/usr/bin/java -Xmx16000000000 -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-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 03:28:47,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 03:28:47,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 03:28:47,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 03:28:47,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 03:28:47,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 03:28:47,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 03:28:47,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 03:28:47,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 03:28:47,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 03:28:47,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 03:28:47,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 03:28:47,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 03:28:47,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 03:28:47,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 03:28:47,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 03:28:47,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 03:28:47,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 03:28:47,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 03:28:47,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 03:28:47,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 03:28:47,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 03:28:47,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 03:28:47,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 03:28:47,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 03:28:47,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 03:28:47,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 03:28:47,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 03:28:47,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 03:28:47,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 03:28:47,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 03:28:47,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 03:28:47,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 03:28:47,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 03:28:47,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 03:28:47,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 03:28:47,645 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-PN-SemanticLbe-SemanticLooper.epf [2020-10-16 03:28:47,693 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 03:28:47,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 03:28:47,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 03:28:47,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 03:28:47,698 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 03:28:47,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 03:28:47,699 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 03:28:47,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 03:28:47,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 03:28:47,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 03:28:47,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 03:28:47,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 03:28:47,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 03:28:47,702 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 03:28:47,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 03:28:47,703 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 03:28:47,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 03:28:47,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 03:28:47,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 03:28:47,704 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 03:28:47,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 03:28:47,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 03:28:47,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 03:28:47,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 03:28:47,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 03:28:47,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 03:28:47,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 03:28:47,706 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 03:28:47,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 03:28:48,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 03:28:48,115 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 03:28:48,120 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 03:28:48,122 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 03:28:48,123 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 03:28:48,123 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i [2020-10-16 03:28:48,225 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbf57906d/220191114b3f42058a1a5165ec4abb93/FLAG0dbe150c3 [2020-10-16 03:28:48,897 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 03:28:48,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i [2020-10-16 03:28:48,916 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbf57906d/220191114b3f42058a1a5165ec4abb93/FLAG0dbe150c3 [2020-10-16 03:28:49,244 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbf57906d/220191114b3f42058a1a5165ec4abb93 [2020-10-16 03:28:49,261 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 03:28:49,264 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 03:28:49,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 03:28:49,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 03:28:49,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 03:28:49,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:28:49" (1/1) ... [2020-10-16 03:28:49,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65f1df70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:49, skipping insertion in model container [2020-10-16 03:28:49,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:28:49" (1/1) ... [2020-10-16 03:28:49,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 03:28:49,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 03:28:49,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 03:28:50,009 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 03:28:50,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 03:28:50,193 INFO L208 MainTranslator]: Completed translation [2020-10-16 03:28:50,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:50 WrapperNode [2020-10-16 03:28:50,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 03:28:50,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 03:28:50,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 03:28:50,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 03:28:50,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:50" (1/1) ... [2020-10-16 03:28:50,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:50" (1/1) ... [2020-10-16 03:28:50,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 03:28:50,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 03:28:50,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 03:28:50,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 03:28:50,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:50" (1/1) ... [2020-10-16 03:28:50,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:50" (1/1) ... [2020-10-16 03:28:50,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:50" (1/1) ... [2020-10-16 03:28:50,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:50" (1/1) ... [2020-10-16 03:28:50,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:50" (1/1) ... [2020-10-16 03:28:50,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:50" (1/1) ... [2020-10-16 03:28:50,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:50" (1/1) ... [2020-10-16 03:28:50,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 03:28:50,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 03:28:50,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 03:28:50,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 03:28:50,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 03:28:50,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 03:28:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 03:28:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2020-10-16 03:28:50,388 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2020-10-16 03:28:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 03:28:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 03:28:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 03:28:50,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 03:28:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2020-10-16 03:28:50,389 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2020-10-16 03:28:50,392 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 03:28:51,005 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 03:28:51,006 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-16 03:28:51,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:28:51 BoogieIcfgContainer [2020-10-16 03:28:51,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 03:28:51,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 03:28:51,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 03:28:51,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 03:28:51,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:28:49" (1/3) ... [2020-10-16 03:28:51,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599d3a20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:28:51, skipping insertion in model container [2020-10-16 03:28:51,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:50" (2/3) ... [2020-10-16 03:28:51,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599d3a20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:28:51, skipping insertion in model container [2020-10-16 03:28:51,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:28:51" (3/3) ... [2020-10-16 03:28:51,024 INFO L111 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2020-10-16 03:28:51,040 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 03:28:51,050 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 03:28:51,051 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 03:28:51,089 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,089 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,089 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,090 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,090 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,090 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,091 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,091 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,091 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,092 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,092 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,093 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,093 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,093 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,094 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,094 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,094 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,094 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,095 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,095 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,095 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,095 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,096 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,096 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,096 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,097 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,097 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,097 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,097 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,098 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,098 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,098 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,099 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,099 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,099 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,099 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,100 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,100 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,100 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,100 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,101 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,101 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,106 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,107 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,107 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,107 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,108 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,108 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,116 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,117 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,117 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,117 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,117 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,117 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,118 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,122 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,123 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,123 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,123 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,123 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,124 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,127 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,128 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,128 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,128 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,128 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,128 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,129 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:51,187 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-16 03:28:51,219 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 03:28:51,219 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 03:28:51,219 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 03:28:51,219 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 03:28:51,220 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 03:28:51,220 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 03:28:51,220 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 03:28:51,221 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 03:28:51,245 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 101 places, 102 transitions, 272 flow [2020-10-16 03:28:51,340 INFO L129 PetriNetUnfolder]: 19/136 cut-off events. [2020-10-16 03:28:51,340 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-10-16 03:28:51,351 INFO L80 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 136 events. 19/136 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 327 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 93. Up to 12 conditions per place. [2020-10-16 03:28:51,352 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 102 transitions, 272 flow [2020-10-16 03:28:51,362 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 82 transitions, 212 flow [2020-10-16 03:28:51,367 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 03:28:51,372 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 82 transitions, 212 flow [2020-10-16 03:28:51,377 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 82 transitions, 212 flow [2020-10-16 03:28:51,378 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 82 transitions, 212 flow [2020-10-16 03:28:51,420 INFO L129 PetriNetUnfolder]: 16/120 cut-off events. [2020-10-16 03:28:51,421 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2020-10-16 03:28:51,423 INFO L80 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 120 events. 16/120 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 320 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 93. Up to 12 conditions per place. [2020-10-16 03:28:51,430 INFO L117 LiptonReduction]: Number of co-enabled transitions 2626 [2020-10-16 03:28:53,293 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-10-16 03:28:53,405 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-16 03:28:53,631 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-16 03:28:53,714 INFO L132 LiptonReduction]: Checked pairs total: 18372 [2020-10-16 03:28:53,714 INFO L134 LiptonReduction]: Total number of compositions: 42 [2020-10-16 03:28:53,717 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2354 [2020-10-16 03:28:53,729 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2020-10-16 03:28:53,729 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 03:28:53,729 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:28:53,730 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:28:53,731 INFO L429 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 03:28:53,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:28:53,738 INFO L82 PathProgramCache]: Analyzing trace with hash 169412453, now seen corresponding path program 1 times [2020-10-16 03:28:53,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:28:53,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610146723] [2020-10-16 03:28:53,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:28:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:28:53,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:28:53,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610146723] [2020-10-16 03:28:53,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:28:53,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 03:28:53,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28082346] [2020-10-16 03:28:53,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 03:28:53,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:28:53,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 03:28:53,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 03:28:53,977 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 144 [2020-10-16 03:28:53,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 144 flow. Second operand 4 states. [2020-10-16 03:28:53,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:28:53,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 144 [2020-10-16 03:28:53,986 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:28:54,283 INFO L129 PetriNetUnfolder]: 568/1622 cut-off events. [2020-10-16 03:28:54,284 INFO L130 PetriNetUnfolder]: For 364/364 co-relation queries the response was YES. [2020-10-16 03:28:54,292 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2718 conditions, 1622 events. 568/1622 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 13463 event pairs, 62 based on Foata normal form. 43/1562 useless extension candidates. Maximal degree in co-relation 2331. Up to 440 conditions per place. [2020-10-16 03:28:54,305 INFO L132 encePairwiseOnDemand]: 132/144 looper letters, 26 selfloop transitions, 19 changer transitions 0/77 dead transitions. [2020-10-16 03:28:54,305 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 295 flow [2020-10-16 03:28:54,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 03:28:54,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 03:28:54,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 583 transitions. [2020-10-16 03:28:54,324 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8097222222222222 [2020-10-16 03:28:54,325 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 583 transitions. [2020-10-16 03:28:54,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 583 transitions. [2020-10-16 03:28:54,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:28:54,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 583 transitions. [2020-10-16 03:28:54,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 03:28:54,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 03:28:54,356 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 03:28:54,358 INFO L185 Difference]: Start difference. First operand has 51 places, 48 transitions, 144 flow. Second operand 5 states and 583 transitions. [2020-10-16 03:28:54,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 295 flow [2020-10-16 03:28:54,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 77 transitions, 261 flow, removed 0 selfloop flow, removed 8 redundant places. [2020-10-16 03:28:54,380 INFO L241 Difference]: Finished difference. Result has 51 places, 64 transitions, 252 flow [2020-10-16 03:28:54,384 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=252, PETRI_PLACES=51, PETRI_TRANSITIONS=64} [2020-10-16 03:28:54,385 INFO L342 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2020-10-16 03:28:54,385 INFO L481 AbstractCegarLoop]: Abstraction has has 51 places, 64 transitions, 252 flow [2020-10-16 03:28:54,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 03:28:54,385 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:28:54,385 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:28:54,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 03:28:54,386 INFO L429 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 03:28:54,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:28:54,386 INFO L82 PathProgramCache]: Analyzing trace with hash -403375179, now seen corresponding path program 1 times [2020-10-16 03:28:54,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:28:54,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971650723] [2020-10-16 03:28:54,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:28:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:28:54,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:28:54,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971650723] [2020-10-16 03:28:54,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:28:54,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 03:28:54,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445805830] [2020-10-16 03:28:54,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 03:28:54,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:28:54,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 03:28:54,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 03:28:54,503 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 144 [2020-10-16 03:28:54,503 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 64 transitions, 252 flow. Second operand 4 states. [2020-10-16 03:28:54,503 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:28:54,504 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 144 [2020-10-16 03:28:54,504 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:28:54,981 INFO L129 PetriNetUnfolder]: 1020/3666 cut-off events. [2020-10-16 03:28:54,981 INFO L130 PetriNetUnfolder]: For 960/1245 co-relation queries the response was YES. [2020-10-16 03:28:55,004 INFO L80 FinitePrefix]: Finished finitePrefix Result has 6302 conditions, 3666 events. 1020/3666 cut-off events. For 960/1245 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 40011 event pairs, 89 based on Foata normal form. 108/3579 useless extension candidates. Maximal degree in co-relation 4232. Up to 528 conditions per place. [2020-10-16 03:28:55,028 INFO L132 encePairwiseOnDemand]: 137/144 looper letters, 18 selfloop transitions, 9 changer transitions 0/80 dead transitions. [2020-10-16 03:28:55,029 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 80 transitions, 354 flow [2020-10-16 03:28:55,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 03:28:55,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 03:28:55,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 477 transitions. [2020-10-16 03:28:55,032 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.828125 [2020-10-16 03:28:55,032 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 477 transitions. [2020-10-16 03:28:55,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 477 transitions. [2020-10-16 03:28:55,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:28:55,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 477 transitions. [2020-10-16 03:28:55,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 03:28:55,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 03:28:55,037 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 03:28:55,037 INFO L185 Difference]: Start difference. First operand has 51 places, 64 transitions, 252 flow. Second operand 4 states and 477 transitions. [2020-10-16 03:28:55,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 80 transitions, 354 flow [2020-10-16 03:28:55,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 80 transitions, 354 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 03:28:55,047 INFO L241 Difference]: Finished difference. Result has 57 places, 72 transitions, 320 flow [2020-10-16 03:28:55,048 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=320, PETRI_PLACES=57, PETRI_TRANSITIONS=72} [2020-10-16 03:28:55,052 INFO L342 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2020-10-16 03:28:55,052 INFO L481 AbstractCegarLoop]: Abstraction has has 57 places, 72 transitions, 320 flow [2020-10-16 03:28:55,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 03:28:55,052 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:28:55,053 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:28:55,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 03:28:55,053 INFO L429 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 03:28:55,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:28:55,053 INFO L82 PathProgramCache]: Analyzing trace with hash 945537603, now seen corresponding path program 2 times [2020-10-16 03:28:55,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:28:55,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334862199] [2020-10-16 03:28:55,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:28:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:28:55,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:28:55,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334862199] [2020-10-16 03:28:55,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:28:55,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 03:28:55,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020173923] [2020-10-16 03:28:55,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:28:55,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:28:55,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:28:55,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:28:55,137 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 144 [2020-10-16 03:28:55,138 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 72 transitions, 320 flow. Second operand 3 states. [2020-10-16 03:28:55,138 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:28:55,138 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 144 [2020-10-16 03:28:55,138 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:28:55,309 INFO L129 PetriNetUnfolder]: 325/1367 cut-off events. [2020-10-16 03:28:55,310 INFO L130 PetriNetUnfolder]: For 497/582 co-relation queries the response was YES. [2020-10-16 03:28:55,317 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2395 conditions, 1367 events. 325/1367 cut-off events. For 497/582 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 12625 event pairs, 9 based on Foata normal form. 54/1361 useless extension candidates. Maximal degree in co-relation 1545. Up to 204 conditions per place. [2020-10-16 03:28:55,325 INFO L132 encePairwiseOnDemand]: 138/144 looper letters, 5 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2020-10-16 03:28:55,325 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 71 transitions, 336 flow [2020-10-16 03:28:55,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:28:55,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:28:55,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2020-10-16 03:28:55,327 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8240740740740741 [2020-10-16 03:28:55,327 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2020-10-16 03:28:55,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2020-10-16 03:28:55,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:28:55,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2020-10-16 03:28:55,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:28:55,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:28:55,330 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:28:55,331 INFO L185 Difference]: Start difference. First operand has 57 places, 72 transitions, 320 flow. Second operand 3 states and 356 transitions. [2020-10-16 03:28:55,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 71 transitions, 336 flow [2020-10-16 03:28:55,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 71 transitions, 336 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 03:28:55,336 INFO L241 Difference]: Finished difference. Result has 60 places, 71 transitions, 336 flow [2020-10-16 03:28:55,336 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=60, PETRI_TRANSITIONS=71} [2020-10-16 03:28:55,336 INFO L342 CegarLoopForPetriNet]: 51 programPoint places, 9 predicate places. [2020-10-16 03:28:55,337 INFO L481 AbstractCegarLoop]: Abstraction has has 60 places, 71 transitions, 336 flow [2020-10-16 03:28:55,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:28:55,337 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:28:55,337 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:28:55,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 03:28:55,337 INFO L429 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 03:28:55,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:28:55,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1448176315, now seen corresponding path program 1 times [2020-10-16 03:28:55,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:28:55,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479396722] [2020-10-16 03:28:55,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:28:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:28:55,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:28:55,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479396722] [2020-10-16 03:28:55,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:28:55,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 03:28:55,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301087403] [2020-10-16 03:28:55,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 03:28:55,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:28:55,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 03:28:55,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 03:28:55,376 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 144 [2020-10-16 03:28:55,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 71 transitions, 336 flow. Second operand 4 states. [2020-10-16 03:28:55,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:28:55,377 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 144 [2020-10-16 03:28:55,377 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:28:55,668 INFO L129 PetriNetUnfolder]: 466/1753 cut-off events. [2020-10-16 03:28:55,668 INFO L130 PetriNetUnfolder]: For 1122/1171 co-relation queries the response was YES. [2020-10-16 03:28:55,677 INFO L80 FinitePrefix]: Finished finitePrefix Result has 3630 conditions, 1753 events. 466/1753 cut-off events. For 1122/1171 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 16157 event pairs, 28 based on Foata normal form. 47/1753 useless extension candidates. Maximal degree in co-relation 1121. Up to 246 conditions per place. [2020-10-16 03:28:55,687 INFO L132 encePairwiseOnDemand]: 133/144 looper letters, 38 selfloop transitions, 25 changer transitions 0/102 dead transitions. [2020-10-16 03:28:55,687 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 102 transitions, 621 flow [2020-10-16 03:28:55,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 03:28:55,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 03:28:55,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 573 transitions. [2020-10-16 03:28:55,690 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7958333333333333 [2020-10-16 03:28:55,690 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 573 transitions. [2020-10-16 03:28:55,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 573 transitions. [2020-10-16 03:28:55,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:28:55,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 573 transitions. [2020-10-16 03:28:55,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 03:28:55,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 03:28:55,694 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 03:28:55,694 INFO L185 Difference]: Start difference. First operand has 60 places, 71 transitions, 336 flow. Second operand 5 states and 573 transitions. [2020-10-16 03:28:55,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 102 transitions, 621 flow [2020-10-16 03:28:55,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 102 transitions, 607 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 03:28:55,704 INFO L241 Difference]: Finished difference. Result has 66 places, 91 transitions, 554 flow [2020-10-16 03:28:55,705 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=554, PETRI_PLACES=66, PETRI_TRANSITIONS=91} [2020-10-16 03:28:55,705 INFO L342 CegarLoopForPetriNet]: 51 programPoint places, 15 predicate places. [2020-10-16 03:28:55,705 INFO L481 AbstractCegarLoop]: Abstraction has has 66 places, 91 transitions, 554 flow [2020-10-16 03:28:55,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 03:28:55,706 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:28:55,706 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:28:55,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 03:28:55,707 INFO L429 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 03:28:55,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:28:55,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1061044003, now seen corresponding path program 1 times [2020-10-16 03:28:55,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:28:55,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67899835] [2020-10-16 03:28:55,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:28:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 03:28:55,753 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 03:28:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 03:28:55,778 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 03:28:55,819 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 03:28:55,820 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 03:28:55,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 03:28:55,821 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 03:28:55,831 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [274] [274] L697-->L697-3: Formula: (= ~x~0_In-1194116567 ~y~0_In-1194116567) InVars {~y~0=~y~0_In-1194116567, ~x~0=~x~0_In-1194116567} OutVars{~y~0=~y~0_In-1194116567, ~x~0=~x~0_In-1194116567} AuxVars[] AssignedVars[] because there is no mapped edge [2020-10-16 03:28:55,837 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 03:28:55,837 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 03:28:55,842 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 03:28:55,842 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 03:28:55,843 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 03:28:55,843 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 03:28:55,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:28:55 BasicIcfg [2020-10-16 03:28:55,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 03:28:55,895 INFO L168 Benchmark]: Toolchain (without parser) took 6631.75 ms. Allocated memory was 250.1 MB in the beginning and 427.3 MB in the end (delta: 177.2 MB). Free memory was 204.5 MB in the beginning and 362.3 MB in the end (delta: -157.8 MB). Peak memory consumption was 19.5 MB. Max. memory is 14.2 GB. [2020-10-16 03:28:55,895 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 250.1 MB. Free memory is still 226.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 03:28:55,896 INFO L168 Benchmark]: CACSL2BoogieTranslator took 928.74 ms. Allocated memory was 250.1 MB in the beginning and 309.9 MB in the end (delta: 59.8 MB). Free memory was 204.5 MB in the beginning and 263.2 MB in the end (delta: -58.7 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. [2020-10-16 03:28:55,897 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.21 ms. Allocated memory is still 309.9 MB. Free memory was 263.2 MB in the beginning and 260.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 03:28:55,898 INFO L168 Benchmark]: Boogie Preprocessor took 46.71 ms. Allocated memory is still 309.9 MB. Free memory was 260.7 MB in the beginning and 258.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 03:28:55,899 INFO L168 Benchmark]: RCFGBuilder took 703.82 ms. Allocated memory is still 309.9 MB. Free memory was 258.2 MB in the beginning and 228.8 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 14.2 GB. [2020-10-16 03:28:55,900 INFO L168 Benchmark]: TraceAbstraction took 4880.28 ms. Allocated memory was 309.9 MB in the beginning and 427.3 MB in the end (delta: 117.4 MB). Free memory was 228.8 MB in the beginning and 362.3 MB in the end (delta: -133.5 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 03:28:55,904 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 250.1 MB. Free memory is still 226.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 928.74 ms. Allocated memory was 250.1 MB in the beginning and 309.9 MB in the end (delta: 59.8 MB). Free memory was 204.5 MB in the beginning and 263.2 MB in the end (delta: -58.7 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 64.21 ms. Allocated memory is still 309.9 MB. Free memory was 263.2 MB in the beginning and 260.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 46.71 ms. Allocated memory is still 309.9 MB. Free memory was 260.7 MB in the beginning and 258.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 703.82 ms. Allocated memory is still 309.9 MB. Free memory was 258.2 MB in the beginning and 228.8 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 4880.28 ms. Allocated memory was 309.9 MB in the beginning and 427.3 MB in the end (delta: 117.4 MB). Free memory was 228.8 MB in the beginning and 362.3 MB in the end (delta: -133.5 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1911 VarBasedMoverChecksPositive, 84 VarBasedMoverChecksNegative, 29 SemBasedMoverChecksPositive, 55 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 700 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.3s, 84 PlacesBefore, 51 PlacesAfterwards, 82 TransitionsBefore, 48 TransitionsAfterwards, 2626 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 42 TotalNumberOfCompositions, 18372 MoverChecksTotal - CounterExampleResult [Line: 697]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L677] 0 int w=0, r=0, x, y; [L703] 0 pthread_t t1, t2, t3, t4; [L704] FCALL, FORK 0 pthread_create(&t1, 0, writer, 0) VAL [r=0, w=0, x=0, y=0] [L705] FCALL, FORK 0 pthread_create(&t2, 0, reader, 0) VAL [r=0, w=0, x=0, y=0] [L693] 2 int l; [L694] CALL 2 __VERIFIER_atomic_take_read_lock() [L683] CALL 2 assume_abort_if_not(w==0) [L3] COND TRUE 2 !cond [L683] RET 2 assume_abort_if_not(w==0) [L684] 2 r = r+1 [L694] RET 2 __VERIFIER_atomic_take_read_lock() [L695] 2 l = x VAL [r=1, w=0, x=0, y=0] [L696] 2 y = l VAL [r=1, w=0, x=0, y=0] [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] [L698] 2 l = r-1 VAL [r=1, w=0, x=0, y=0] [L693] 4 int l; [L694] CALL 4 __VERIFIER_atomic_take_read_lock() [L683] CALL 4 assume_abort_if_not(w==0) [L3] COND TRUE 4 !cond [L683] RET 4 assume_abort_if_not(w==0) [L684] 4 r = r+1 [L694] RET 4 __VERIFIER_atomic_take_read_lock() [L695] 4 l = x VAL [r=2, w=0, x=0, y=0] [L696] 4 y = l VAL [r=2, w=0, x=0, y=0] [L699] 2 r = l [L700] 2 return 0; [L687] CALL 1 __VERIFIER_atomic_take_write_lock() [L679] CALL 1 assume_abort_if_not(w==0 && r==0) [L3] COND FALSE 1 !(!cond) [L679] RET 1 assume_abort_if_not(w==0 && r==0) [L680] 1 w = 1 [L687] RET 1 __VERIFIER_atomic_take_write_lock() [L688] 1 x = 3 VAL [r=0, w=1, x=3, y=0] [L697] COND TRUE 4 !(y == x) [L697] 4 __VERIFIER_error() VAL [r=0, w=1, x=3, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 4.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 43 SDtfs, 39 SDslu, 11 SDs, 0 SdLazy, 120 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=554occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 584 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...