/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/safe020_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 22:39:24,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 22:39:24,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 22:39:24,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 22:39:24,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 22:39:24,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 22:39:24,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 22:39:24,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 22:39:24,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 22:39:24,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 22:39:24,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 22:39:24,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 22:39:24,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 22:39:24,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 22:39:24,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 22:39:24,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 22:39:24,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 22:39:24,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 22:39:24,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 22:39:24,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 22:39:24,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 22:39:24,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 22:39:24,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 22:39:24,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 22:39:24,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-27 22:39:24,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-27 22:39:24,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-27 22:39:24,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-27 22:39:24,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-27 22:39:24,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-27 22:39:24,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 22:39:24,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 22:39:24,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 22:39:24,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 22:39:24,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 22:39:24,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 22:39:24,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 22:39:24,494 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 22:39:24,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 22:39:24,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 22:39:24,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 22:39:24,496 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 22:39:24,522 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 22:39:24,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 22:39:24,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 22:39:24,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 22:39:24,525 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 22:39:24,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 22:39:24,525 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 22:39:24,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 22:39:24,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 22:39:24,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 22:39:24,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 22:39:24,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 22:39:24,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 22:39:24,527 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 22:39:24,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 22:39:24,528 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 22:39:24,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 22:39:24,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 22:39:24,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 22:39:24,528 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 22:39:24,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 22:39:24,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 22:39:24,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 22:39:24,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 22:39:24,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 22:39:24,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 22:39:24,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 22:39:24,530 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2019-12-27 22:39:24,530 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-27 22:39:24,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 22:39:24,531 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2019-12-27 22:39:24,532 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 22:39:24,835 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 22:39:24,849 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 22:39:24,852 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 22:39:24,854 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 22:39:24,854 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 22:39:24,855 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2019-12-27 22:39:24,933 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8305e163/c1835f7703e247e1b2b595866638cd20/FLAGe87d0c001 [2019-12-27 22:39:25,444 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 22:39:25,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2019-12-27 22:39:25,458 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8305e163/c1835f7703e247e1b2b595866638cd20/FLAGe87d0c001 [2019-12-27 22:39:25,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8305e163/c1835f7703e247e1b2b595866638cd20 [2019-12-27 22:39:25,702 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 22:39:25,704 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 22:39:25,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 22:39:25,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 22:39:25,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 22:39:25,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 10:39:25" (1/1) ... [2019-12-27 22:39:25,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29e3bf31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:39:25, skipping insertion in model container [2019-12-27 22:39:25,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 10:39:25" (1/1) ... [2019-12-27 22:39:25,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 22:39:25,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 22:39:26,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 22:39:26,295 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 22:39:26,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 22:39:26,422 INFO L208 MainTranslator]: Completed translation [2019-12-27 22:39:26,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:39:26 WrapperNode [2019-12-27 22:39:26,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 22:39:26,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 22:39:26,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 22:39:26,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 22:39:26,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:39:26" (1/1) ... [2019-12-27 22:39:26,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:39:26" (1/1) ... [2019-12-27 22:39:26,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 22:39:26,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 22:39:26,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 22:39:26,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 22:39:26,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:39:26" (1/1) ... [2019-12-27 22:39:26,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:39:26" (1/1) ... [2019-12-27 22:39:26,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:39:26" (1/1) ... [2019-12-27 22:39:26,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:39:26" (1/1) ... [2019-12-27 22:39:26,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:39:26" (1/1) ... [2019-12-27 22:39:26,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:39:26" (1/1) ... [2019-12-27 22:39:26,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:39:26" (1/1) ... [2019-12-27 22:39:26,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 22:39:26,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 22:39:26,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 22:39:26,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 22:39:26,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:39:26" (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 [2019-12-27 22:39:26,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 22:39:26,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-27 22:39:26,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 22:39:26,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 22:39:26,579 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-27 22:39:26,580 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-27 22:39:26,580 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-27 22:39:26,581 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-27 22:39:26,581 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-27 22:39:26,581 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-27 22:39:26,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-27 22:39:26,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 22:39:26,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 22:39:26,583 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 22:39:26,938 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 22:39:26,939 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-27 22:39:26,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 10:39:26 BoogieIcfgContainer [2019-12-27 22:39:26,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 22:39:26,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 22:39:26,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 22:39:26,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 22:39:26,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 10:39:25" (1/3) ... [2019-12-27 22:39:26,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@215a7ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 10:39:26, skipping insertion in model container [2019-12-27 22:39:26,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 10:39:26" (2/3) ... [2019-12-27 22:39:26,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@215a7ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 10:39:26, skipping insertion in model container [2019-12-27 22:39:26,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 10:39:26" (3/3) ... [2019-12-27 22:39:26,948 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_tso.opt.i [2019-12-27 22:39:26,958 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 22:39:26,959 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 22:39:26,965 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 22:39:26,966 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 22:39:26,997 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:26,997 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:26,997 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:26,998 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:26,998 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:26,999 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:26,999 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:27,000 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:27,000 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:27,000 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:27,000 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:27,001 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:27,001 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:27,001 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:27,002 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:27,002 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:27,002 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:27,003 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:27,007 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:27,007 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:27,007 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:27,008 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:27,013 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:27,014 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:27,014 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:27,014 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:27,024 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:27,024 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:27,024 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:27,025 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 22:39:27,040 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-27 22:39:27,056 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 22:39:27,056 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 22:39:27,056 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 22:39:27,056 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-27 22:39:27,057 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 22:39:27,057 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 22:39:27,057 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 22:39:27,057 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 22:39:27,068 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 53 transitions [2019-12-27 22:39:27,070 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-27 22:39:27,113 INFO L132 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-27 22:39:27,114 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 22:39:27,120 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 21 event pairs. 0/48 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-27 22:39:27,123 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-27 22:39:27,142 INFO L132 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-27 22:39:27,142 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 22:39:27,143 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 21 event pairs. 0/48 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-27 22:39:27,147 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-27 22:39:27,151 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 22:39:28,490 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-12-27 22:39:28,607 INFO L206 etLargeBlockEncoding]: Checked pairs total: 479 [2019-12-27 22:39:28,608 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2019-12-27 22:39:28,611 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-27 22:39:28,621 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-27 22:39:28,623 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-27 22:39:28,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 22:39:28,630 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 22:39:28,631 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 22:39:28,631 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 22:39:28,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 22:39:28,636 INFO L82 PathProgramCache]: Analyzing trace with hash 492740166, now seen corresponding path program 1 times [2019-12-27 22:39:28,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 22:39:28,645 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781308836] [2019-12-27 22:39:28,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 22:39:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 22:39:28,882 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 22:39:28,882 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781308836] [2019-12-27 22:39:28,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 22:39:28,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-27 22:39:28,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [374495819] [2019-12-27 22:39:28,885 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 22:39:28,891 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 22:39:28,906 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 9 states and 8 transitions. [2019-12-27 22:39:28,906 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 22:39:28,910 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 22:39:28,911 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 22:39:28,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 22:39:28,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 22:39:28,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 22:39:28,928 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-27 22:39:28,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 22:39:28,952 INFO L93 Difference]: Finished difference Result 42 states and 84 transitions. [2019-12-27 22:39:28,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 22:39:28,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-27 22:39:28,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 22:39:28,966 INFO L225 Difference]: With dead ends: 42 [2019-12-27 22:39:28,966 INFO L226 Difference]: Without dead ends: 34 [2019-12-27 22:39:28,967 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 22:39:28,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-27 22:39:29,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-27 22:39:29,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-27 22:39:29,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 64 transitions. [2019-12-27 22:39:29,008 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 64 transitions. Word has length 8 [2019-12-27 22:39:29,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 22:39:29,009 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 64 transitions. [2019-12-27 22:39:29,009 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 22:39:29,010 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 64 transitions. [2019-12-27 22:39:29,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 22:39:29,010 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 22:39:29,011 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 22:39:29,011 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 22:39:29,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 22:39:29,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1904869198, now seen corresponding path program 1 times [2019-12-27 22:39:29,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 22:39:29,012 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136599067] [2019-12-27 22:39:29,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 22:39:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 22:39:29,134 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 22:39:29,135 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136599067] [2019-12-27 22:39:29,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 22:39:29,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 22:39:29,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1558372288] [2019-12-27 22:39:29,136 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 22:39:29,138 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 22:39:29,147 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 10 states and 9 transitions. [2019-12-27 22:39:29,148 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 22:39:29,148 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 22:39:29,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 22:39:29,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 22:39:29,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 22:39:29,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 22:39:29,151 INFO L87 Difference]: Start difference. First operand 34 states and 64 transitions. Second operand 4 states. [2019-12-27 22:39:29,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 22:39:29,188 INFO L93 Difference]: Finished difference Result 36 states and 63 transitions. [2019-12-27 22:39:29,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 22:39:29,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-27 22:39:29,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 22:39:29,189 INFO L225 Difference]: With dead ends: 36 [2019-12-27 22:39:29,190 INFO L226 Difference]: Without dead ends: 28 [2019-12-27 22:39:29,190 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 22:39:29,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-27 22:39:29,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-12-27 22:39:29,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-27 22:39:29,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 47 transitions. [2019-12-27 22:39:29,197 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 47 transitions. Word has length 9 [2019-12-27 22:39:29,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 22:39:29,197 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 47 transitions. [2019-12-27 22:39:29,197 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 22:39:29,197 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 47 transitions. [2019-12-27 22:39:29,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 22:39:29,198 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 22:39:29,198 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 22:39:29,199 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 22:39:29,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 22:39:29,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1444336371, now seen corresponding path program 1 times [2019-12-27 22:39:29,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 22:39:29,200 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704764755] [2019-12-27 22:39:29,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 22:39:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 22:39:29,256 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 22:39:29,256 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704764755] [2019-12-27 22:39:29,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 22:39:29,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 22:39:29,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [254610446] [2019-12-27 22:39:29,257 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 22:39:29,258 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 22:39:29,260 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 13 states and 14 transitions. [2019-12-27 22:39:29,260 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 22:39:29,261 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 22:39:29,262 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 22:39:29,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 22:39:29,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 22:39:29,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 22:39:29,263 INFO L87 Difference]: Start difference. First operand 28 states and 47 transitions. Second operand 3 states. [2019-12-27 22:39:29,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 22:39:29,275 INFO L93 Difference]: Finished difference Result 29 states and 46 transitions. [2019-12-27 22:39:29,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 22:39:29,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-27 22:39:29,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 22:39:29,276 INFO L225 Difference]: With dead ends: 29 [2019-12-27 22:39:29,277 INFO L226 Difference]: Without dead ends: 17 [2019-12-27 22:39:29,277 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 22:39:29,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-27 22:39:29,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-27 22:39:29,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-27 22:39:29,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-12-27 22:39:29,280 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2019-12-27 22:39:29,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 22:39:29,281 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-12-27 22:39:29,281 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 22:39:29,281 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-12-27 22:39:29,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 22:39:29,281 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 22:39:29,281 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 22:39:29,282 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 22:39:29,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 22:39:29,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1824813225, now seen corresponding path program 1 times [2019-12-27 22:39:29,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 22:39:29,283 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770706984] [2019-12-27 22:39:29,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 22:39:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 22:39:29,340 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 22:39:29,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770706984] [2019-12-27 22:39:29,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 22:39:29,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 22:39:29,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1880752247] [2019-12-27 22:39:29,341 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 22:39:29,342 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 22:39:29,344 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 14 states and 15 transitions. [2019-12-27 22:39:29,344 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 22:39:29,345 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 22:39:29,345 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 22:39:29,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 22:39:29,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 22:39:29,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 22:39:29,346 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 4 states. [2019-12-27 22:39:29,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 22:39:29,361 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2019-12-27 22:39:29,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 22:39:29,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-27 22:39:29,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 22:39:29,362 INFO L225 Difference]: With dead ends: 16 [2019-12-27 22:39:29,363 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 22:39:29,363 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 22:39:29,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 22:39:29,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 22:39:29,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 22:39:29,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 22:39:29,364 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-27 22:39:29,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 22:39:29,364 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 22:39:29,364 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 22:39:29,364 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 22:39:29,364 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 22:39:29,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 10:39:29 BasicIcfg [2019-12-27 22:39:29,368 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 22:39:29,370 INFO L168 Benchmark]: Toolchain (without parser) took 3666.59 ms. Allocated memory was 136.8 MB in the beginning and 250.6 MB in the end (delta: 113.8 MB). Free memory was 100.2 MB in the beginning and 177.9 MB in the end (delta: -77.7 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. [2019-12-27 22:39:29,371 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-12-27 22:39:29,372 INFO L168 Benchmark]: CACSL2BoogieTranslator took 717.86 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 99.8 MB in the beginning and 157.4 MB in the end (delta: -57.7 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2019-12-27 22:39:29,372 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.09 ms. Allocated memory is still 200.3 MB. Free memory was 157.4 MB in the beginning and 155.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-12-27 22:39:29,373 INFO L168 Benchmark]: Boogie Preprocessor took 26.87 ms. Allocated memory is still 200.3 MB. Free memory was 155.2 MB in the beginning and 153.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-12-27 22:39:29,374 INFO L168 Benchmark]: RCFGBuilder took 425.54 ms. Allocated memory is still 200.3 MB. Free memory was 153.9 MB in the beginning and 133.7 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2019-12-27 22:39:29,375 INFO L168 Benchmark]: TraceAbstraction took 2426.96 ms. Allocated memory was 200.3 MB in the beginning and 250.6 MB in the end (delta: 50.3 MB). Free memory was 133.1 MB in the beginning and 177.9 MB in the end (delta: -44.8 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. [2019-12-27 22:39:29,380 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 717.86 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 99.8 MB in the beginning and 157.4 MB in the end (delta: -57.7 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.09 ms. Allocated memory is still 200.3 MB. Free memory was 157.4 MB in the beginning and 155.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.87 ms. Allocated memory is still 200.3 MB. Free memory was 155.2 MB in the beginning and 153.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 425.54 ms. Allocated memory is still 200.3 MB. Free memory was 153.9 MB in the beginning and 133.7 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2426.96 ms. Allocated memory was 200.3 MB in the beginning and 250.6 MB in the end (delta: 50.3 MB). Free memory was 133.1 MB in the beginning and 177.9 MB in the end (delta: -44.8 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 62 ProgramPointsBefore, 21 ProgramPointsAfterwards, 53 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 244 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 479 CheckedPairsTotal, 45 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: 2.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 17 SDslu, 32 SDs, 0 SdLazy, 20 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 676 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...