/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.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:16:09,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:16:09,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:16:09,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:16:09,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:16:09,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:16:09,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:16:09,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:16:09,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:16:09,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:16:09,413 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:16:09,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:16:09,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:16:09,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:16:09,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:16:09,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:16:09,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:16:09,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:16:09,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:16:09,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:16:09,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:16:09,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:16:09,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:16:09,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:16:09,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:16:09,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:16:09,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:16:09,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:16:09,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:16:09,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:16:09,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:16:09,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:16:09,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:16:09,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:16:09,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:16:09,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:16:09,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:16:09,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:16:09,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:16:09,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:16:09,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:16:09,459 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.epf [2020-04-18 02:16:09,487 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:16:09,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:16:09,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:16:09,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:16:09,489 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:16:09,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:16:09,489 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:16:09,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:16:09,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:16:09,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:16:09,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:16:09,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:16:09,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:16:09,492 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:16:09,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:16:09,492 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:16:09,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:16:09,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:16:09,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:16:09,493 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:16:09,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:16:09,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:16:09,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:16:09,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:16:09,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:16:09,494 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:16:09,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:16:09,495 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:16:09,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:16:09,495 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:16:09,775 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:16:09,794 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:16:09,798 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:16:09,800 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:16:09,800 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:16:09,801 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.opt.i [2020-04-18 02:16:09,875 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/463553aa2/2901b5a864f54a9f87a196049dd1e296/FLAG60191f390 [2020-04-18 02:16:10,484 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:16:10,485 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe010_tso.opt.i [2020-04-18 02:16:10,512 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/463553aa2/2901b5a864f54a9f87a196049dd1e296/FLAG60191f390 [2020-04-18 02:16:10,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/463553aa2/2901b5a864f54a9f87a196049dd1e296 [2020-04-18 02:16:10,738 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:16:10,761 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:16:10,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:16:10,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:16:10,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:16:10,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:16:10" (1/1) ... [2020-04-18 02:16:10,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72879572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:16:10, skipping insertion in model container [2020-04-18 02:16:10,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:16:10" (1/1) ... [2020-04-18 02:16:10,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:16:10,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:16:11,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:16:11,323 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:16:11,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:16:11,454 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:16:11,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:16:11 WrapperNode [2020-04-18 02:16:11,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:16:11,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:16:11,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:16:11,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:16:11,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:16:11" (1/1) ... [2020-04-18 02:16:11,497 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:16:11" (1/1) ... [2020-04-18 02:16:11,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:16:11,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:16:11,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:16:11,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:16:11,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:16:11" (1/1) ... [2020-04-18 02:16:11,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:16:11" (1/1) ... [2020-04-18 02:16:11,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:16:11" (1/1) ... [2020-04-18 02:16:11,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:16:11" (1/1) ... [2020-04-18 02:16:11,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:16:11" (1/1) ... [2020-04-18 02:16:11,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:16:11" (1/1) ... [2020-04-18 02:16:11,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:16:11" (1/1) ... [2020-04-18 02:16:11,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:16:11,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:16:11,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:16:11,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:16:11,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:16:11" (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 [2020-04-18 02:16:11,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:16:11,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:16:11,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:16:11,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:16:11,625 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:16:11,626 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:16:11,626 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:16:11,626 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:16:11,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:16:11,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:16:11,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:16:11,628 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 02:16:12,007 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:16:12,007 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:16:12,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:16:12 BoogieIcfgContainer [2020-04-18 02:16:12,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:16:12,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:16:12,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:16:12,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:16:12,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:16:10" (1/3) ... [2020-04-18 02:16:12,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4afc5d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:16:12, skipping insertion in model container [2020-04-18 02:16:12,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:16:11" (2/3) ... [2020-04-18 02:16:12,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4afc5d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:16:12, skipping insertion in model container [2020-04-18 02:16:12,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:16:12" (3/3) ... [2020-04-18 02:16:12,021 INFO L109 eAbstractionObserver]: Analyzing ICFG safe010_tso.opt.i [2020-04-18 02:16:12,031 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:16:12,031 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:16:12,037 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:16:12,038 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:16:12,063 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:12,063 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:12,064 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:12,064 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:12,064 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:12,065 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:12,065 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:12,065 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:12,066 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:12,066 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:12,066 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:12,066 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:12,070 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:12,070 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:12,070 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:12,071 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:12,076 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:12,076 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:12,076 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:12,076 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:12,090 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 02:16:12,107 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:16:12,107 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:16:12,107 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:16:12,107 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:16:12,107 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:16:12,108 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:16:12,108 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:16:12,108 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:16:12,122 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 55 transitions, 120 flow [2020-04-18 02:16:12,124 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-04-18 02:16:12,164 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-04-18 02:16:12,164 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:16:12,169 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 02:16:12,171 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-04-18 02:16:12,189 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-04-18 02:16:12,189 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:16:12,190 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 02:16:12,191 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-04-18 02:16:12,192 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:16:13,537 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1251 [2020-04-18 02:16:13,537 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2020-04-18 02:16:13,541 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-04-18 02:16:13,555 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-04-18 02:16:13,557 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 02:16:13,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 02:16:13,566 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:16:13,567 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-18 02:16:13,568 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:16:13,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:16:13,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1814584925, now seen corresponding path program 1 times [2020-04-18 02:16:13,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:16:13,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883621534] [2020-04-18 02:16:13,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:16:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:16:13,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:16:13,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883621534] [2020-04-18 02:16:13,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:16:13,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:16:13,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942084220] [2020-04-18 02:16:13,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:16:13,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:16:13,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:16:13,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:16:13,816 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-04-18 02:16:13,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:16:13,862 INFO L93 Difference]: Finished difference Result 70 states and 149 transitions. [2020-04-18 02:16:13,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:16:13,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-18 02:16:13,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:16:13,877 INFO L225 Difference]: With dead ends: 70 [2020-04-18 02:16:13,878 INFO L226 Difference]: Without dead ends: 54 [2020-04-18 02:16:13,879 INFO L678 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 [2020-04-18 02:16:13,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-04-18 02:16:13,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-04-18 02:16:13,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-04-18 02:16:13,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 109 transitions. [2020-04-18 02:16:13,920 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 109 transitions. Word has length 6 [2020-04-18 02:16:13,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:16:13,935 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 109 transitions. [2020-04-18 02:16:13,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:16:13,936 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 109 transitions. [2020-04-18 02:16:13,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 02:16:13,938 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:16:13,938 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:16:13,938 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:16:13,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:16:13,939 INFO L82 PathProgramCache]: Analyzing trace with hash 417538412, now seen corresponding path program 1 times [2020-04-18 02:16:13,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:16:13,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692917134] [2020-04-18 02:16:13,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:16:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:16:14,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:16:14,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692917134] [2020-04-18 02:16:14,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:16:14,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:16:14,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330747947] [2020-04-18 02:16:14,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:16:14,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:16:14,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:16:14,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:16:14,023 INFO L87 Difference]: Start difference. First operand 54 states and 109 transitions. Second operand 3 states. [2020-04-18 02:16:14,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:16:14,044 INFO L93 Difference]: Finished difference Result 53 states and 106 transitions. [2020-04-18 02:16:14,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:16:14,046 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-04-18 02:16:14,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:16:14,047 INFO L225 Difference]: With dead ends: 53 [2020-04-18 02:16:14,048 INFO L226 Difference]: Without dead ends: 53 [2020-04-18 02:16:14,050 INFO L678 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 [2020-04-18 02:16:14,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-04-18 02:16:14,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-04-18 02:16:14,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-04-18 02:16:14,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 106 transitions. [2020-04-18 02:16:14,067 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 106 transitions. Word has length 7 [2020-04-18 02:16:14,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:16:14,067 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 106 transitions. [2020-04-18 02:16:14,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:16:14,068 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 106 transitions. [2020-04-18 02:16:14,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:16:14,069 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:16:14,069 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:16:14,069 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:16:14,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:16:14,070 INFO L82 PathProgramCache]: Analyzing trace with hash 58787852, now seen corresponding path program 1 times [2020-04-18 02:16:14,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:16:14,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803176103] [2020-04-18 02:16:14,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:16:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:16:14,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:16:14,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803176103] [2020-04-18 02:16:14,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:16:14,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:16:14,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394668372] [2020-04-18 02:16:14,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:16:14,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:16:14,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:16:14,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:16:14,160 INFO L87 Difference]: Start difference. First operand 53 states and 106 transitions. Second operand 4 states. [2020-04-18 02:16:14,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:16:14,186 INFO L93 Difference]: Finished difference Result 60 states and 113 transitions. [2020-04-18 02:16:14,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:16:14,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-04-18 02:16:14,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:16:14,189 INFO L225 Difference]: With dead ends: 60 [2020-04-18 02:16:14,189 INFO L226 Difference]: Without dead ends: 36 [2020-04-18 02:16:14,190 INFO L678 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 [2020-04-18 02:16:14,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-18 02:16:14,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-18 02:16:14,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-18 02:16:14,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2020-04-18 02:16:14,197 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 8 [2020-04-18 02:16:14,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:16:14,200 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2020-04-18 02:16:14,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:16:14,200 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2020-04-18 02:16:14,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:16:14,201 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:16:14,201 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:16:14,201 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:16:14,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:16:14,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1840071362, now seen corresponding path program 1 times [2020-04-18 02:16:14,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:16:14,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893668759] [2020-04-18 02:16:14,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:16:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:16:14,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:16:14,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893668759] [2020-04-18 02:16:14,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:16:14,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:16:14,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621950652] [2020-04-18 02:16:14,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:16:14,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:16:14,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:16:14,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:16:14,318 INFO L87 Difference]: Start difference. First operand 36 states and 63 transitions. Second operand 4 states. [2020-04-18 02:16:14,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:16:14,359 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2020-04-18 02:16:14,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:16:14,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 02:16:14,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:16:14,361 INFO L225 Difference]: With dead ends: 39 [2020-04-18 02:16:14,361 INFO L226 Difference]: Without dead ends: 29 [2020-04-18 02:16:14,362 INFO L678 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 [2020-04-18 02:16:14,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-04-18 02:16:14,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-04-18 02:16:14,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-04-18 02:16:14,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 44 transitions. [2020-04-18 02:16:14,370 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 44 transitions. Word has length 9 [2020-04-18 02:16:14,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:16:14,370 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 44 transitions. [2020-04-18 02:16:14,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:16:14,371 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 44 transitions. [2020-04-18 02:16:14,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:16:14,372 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:16:14,372 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:16:14,372 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:16:14,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:16:14,373 INFO L82 PathProgramCache]: Analyzing trace with hash 419248155, now seen corresponding path program 1 times [2020-04-18 02:16:14,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:16:14,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922364385] [2020-04-18 02:16:14,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:16:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:16:14,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:16:14,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922364385] [2020-04-18 02:16:14,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:16:14,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:16:14,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596544583] [2020-04-18 02:16:14,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:16:14,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:16:14,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:16:14,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:16:14,470 INFO L87 Difference]: Start difference. First operand 29 states and 44 transitions. Second operand 5 states. [2020-04-18 02:16:14,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:16:14,513 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2020-04-18 02:16:14,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:16:14,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-18 02:16:14,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:16:14,515 INFO L225 Difference]: With dead ends: 27 [2020-04-18 02:16:14,515 INFO L226 Difference]: Without dead ends: 22 [2020-04-18 02:16:14,515 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:16:14,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-04-18 02:16:14,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-04-18 02:16:14,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-04-18 02:16:14,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2020-04-18 02:16:14,518 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 10 [2020-04-18 02:16:14,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:16:14,519 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2020-04-18 02:16:14,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:16:14,519 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-04-18 02:16:14,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:16:14,519 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:16:14,520 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:16:14,520 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:16:14,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:16:14,520 INFO L82 PathProgramCache]: Analyzing trace with hash -830614075, now seen corresponding path program 1 times [2020-04-18 02:16:14,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:16:14,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776142583] [2020-04-18 02:16:14,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:16:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:16:14,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:16:14,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776142583] [2020-04-18 02:16:14,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:16:14,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:16:14,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691634413] [2020-04-18 02:16:14,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:16:14,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:16:14,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:16:14,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:16:14,553 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand 3 states. [2020-04-18 02:16:14,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:16:14,559 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-04-18 02:16:14,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:16:14,561 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-04-18 02:16:14,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:16:14,561 INFO L225 Difference]: With dead ends: 21 [2020-04-18 02:16:14,561 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:16:14,562 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:16:14,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:16:14,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:16:14,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:16:14,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:16:14,563 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-04-18 02:16:14,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:16:14,563 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:16:14,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:16:14,563 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:16:14,563 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:16:14,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:16:14 BasicIcfg [2020-04-18 02:16:14,567 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:16:14,570 INFO L168 Benchmark]: Toolchain (without parser) took 3829.56 ms. Allocated memory was 144.2 MB in the beginning and 249.0 MB in the end (delta: 104.9 MB). Free memory was 99.5 MB in the beginning and 171.6 MB in the end (delta: -72.1 MB). Peak memory consumption was 32.8 MB. Max. memory is 7.1 GB. [2020-04-18 02:16:14,571 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 144.2 MB. Free memory was 119.3 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 02:16:14,572 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.22 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 97.5 MB in the beginning and 158.4 MB in the end (delta: -60.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:16:14,573 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.18 ms. Allocated memory is still 202.4 MB. Free memory was 158.4 MB in the beginning and 156.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:16:14,573 INFO L168 Benchmark]: Boogie Preprocessor took 30.05 ms. Allocated memory is still 202.4 MB. Free memory was 156.4 MB in the beginning and 155.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:16:14,574 INFO L168 Benchmark]: RCFGBuilder took 451.37 ms. Allocated memory is still 202.4 MB. Free memory was 155.0 MB in the beginning and 135.0 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:16:14,575 INFO L168 Benchmark]: TraceAbstraction took 2554.45 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 135.0 MB in the beginning and 171.6 MB in the end (delta: -36.6 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:16:14,580 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 144.2 MB. Free memory was 119.3 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 693.22 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 97.5 MB in the beginning and 158.4 MB in the end (delta: -60.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 74.18 ms. Allocated memory is still 202.4 MB. Free memory was 158.4 MB in the beginning and 156.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.05 ms. Allocated memory is still 202.4 MB. Free memory was 156.4 MB in the beginning and 155.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 451.37 ms. Allocated memory is still 202.4 MB. Free memory was 155.0 MB in the beginning and 135.0 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2554.45 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 135.0 MB in the beginning and 171.6 MB in the end (delta: -36.6 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 60 ProgramPointsBefore, 22 ProgramPointsAfterwards, 55 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 7 FixpointIterations, 12 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 371 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1251 CheckedPairsTotal, 49 TotalNumberOfCompositions - PositiveResult [Line: 7]: 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 3 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 71 SDtfs, 42 SDslu, 61 SDs, 0 SdLazy, 47 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 1116 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...