/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-SemanticLbe-MCR.epf -i ../../../trunk/examples/svcomp/pthread-atomic/dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 15:12:50,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 15:12:50,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 15:12:50,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 15:12:50,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 15:12:50,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 15:12:50,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 15:12:50,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 15:12:50,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 15:12:50,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 15:12:50,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 15:12:50,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 15:12:50,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 15:12:50,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 15:12:50,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 15:12:50,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 15:12:50,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 15:12:50,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 15:12:50,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 15:12:50,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 15:12:50,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 15:12:50,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 15:12:50,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 15:12:50,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 15:12:50,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-27 15:12:50,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-27 15:12:50,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-27 15:12:50,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-27 15:12:50,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-27 15:12:50,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-27 15:12:50,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 15:12:50,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 15:12:50,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 15:12:50,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 15:12:50,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 15:12:50,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 15:12:50,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 15:12:50,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 15:12:50,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 15:12:50,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 15:12:50,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 15:12:50,521 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-SemanticLbe-MCR.epf [2019-12-27 15:12:50,536 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 15:12:50,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 15:12:50,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 15:12:50,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 15:12:50,538 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 15:12:50,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 15:12:50,538 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 15:12:50,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 15:12:50,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 15:12:50,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 15:12:50,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 15:12:50,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 15:12:50,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 15:12:50,540 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 15:12:50,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 15:12:50,540 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 15:12:50,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 15:12:50,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 15:12:50,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 15:12:50,541 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 15:12:50,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 15:12:50,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 15:12:50,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 15:12:50,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 15:12:50,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 15:12:50,542 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 15:12:50,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 15:12:50,543 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2019-12-27 15:12:50,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 15:12:50,543 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2019-12-27 15:12:50,543 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 15:12:50,828 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 15:12:50,849 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 15:12:50,854 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 15:12:50,855 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 15:12:50,856 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 15:12:50,856 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2019-12-27 15:12:50,932 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1aa89b434/23f27302f5334bd98a1ef27ef1e2bcd5/FLAGee9cde815 [2019-12-27 15:12:51,515 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 15:12:51,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i [2019-12-27 15:12:51,527 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1aa89b434/23f27302f5334bd98a1ef27ef1e2bcd5/FLAGee9cde815 [2019-12-27 15:12:51,782 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1aa89b434/23f27302f5334bd98a1ef27ef1e2bcd5 [2019-12-27 15:12:51,793 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 15:12:51,795 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 15:12:51,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 15:12:51,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 15:12:51,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 15:12:51,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 03:12:51" (1/1) ... [2019-12-27 15:12:51,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@164a4878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:12:51, skipping insertion in model container [2019-12-27 15:12:51,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 03:12:51" (1/1) ... [2019-12-27 15:12:51,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 15:12:51,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 15:12:52,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 15:12:52,377 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 15:12:52,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 15:12:52,542 INFO L208 MainTranslator]: Completed translation [2019-12-27 15:12:52,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:12:52 WrapperNode [2019-12-27 15:12:52,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 15:12:52,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 15:12:52,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 15:12:52,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 15:12:52,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:12:52" (1/1) ... [2019-12-27 15:12:52,576 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:12:52" (1/1) ... [2019-12-27 15:12:52,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 15:12:52,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 15:12:52,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 15:12:52,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 15:12:52,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:12:52" (1/1) ... [2019-12-27 15:12:52,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:12:52" (1/1) ... [2019-12-27 15:12:52,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:12:52" (1/1) ... [2019-12-27 15:12:52,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:12:52" (1/1) ... [2019-12-27 15:12:52,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:12:52" (1/1) ... [2019-12-27 15:12:52,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:12:52" (1/1) ... [2019-12-27 15:12:52,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:12:52" (1/1) ... [2019-12-27 15:12:52,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 15:12:52,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 15:12:52,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 15:12:52,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 15:12:52,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:12:52" (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 15:12:52,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-27 15:12:52,697 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2019-12-27 15:12:52,698 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2019-12-27 15:12:52,698 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-12-27 15:12:52,698 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-12-27 15:12:52,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 15:12:52,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 15:12:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 15:12:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 15:12:52,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 15:12:52,701 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 15:12:53,091 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 15:12:53,091 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-12-27 15:12:53,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 03:12:53 BoogieIcfgContainer [2019-12-27 15:12:53,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 15:12:53,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 15:12:53,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 15:12:53,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 15:12:53,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 03:12:51" (1/3) ... [2019-12-27 15:12:53,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127e1a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 03:12:53, skipping insertion in model container [2019-12-27 15:12:53,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:12:52" (2/3) ... [2019-12-27 15:12:53,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127e1a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 03:12:53, skipping insertion in model container [2019-12-27 15:12:53,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 03:12:53" (3/3) ... [2019-12-27 15:12:53,101 INFO L109 eAbstractionObserver]: Analyzing ICFG dekker.i [2019-12-27 15:12:53,111 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 15:12:53,112 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 15:12:53,119 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-12-27 15:12:53,120 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 15:12:53,144 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:53,144 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:53,144 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:53,145 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:53,145 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:53,146 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:53,147 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:53,147 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:53,147 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:53,147 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:53,148 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:53,149 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:53,153 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:53,153 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:53,153 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:53,154 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:53,158 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:53,159 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:53,159 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:53,159 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:12:53,189 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-12-27 15:12:53,207 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 15:12:53,207 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 15:12:53,208 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 15:12:53,208 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-27 15:12:53,208 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 15:12:53,208 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 15:12:53,209 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 15:12:53,209 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 15:12:53,222 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 77 transitions [2019-12-27 15:12:53,224 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 70 places, 77 transitions [2019-12-27 15:12:53,272 INFO L132 PetriNetUnfolder]: 13/77 cut-off events. [2019-12-27 15:12:53,273 INFO L133 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2019-12-27 15:12:53,280 INFO L76 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 77 events. 13/77 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 115 event pairs. 0/63 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2019-12-27 15:12:53,285 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 70 places, 77 transitions [2019-12-27 15:12:53,310 INFO L132 PetriNetUnfolder]: 13/77 cut-off events. [2019-12-27 15:12:53,310 INFO L133 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2019-12-27 15:12:53,312 INFO L76 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 77 events. 13/77 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 115 event pairs. 0/63 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2019-12-27 15:12:53,314 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1428 [2019-12-27 15:12:53,316 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-27 15:12:54,494 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2019-12-27 15:12:54,579 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3136 [2019-12-27 15:12:54,579 INFO L214 etLargeBlockEncoding]: Total number of compositions: 41 [2019-12-27 15:12:54,584 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 45 transitions [2019-12-27 15:12:54,624 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 335 states. [2019-12-27 15:12:54,626 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2019-12-27 15:12:54,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-27 15:12:54,636 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 15:12:54,637 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-27 15:12:54,638 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 15:12:54,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 15:12:54,643 INFO L82 PathProgramCache]: Analyzing trace with hash 307755311, now seen corresponding path program 1 times [2019-12-27 15:12:54,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 15:12:54,656 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721056105] [2019-12-27 15:12:54,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 15:12:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 15:12:54,813 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 15:12:54,814 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721056105] [2019-12-27 15:12:54,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 15:12:54,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 15:12:54,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1431131159] [2019-12-27 15:12:54,817 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 15:12:54,823 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 15:12:54,838 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 6 states and 5 transitions. [2019-12-27 15:12:54,838 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 15:12:54,842 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 15:12:54,843 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-27 15:12:54,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 15:12:54,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-27 15:12:54,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-27 15:12:54,861 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 2 states. [2019-12-27 15:12:54,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 15:12:54,887 INFO L93 Difference]: Finished difference Result 335 states and 891 transitions. [2019-12-27 15:12:54,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-27 15:12:54,889 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-12-27 15:12:54,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 15:12:54,906 INFO L225 Difference]: With dead ends: 335 [2019-12-27 15:12:54,906 INFO L226 Difference]: Without dead ends: 296 [2019-12-27 15:12:54,908 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-27 15:12:54,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2019-12-27 15:12:54,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2019-12-27 15:12:54,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2019-12-27 15:12:54,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 806 transitions. [2019-12-27 15:12:54,986 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 806 transitions. Word has length 5 [2019-12-27 15:12:54,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 15:12:54,988 INFO L462 AbstractCegarLoop]: Abstraction has 296 states and 806 transitions. [2019-12-27 15:12:54,988 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-27 15:12:54,988 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 806 transitions. [2019-12-27 15:12:54,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-27 15:12:54,989 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 15:12:54,989 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-27 15:12:54,990 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 15:12:54,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 15:12:54,990 INFO L82 PathProgramCache]: Analyzing trace with hash 950440607, now seen corresponding path program 1 times [2019-12-27 15:12:54,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 15:12:54,991 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329403505] [2019-12-27 15:12:54,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 15:12:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 15:12:55,068 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 15:12:55,069 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329403505] [2019-12-27 15:12:55,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 15:12:55,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 15:12:55,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [424986064] [2019-12-27 15:12:55,070 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 15:12:55,071 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 15:12:55,072 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 7 states and 6 transitions. [2019-12-27 15:12:55,072 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 15:12:55,072 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 15:12:55,074 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 15:12:55,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 15:12:55,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 15:12:55,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 15:12:55,075 INFO L87 Difference]: Start difference. First operand 296 states and 806 transitions. Second operand 3 states. [2019-12-27 15:12:55,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 15:12:55,111 INFO L93 Difference]: Finished difference Result 313 states and 813 transitions. [2019-12-27 15:12:55,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 15:12:55,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-27 15:12:55,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 15:12:55,115 INFO L225 Difference]: With dead ends: 313 [2019-12-27 15:12:55,116 INFO L226 Difference]: Without dead ends: 250 [2019-12-27 15:12:55,117 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 15:12:55,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2019-12-27 15:12:55,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 232. [2019-12-27 15:12:55,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2019-12-27 15:12:55,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 621 transitions. [2019-12-27 15:12:55,170 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 621 transitions. Word has length 6 [2019-12-27 15:12:55,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 15:12:55,171 INFO L462 AbstractCegarLoop]: Abstraction has 232 states and 621 transitions. [2019-12-27 15:12:55,171 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 15:12:55,171 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 621 transitions. [2019-12-27 15:12:55,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 15:12:55,176 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 15:12:55,176 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 15:12:55,176 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 15:12:55,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 15:12:55,177 INFO L82 PathProgramCache]: Analyzing trace with hash -863522724, now seen corresponding path program 1 times [2019-12-27 15:12:55,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 15:12:55,180 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672095328] [2019-12-27 15:12:55,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 15:12:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 15:12:55,241 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 15:12:55,241 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672095328] [2019-12-27 15:12:55,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 15:12:55,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 15:12:55,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1210417932] [2019-12-27 15:12:55,242 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 15:12:55,243 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 15:12:55,243 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 9 states and 8 transitions. [2019-12-27 15:12:55,244 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 15:12:55,244 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 15:12:55,244 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 15:12:55,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 15:12:55,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 15:12:55,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 15:12:55,245 INFO L87 Difference]: Start difference. First operand 232 states and 621 transitions. Second operand 3 states. [2019-12-27 15:12:55,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 15:12:55,265 INFO L93 Difference]: Finished difference Result 225 states and 583 transitions. [2019-12-27 15:12:55,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 15:12:55,265 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-27 15:12:55,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 15:12:55,267 INFO L225 Difference]: With dead ends: 225 [2019-12-27 15:12:55,267 INFO L226 Difference]: Without dead ends: 156 [2019-12-27 15:12:55,268 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 15:12:55,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2019-12-27 15:12:55,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2019-12-27 15:12:55,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-12-27 15:12:55,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 408 transitions. [2019-12-27 15:12:55,278 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 408 transitions. Word has length 8 [2019-12-27 15:12:55,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 15:12:55,278 INFO L462 AbstractCegarLoop]: Abstraction has 156 states and 408 transitions. [2019-12-27 15:12:55,278 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 15:12:55,278 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 408 transitions. [2019-12-27 15:12:55,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 15:12:55,280 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 15:12:55,280 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 15:12:55,281 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 15:12:55,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 15:12:55,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1690923042, now seen corresponding path program 1 times [2019-12-27 15:12:55,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 15:12:55,282 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54707112] [2019-12-27 15:12:55,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 15:12:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 15:12:55,335 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 15:12:55,336 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54707112] [2019-12-27 15:12:55,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 15:12:55,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 15:12:55,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [918396909] [2019-12-27 15:12:55,337 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 15:12:55,338 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 15:12:55,339 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 15 states and 16 transitions. [2019-12-27 15:12:55,339 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 15:12:55,339 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 15:12:55,340 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 15:12:55,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 15:12:55,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 15:12:55,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 15:12:55,341 INFO L87 Difference]: Start difference. First operand 156 states and 408 transitions. Second operand 3 states. [2019-12-27 15:12:55,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 15:12:55,360 INFO L93 Difference]: Finished difference Result 156 states and 398 transitions. [2019-12-27 15:12:55,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 15:12:55,361 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-12-27 15:12:55,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 15:12:55,363 INFO L225 Difference]: With dead ends: 156 [2019-12-27 15:12:55,363 INFO L226 Difference]: Without dead ends: 136 [2019-12-27 15:12:55,363 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 15:12:55,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2019-12-27 15:12:55,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2019-12-27 15:12:55,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-12-27 15:12:55,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 340 transitions. [2019-12-27 15:12:55,370 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 340 transitions. Word has length 11 [2019-12-27 15:12:55,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 15:12:55,371 INFO L462 AbstractCegarLoop]: Abstraction has 136 states and 340 transitions. [2019-12-27 15:12:55,371 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 15:12:55,371 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 340 transitions. [2019-12-27 15:12:55,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 15:12:55,373 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 15:12:55,373 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 15:12:55,373 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 15:12:55,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 15:12:55,374 INFO L82 PathProgramCache]: Analyzing trace with hash -535888112, now seen corresponding path program 2 times [2019-12-27 15:12:55,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 15:12:55,374 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003483494] [2019-12-27 15:12:55,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 15:12:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 15:12:55,424 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 15:12:55,424 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003483494] [2019-12-27 15:12:55,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 15:12:55,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 15:12:55,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [557567353] [2019-12-27 15:12:55,425 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 15:12:55,426 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 15:12:55,428 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 21 states and 28 transitions. [2019-12-27 15:12:55,428 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 15:12:55,432 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 3 times. [2019-12-27 15:12:55,432 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 15:12:55,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 15:12:55,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 15:12:55,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 15:12:55,433 INFO L87 Difference]: Start difference. First operand 136 states and 340 transitions. Second operand 3 states. [2019-12-27 15:12:55,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 15:12:55,454 INFO L93 Difference]: Finished difference Result 86 states and 251 transitions. [2019-12-27 15:12:55,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 15:12:55,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-12-27 15:12:55,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 15:12:55,458 INFO L225 Difference]: With dead ends: 86 [2019-12-27 15:12:55,458 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 15:12:55,458 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 15:12:55,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 15:12:55,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 15:12:55,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 15:12:55,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 15:12:55,459 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-27 15:12:55,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 15:12:55,460 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 15:12:55,460 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 15:12:55,460 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 15:12:55,460 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 15:12:55,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 03:12:55 BasicIcfg [2019-12-27 15:12:55,464 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 15:12:55,474 INFO L168 Benchmark]: Toolchain (without parser) took 3671.71 ms. Allocated memory was 136.3 MB in the beginning and 253.8 MB in the end (delta: 117.4 MB). Free memory was 99.7 MB in the beginning and 190.8 MB in the end (delta: -91.1 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2019-12-27 15:12:55,475 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 136.3 MB. Free memory is still 119.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-12-27 15:12:55,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 744.10 ms. Allocated memory was 136.3 MB in the beginning and 200.8 MB in the end (delta: 64.5 MB). Free memory was 99.3 MB in the beginning and 157.6 MB in the end (delta: -58.3 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2019-12-27 15:12:55,477 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.94 ms. Allocated memory is still 200.8 MB. Free memory was 157.6 MB in the beginning and 155.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-27 15:12:55,478 INFO L168 Benchmark]: Boogie Preprocessor took 27.25 ms. Allocated memory is still 200.8 MB. Free memory was 155.6 MB in the beginning and 154.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. [2019-12-27 15:12:55,479 INFO L168 Benchmark]: RCFGBuilder took 466.66 ms. Allocated memory is still 200.8 MB. Free memory was 154.6 MB in the beginning and 132.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2019-12-27 15:12:55,480 INFO L168 Benchmark]: TraceAbstraction took 2370.91 ms. Allocated memory was 200.8 MB in the beginning and 253.8 MB in the end (delta: 53.0 MB). Free memory was 132.6 MB in the beginning and 190.8 MB in the end (delta: -58.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-12-27 15:12:55,491 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 136.3 MB. Free memory is still 119.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 744.10 ms. Allocated memory was 136.3 MB in the beginning and 200.8 MB in the end (delta: 64.5 MB). Free memory was 99.3 MB in the beginning and 157.6 MB in the end (delta: -58.3 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 53.94 ms. Allocated memory is still 200.8 MB. Free memory was 157.6 MB in the beginning and 155.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.25 ms. Allocated memory is still 200.8 MB. Free memory was 155.6 MB in the beginning and 154.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 466.66 ms. Allocated memory is still 200.8 MB. Free memory was 154.6 MB in the beginning and 132.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2370.91 ms. Allocated memory was 200.8 MB in the beginning and 253.8 MB in the end (delta: 53.0 MB). Free memory was 132.6 MB in the beginning and 190.8 MB in the end (delta: -58.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 70 ProgramPointsBefore, 39 ProgramPointsAfterwards, 77 TransitionsBefore, 45 TransitionsAfterwards, 1428 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 605 VarBasedMoverChecksPositive, 60 VarBasedMoverChecksNegative, 39 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 3136 CheckedPairsTotal, 41 TotalNumberOfCompositions - PositiveResult [Line: 702]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 687]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 64 locations, 2 error locations. Result: SAFE, OverallTime: 2.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 199 SDtfs, 80 SDslu, 68 SDs, 0 SdLazy, 28 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=335occurred 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 454 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...