB in the end (delta: -61.0 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:31,342 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.20 ms. Allocated memory is still 201.9 MB. Free memory was 161.6 MB in the beginning and 159.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:31,342 INFO L168 Benchmark]: Boogie Preprocessor took 27.12 ms. Allocated memory is still 201.9 MB. Free memory was 159.5 MB in the beginning and 158.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:31,343 INFO L168 Benchmark]: RCFGBuilder took 543.21 ms. Allocated memory is still 201.9 MB. Free memory was 158.1 MB in the beginning and 128.4 MB in the end (delta: 29.7 MB). Peak memory consumption was 29.7 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:31,344 INFO L168 Benchmark]: TraceAbstraction took 4506.64 ms. Allocated memory was 201.9 MB in the beginning and 308.3 MB in the end (delta: 106.4 MB). Free memory was 127.7 MB in the beginning and 172.6 MB in the end (delta: -44.9 MB). Peak memory consumption was 61.5 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:31,348 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 666.61 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 100.6 MB in the beginning and 161.6 MB in the end (delta: -61.0 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.20 ms. Allocated memory is still 201.9 MB. Free memory was 161.6 MB in the beginning and 159.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.12 ms. Allocated memory is still 201.9 MB. Free memory was 159.5 MB in the beginning and 158.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 543.21 ms. Allocated memory is still 201.9 MB. Free memory was 158.1 MB in the beginning and 128.4 MB in the end (delta: 29.7 MB). Peak memory consumption was 29.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4506.64 ms. Allocated memory was 201.9 MB in the beginning and 308.3 MB in the end (delta: 106.4 MB). Free memory was 127.7 MB in the beginning and 172.6 MB in the end (delta: -44.9 MB). Peak memory consumption was 61.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 101 ProgramPointsBefore, 59 ProgramPointsAfterwards, 102 TransitionsBefore, 59 TransitionsAfterwards, 2626 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 1 ChoiceCompositions, 1035 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 8300 CheckedPairsTotal, 46 TotalNumberOfCompositions - CounterExampleResult [Line: 697]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L677] 0 int w=0, r=0, x, y; [L703] 0 pthread_t t1, t2, t3, t4; [L704] FCALL, FORK 0 pthread_create(&t1, 0, writer, 0) VAL [r=0, w=0, x=0, y=0] [L705] FCALL, FORK 0 pthread_create(&t2, 0, reader, 0) VAL [r=0, w=0, x=0, y=0] [L693] 2 int l; [L694] CALL 2 __VERIFIER_atomic_take_read_lock() [L683] CALL 2 assume_abort_if_not(w==0) [L3] COND TRUE 2 !cond [L683] RET 2 assume_abort_if_not(w==0) [L684] 2 r = r+1 [L694] RET 2 __VERIFIER_atomic_take_read_lock() [L695] 2 l = x VAL [r=1, w=0, x=0, y=0] [L696] 2 y = l VAL [r=1, w=0, x=0, y=0] [L698] 2 l = r-1 VAL [r=1, w=0, x=0, y=0] [L706] FCALL, FORK 0 pthread_create(&t3, 0, writer, 0) VAL [r=1, w=0, x=0, y=0] [L707] FCALL, FORK 0 pthread_create(&t4, 0, reader, 0) VAL [r=1, w=0, x=0, y=0] [L693] 4 int l; [L694] CALL 4 __VERIFIER_atomic_take_read_lock() [L683] CALL 4 assume_abort_if_not(w==0) [L3] COND TRUE 4 !cond [L683] RET 4 assume_abort_if_not(w==0) [L684] 4 r = r+1 [L694] RET 4 __VERIFIER_atomic_take_read_lock() [L699] 2 r = l [L700] 2 return 0; [L687] CALL 1 __VERIFIER_atomic_take_write_lock() [L679] CALL 1 assume_abort_if_not(w==0 && r==0) [L3] COND FALSE 1 !(!cond) [L679] RET 1 assume_abort_if_not(w==0 && r==0) [L680] 1 w = 1 [L687] RET 1 __VERIFIER_atomic_take_write_lock() [L695] 4 l = x VAL [r=0, w=1, x=0, y=0] [L696] 4 y = l VAL [r=0, w=1, x=0, y=0] [L688] 1 x = 3 VAL [r=0, w=1, x=3, y=0] [L697] COND TRUE 4 !(y == x) [L697] 4 __VERIFIER_error() VAL [r=0, w=1, x=3, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 439 SDtfs, 411 SDslu, 532 SDs, 0 SdLazy, 150 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5928occurred 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: 0.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 3984 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 1515 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...