/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-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 03:18:17,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 03:18:17,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 03:18:17,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 03:18:17,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 03:18:17,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 03:18:17,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 03:18:17,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 03:18:17,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 03:18:17,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 03:18:17,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 03:18:17,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 03:18:17,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 03:18:17,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 03:18:17,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 03:18:17,622 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 03:18:17,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 03:18:17,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 03:18:17,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 03:18:17,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 03:18:17,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 03:18:17,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 03:18:17,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 03:18:17,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 03:18:17,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 03:18:17,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 03:18:17,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 03:18:17,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 03:18:17,637 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 03:18:17,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 03:18:17,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 03:18:17,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 03:18:17,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 03:18:17,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 03:18:17,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 03:18:17,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 03:18:17,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 03:18:17,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 03:18:17,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 03:18:17,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 03:18:17,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 03:18:17,644 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-NoLbe.epf [2020-04-18 03:18:17,659 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 03:18:17,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 03:18:17,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 03:18:17,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 03:18:17,663 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 03:18:17,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 03:18:17,664 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 03:18:17,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 03:18:17,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 03:18:17,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 03:18:17,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 03:18:17,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 03:18:17,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 03:18:17,665 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 03:18:17,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 03:18:17,666 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 03:18:17,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 03:18:17,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 03:18:17,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 03:18:17,666 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 03:18:17,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 03:18:17,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 03:18:17,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 03:18:17,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 03:18:17,668 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 03:18:17,668 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 03:18:17,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 03:18:17,669 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 03:18:17,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 03:18:17,670 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 03:18:17,968 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 03:18:17,987 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 03:18:17,991 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 03:18:17,992 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 03:18:17,993 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 03:18:17,994 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i [2020-04-18 03:18:18,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54f59ef4e/b3f2e0806974412293aff7a0756d92dc/FLAGdf49c578e [2020-04-18 03:18:18,623 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 03:18:18,624 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i [2020-04-18 03:18:18,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54f59ef4e/b3f2e0806974412293aff7a0756d92dc/FLAGdf49c578e [2020-04-18 03:18:18,919 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54f59ef4e/b3f2e0806974412293aff7a0756d92dc [2020-04-18 03:18:18,929 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 03:18:18,945 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 03:18:18,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 03:18:18,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 03:18:18,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 03:18:18,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:18:18" (1/1) ... [2020-04-18 03:18:18,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ed76e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:18, skipping insertion in model container [2020-04-18 03:18:18,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:18:18" (1/1) ... [2020-04-18 03:18:18,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 03:18:19,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 03:18:19,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 03:18:19,497 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 03:18:19,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 03:18:19,636 INFO L208 MainTranslator]: Completed translation [2020-04-18 03:18:19,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:19 WrapperNode [2020-04-18 03:18:19,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 03:18:19,637 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 03:18:19,638 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 03:18:19,638 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 03:18:19,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:19" (1/1) ... [2020-04-18 03:18:19,681 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:19" (1/1) ... [2020-04-18 03:18:19,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 03:18:19,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 03:18:19,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 03:18:19,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 03:18:19,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:19" (1/1) ... [2020-04-18 03:18:19,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:19" (1/1) ... [2020-04-18 03:18:19,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:19" (1/1) ... [2020-04-18 03:18:19,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:19" (1/1) ... [2020-04-18 03:18:19,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:19" (1/1) ... [2020-04-18 03:18:19,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:19" (1/1) ... [2020-04-18 03:18:19,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:19" (1/1) ... [2020-04-18 03:18:19,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 03:18:19,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 03:18:19,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 03:18:19,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 03:18:19,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:19" (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 03:18:19,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-18 03:18:19,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 03:18:19,793 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2020-04-18 03:18:19,793 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2020-04-18 03:18:19,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 03:18:19,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 03:18:19,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 03:18:19,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 03:18:19,794 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2020-04-18 03:18:19,794 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2020-04-18 03:18:19,796 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 03:18:20,319 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 03:18:20,320 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-04-18 03:18:20,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:18:20 BoogieIcfgContainer [2020-04-18 03:18:20,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 03:18:20,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 03:18:20,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 03:18:20,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 03:18:20,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:18:18" (1/3) ... [2020-04-18 03:18:20,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a51afcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:18:20, skipping insertion in model container [2020-04-18 03:18:20,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:19" (2/3) ... [2020-04-18 03:18:20,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a51afcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:18:20, skipping insertion in model container [2020-04-18 03:18:20,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:18:20" (3/3) ... [2020-04-18 03:18:20,334 INFO L109 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2020-04-18 03:18:20,346 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 03:18:20,346 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 03:18:20,355 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 03:18:20,357 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 03:18:20,400 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,400 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,400 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,401 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,402 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,402 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,402 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,403 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,403 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,403 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,404 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,404 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,404 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,406 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,406 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,406 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,406 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,407 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,407 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,407 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,407 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,408 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,408 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,408 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,409 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,409 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,410 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,410 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,410 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,410 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,410 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,411 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,411 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,411 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,412 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,412 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,412 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,412 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,413 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,413 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,415 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,415 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,422 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,423 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,423 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,423 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,424 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,424 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,427 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,427 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,428 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,428 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,428 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,428 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,428 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,432 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,433 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,433 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,433 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,433 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,433 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,436 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,436 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,436 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,437 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,437 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,437 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,437 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:20,478 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-04-18 03:18:20,497 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 03:18:20,498 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 03:18:20,498 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 03:18:20,498 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 03:18:20,498 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 03:18:20,498 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 03:18:20,499 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 03:18:20,499 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 03:18:20,514 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 101 places, 102 transitions, 272 flow [2020-04-18 03:18:24,077 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 39862 states. [2020-04-18 03:18:24,080 INFO L276 IsEmpty]: Start isEmpty. Operand 39862 states. [2020-04-18 03:18:24,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:18:24,091 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:24,092 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:24,093 INFO L427 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:18:24,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:24,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1640140313, now seen corresponding path program 1 times [2020-04-18 03:18:24,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:24,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530381282] [2020-04-18 03:18:24,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:24,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:24,362 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 03:18:24,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530381282] [2020-04-18 03:18:24,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:18:24,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 03:18:24,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039691875] [2020-04-18 03:18:24,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 03:18:24,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:24,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 03:18:24,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 03:18:24,388 INFO L87 Difference]: Start difference. First operand 39862 states. Second operand 4 states. [2020-04-18 03:18:27,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:27,139 INFO L93 Difference]: Finished difference Result 74813 states and 291136 transitions. [2020-04-18 03:18:27,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 03:18:27,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-04-18 03:18:27,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:27,623 INFO L225 Difference]: With dead ends: 74813 [2020-04-18 03:18:27,623 INFO L226 Difference]: Without dead ends: 54951 [2020-04-18 03:18:27,625 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 03:18:28,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54951 states. [2020-04-18 03:18:29,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54951 to 35490. [2020-04-18 03:18:29,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35490 states. [2020-04-18 03:18:30,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35490 states to 35490 states and 139095 transitions. [2020-04-18 03:18:30,016 INFO L78 Accepts]: Start accepts. Automaton has 35490 states and 139095 transitions. Word has length 25 [2020-04-18 03:18:30,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:30,017 INFO L479 AbstractCegarLoop]: Abstraction has 35490 states and 139095 transitions. [2020-04-18 03:18:30,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 03:18:30,018 INFO L276 IsEmpty]: Start isEmpty. Operand 35490 states and 139095 transitions. [2020-04-18 03:18:30,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-04-18 03:18:30,028 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:30,028 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:30,028 INFO L427 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:18:30,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:30,029 INFO L82 PathProgramCache]: Analyzing trace with hash 978927101, now seen corresponding path program 1 times [2020-04-18 03:18:30,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:30,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840316083] [2020-04-18 03:18:30,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:30,177 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 03:18:30,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840316083] [2020-04-18 03:18:30,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:18:30,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:18:30,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949860738] [2020-04-18 03:18:30,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 03:18:30,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:30,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 03:18:30,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 03:18:30,182 INFO L87 Difference]: Start difference. First operand 35490 states and 139095 transitions. Second operand 3 states. [2020-04-18 03:18:30,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:30,641 INFO L93 Difference]: Finished difference Result 33228 states and 125122 transitions. [2020-04-18 03:18:30,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 03:18:30,642 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-04-18 03:18:30,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:30,841 INFO L225 Difference]: With dead ends: 33228 [2020-04-18 03:18:30,841 INFO L226 Difference]: Without dead ends: 32796 [2020-04-18 03:18:30,842 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 03:18:32,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32796 states. [2020-04-18 03:18:33,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32796 to 32796. [2020-04-18 03:18:33,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32796 states. [2020-04-18 03:18:33,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32796 states to 32796 states and 123478 transitions. [2020-04-18 03:18:33,795 INFO L78 Accepts]: Start accepts. Automaton has 32796 states and 123478 transitions. Word has length 28 [2020-04-18 03:18:33,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:33,795 INFO L479 AbstractCegarLoop]: Abstraction has 32796 states and 123478 transitions. [2020-04-18 03:18:33,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 03:18:33,795 INFO L276 IsEmpty]: Start isEmpty. Operand 32796 states and 123478 transitions. [2020-04-18 03:18:33,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-04-18 03:18:33,797 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:33,798 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:33,798 INFO L427 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:18:33,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:33,798 INFO L82 PathProgramCache]: Analyzing trace with hash -176867335, now seen corresponding path program 2 times [2020-04-18 03:18:33,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:33,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999601556] [2020-04-18 03:18:33,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:33,887 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 03:18:33,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999601556] [2020-04-18 03:18:33,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:18:33,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 03:18:33,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825394460] [2020-04-18 03:18:33,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 03:18:33,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:33,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 03:18:33,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 03:18:33,889 INFO L87 Difference]: Start difference. First operand 32796 states and 123478 transitions. Second operand 4 states. [2020-04-18 03:18:34,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:34,214 INFO L93 Difference]: Finished difference Result 43470 states and 157873 transitions. [2020-04-18 03:18:34,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 03:18:34,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-04-18 03:18:34,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:34,462 INFO L225 Difference]: With dead ends: 43470 [2020-04-18 03:18:34,463 INFO L226 Difference]: Without dead ends: 42030 [2020-04-18 03:18:34,463 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 03:18:34,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42030 states. [2020-04-18 03:18:35,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42030 to 29181. [2020-04-18 03:18:35,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29181 states. [2020-04-18 03:18:35,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29181 states to 29181 states and 107514 transitions. [2020-04-18 03:18:35,911 INFO L78 Accepts]: Start accepts. Automaton has 29181 states and 107514 transitions. Word has length 28 [2020-04-18 03:18:35,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:35,911 INFO L479 AbstractCegarLoop]: Abstraction has 29181 states and 107514 transitions. [2020-04-18 03:18:35,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 03:18:35,912 INFO L276 IsEmpty]: Start isEmpty. Operand 29181 states and 107514 transitions. [2020-04-18 03:18:35,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-04-18 03:18:35,919 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:35,919 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:35,919 INFO L427 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:18:35,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:35,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1817030207, now seen corresponding path program 1 times [2020-04-18 03:18:35,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:35,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047673357] [2020-04-18 03:18:35,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:35,991 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 03:18:35,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047673357] [2020-04-18 03:18:35,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:18:35,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 03:18:35,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732899547] [2020-04-18 03:18:35,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 03:18:35,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:35,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 03:18:35,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 03:18:35,995 INFO L87 Difference]: Start difference. First operand 29181 states and 107514 transitions. Second operand 4 states. [2020-04-18 03:18:37,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:37,601 INFO L93 Difference]: Finished difference Result 46416 states and 168721 transitions. [2020-04-18 03:18:37,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 03:18:37,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-04-18 03:18:37,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:37,716 INFO L225 Difference]: With dead ends: 46416 [2020-04-18 03:18:37,716 INFO L226 Difference]: Without dead ends: 37263 [2020-04-18 03:18:37,717 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 03:18:37,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37263 states. [2020-04-18 03:18:38,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37263 to 23091. [2020-04-18 03:18:38,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23091 states. [2020-04-18 03:18:38,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23091 states to 23091 states and 85241 transitions. [2020-04-18 03:18:38,738 INFO L78 Accepts]: Start accepts. Automaton has 23091 states and 85241 transitions. Word has length 31 [2020-04-18 03:18:38,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:38,740 INFO L479 AbstractCegarLoop]: Abstraction has 23091 states and 85241 transitions. [2020-04-18 03:18:38,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 03:18:38,740 INFO L276 IsEmpty]: Start isEmpty. Operand 23091 states and 85241 transitions. [2020-04-18 03:18:38,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 03:18:38,756 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:38,756 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:38,756 INFO L427 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:18:38,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:38,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1878452053, now seen corresponding path program 1 times [2020-04-18 03:18:38,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:38,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2825647] [2020-04-18 03:18:38,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:38,888 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 03:18:38,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2825647] [2020-04-18 03:18:38,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:18:38,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:18:38,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346573044] [2020-04-18 03:18:38,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:18:38,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:38,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:18:38,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:18:38,890 INFO L87 Difference]: Start difference. First operand 23091 states and 85241 transitions. Second operand 5 states. [2020-04-18 03:18:39,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:39,031 INFO L93 Difference]: Finished difference Result 14811 states and 51431 transitions. [2020-04-18 03:18:39,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 03:18:39,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-04-18 03:18:39,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:39,073 INFO L225 Difference]: With dead ends: 14811 [2020-04-18 03:18:39,074 INFO L226 Difference]: Without dead ends: 14811 [2020-04-18 03:18:39,074 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:18:39,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14811 states. [2020-04-18 03:18:39,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14811 to 13659. [2020-04-18 03:18:39,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13659 states. [2020-04-18 03:18:39,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13659 states to 13659 states and 47399 transitions. [2020-04-18 03:18:39,440 INFO L78 Accepts]: Start accepts. Automaton has 13659 states and 47399 transitions. Word has length 37 [2020-04-18 03:18:39,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:39,441 INFO L479 AbstractCegarLoop]: Abstraction has 13659 states and 47399 transitions. [2020-04-18 03:18:39,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:18:39,441 INFO L276 IsEmpty]: Start isEmpty. Operand 13659 states and 47399 transitions. [2020-04-18 03:18:39,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 03:18:39,463 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:39,463 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:39,463 INFO L427 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:18:39,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:39,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1903400022, now seen corresponding path program 1 times [2020-04-18 03:18:39,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:39,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891525583] [2020-04-18 03:18:39,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:39,583 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 03:18:39,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891525583] [2020-04-18 03:18:39,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:18:39,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:18:39,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227768771] [2020-04-18 03:18:39,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:18:39,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:39,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:18:39,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:18:39,586 INFO L87 Difference]: Start difference. First operand 13659 states and 47399 transitions. Second operand 7 states. [2020-04-18 03:18:39,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:39,813 INFO L93 Difference]: Finished difference Result 15531 states and 53579 transitions. [2020-04-18 03:18:39,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 03:18:39,814 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-04-18 03:18:39,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:39,846 INFO L225 Difference]: With dead ends: 15531 [2020-04-18 03:18:39,847 INFO L226 Difference]: Without dead ends: 13902 [2020-04-18 03:18:39,847 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:18:39,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13902 states. [2020-04-18 03:18:40,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13902 to 12750. [2020-04-18 03:18:40,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12750 states. [2020-04-18 03:18:40,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12750 states to 12750 states and 44264 transitions. [2020-04-18 03:18:40,335 INFO L78 Accepts]: Start accepts. Automaton has 12750 states and 44264 transitions. Word has length 42 [2020-04-18 03:18:40,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:40,335 INFO L479 AbstractCegarLoop]: Abstraction has 12750 states and 44264 transitions. [2020-04-18 03:18:40,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:18:40,335 INFO L276 IsEmpty]: Start isEmpty. Operand 12750 states and 44264 transitions. [2020-04-18 03:18:40,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 03:18:40,349 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:40,350 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:40,350 INFO L427 AbstractCegarLoop]: === Iteration 7 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:18:40,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:40,350 INFO L82 PathProgramCache]: Analyzing trace with hash -832827016, now seen corresponding path program 2 times [2020-04-18 03:18:40,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:40,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32682845] [2020-04-18 03:18:40,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 03:18:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 03:18:40,414 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 03:18:40,414 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 03:18:40,432 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-04-18 03:18:40,433 WARN L224 RCFGBacktranslator]: unable to determine which branch was taken at C: __VERIFIER_atomic_take_read_lock() [694] [2020-04-18 03:18:40,434 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-04-18 03:18:40,434 WARN L224 RCFGBacktranslator]: unable to determine which branch was taken at C: __VERIFIER_atomic_take_read_lock() [694] [2020-04-18 03:18:40,434 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-04-18 03:18:40,435 WARN L224 RCFGBacktranslator]: unable to determine which branch was taken at C: __VERIFIER_atomic_take_write_lock() [687] [2020-04-18 03:18:40,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:18:40 BasicIcfg [2020-04-18 03:18:40,472 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 03:18:40,475 INFO L168 Benchmark]: Toolchain (without parser) took 21544.17 ms. Allocated memory was 136.8 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 100.0 MB in the beginning and 835.9 MB in the end (delta: -736.0 MB). Peak memory consumption was 405.4 MB. Max. memory is 7.1 GB. [2020-04-18 03:18:40,476 INFO L168 Benchmark]: CDTParser took 1.69 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 03:18:40,477 INFO L168 Benchmark]: CACSL2BoogieTranslator took 690.95 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 98.0 MB in the beginning and 159.5 MB in the end (delta: -61.4 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-04-18 03:18:40,478 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.01 ms. Allocated memory is still 200.8 MB. Free memory was 159.5 MB in the beginning and 157.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 03:18:40,479 INFO L168 Benchmark]: Boogie Preprocessor took 24.79 ms. Allocated memory is still 200.8 MB. Free memory was 157.4 MB in the beginning and 156.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 03:18:40,479 INFO L168 Benchmark]: RCFGBuilder took 593.63 ms. Allocated memory is still 200.8 MB. Free memory was 156.1 MB in the beginning and 123.9 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. [2020-04-18 03:18:40,480 INFO L168 Benchmark]: TraceAbstraction took 20146.80 ms. Allocated memory was 200.8 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 123.9 MB in the beginning and 835.9 MB in the end (delta: -712.1 MB). Peak memory consumption was 365.4 MB. Max. memory is 7.1 GB. [2020-04-18 03:18:40,485 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.69 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 690.95 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 98.0 MB in the beginning and 159.5 MB in the end (delta: -61.4 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 68.01 ms. Allocated memory is still 200.8 MB. Free memory was 159.5 MB in the beginning and 157.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.79 ms. Allocated memory is still 200.8 MB. Free memory was 157.4 MB in the beginning and 156.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 593.63 ms. Allocated memory is still 200.8 MB. Free memory was 156.1 MB in the beginning and 123.9 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 20146.80 ms. Allocated memory was 200.8 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 123.9 MB in the beginning and 835.9 MB in the end (delta: -712.1 MB). Peak memory consumption was 365.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 697]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L677] 0 int w=0, r=0, x, y; VAL [r=0, w=0, x=0, y=0] [L703] 0 pthread_t t1, t2, t3, t4; VAL [r=0, w=0, x=0, y=0] [L704] FCALL, FORK 0 pthread_create(&t1, 0, writer, 0) VAL [r=0, w=0, x=0, y=0] [L705] FCALL, FORK 0 pthread_create(&t2, 0, reader, 0) VAL [r=0, w=0, x=0, y=0] [L693] 2 int l; VAL [r=0, w=0, x=0, y=0] [L694] CALL 2 __VERIFIER_atomic_take_read_lock() [L683] CALL 2 assume_abort_if_not(w==0) [L3] COND TRUE 2 !cond [L683] RET 2 assume_abort_if_not(w==0) [L684] 2 r = r+1 [L694] RET 2 __VERIFIER_atomic_take_read_lock() [L695] 2 l = x VAL [r=1, w=0, x=0, y=0] [L696] 2 y = l VAL [r=1, w=0, x=0, y=0] [L697] COND FALSE 2 !(!(y == x)) VAL [r=1, w=0, x=0, y=0] [L698] 2 l = r-1 VAL [r=1, w=0, x=0, y=0] [L706] FCALL, FORK 0 pthread_create(&t3, 0, writer, 0) VAL [r=1, w=0, x=0, y=0] [L707] FCALL, FORK 0 pthread_create(&t4, 0, reader, 0) VAL [r=1, w=0, x=0, y=0] [L693] 4 int l; VAL [r=1, w=0, x=0, y=0] [L694] CALL 4 __VERIFIER_atomic_take_read_lock() [L683] CALL 4 assume_abort_if_not(w==0) [L3] COND TRUE 4 !cond [L683] RET 4 assume_abort_if_not(w==0) [L684] 4 r = r+1 [L694] RET 4 __VERIFIER_atomic_take_read_lock() [L699] 2 r = l VAL [r=0, w=0, x=0, y=0] [L687] CALL 1 __VERIFIER_atomic_take_write_lock() [L679] CALL 1 assume_abort_if_not(w==0 && r==0) [L3] COND TRUE 1 !cond [L679] RET 1 assume_abort_if_not(w==0 && r==0) [L680] 1 w = 1 [L687] RET 1 __VERIFIER_atomic_take_write_lock() [L695] 4 l = x VAL [r=0, w=1, x=0, y=0] [L688] 1 x = 3 VAL [r=0, w=1, x=3, y=0] [L696] 4 y = l VAL [r=0, w=1, x=3, y=0] [L697] COND TRUE 4 !(y == x) VAL [r=0, w=1, x=3, y=0] [L697] 4 __VERIFIER_error() VAL [r=0, w=1, x=3, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.9s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 956 SDtfs, 885 SDslu, 1329 SDs, 0 SdLazy, 244 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39862occurred 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: 8.6s AutomataMinimizationTime, 6 MinimizatonAttempts, 48786 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 233 NumberOfCodeBlocks, 233 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 185 ConstructedInterpolants, 0 QuantifiedInterpolants, 12705 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 incorrect! Received shutdown request...