/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.epf -i ../../../trunk/examples/svcomp/pthread-atomic/szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 00:02:51,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 00:02:51,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 00:02:51,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 00:02:51,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 00:02:51,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 00:02:51,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 00:02:51,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 00:02:51,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 00:02:51,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 00:02:51,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 00:02:51,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 00:02:51,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 00:02:51,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 00:02:51,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 00:02:51,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 00:02:51,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 00:02:51,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 00:02:51,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 00:02:51,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 00:02:51,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 00:02:51,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 00:02:51,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 00:02:51,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 00:02:51,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 00:02:51,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 00:02:51,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 00:02:51,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 00:02:51,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 00:02:51,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 00:02:51,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 00:02:51,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 00:02:51,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 00:02:51,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 00:02:51,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 00:02:51,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 00:02:51,591 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.epf [2020-10-16 00:02:51,636 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 00:02:51,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 00:02:51,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 00:02:51,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 00:02:51,638 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 00:02:51,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 00:02:51,639 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 00:02:51,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 00:02:51,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 00:02:51,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 00:02:51,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 00:02:51,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 00:02:51,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 00:02:51,642 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 00:02:51,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 00:02:51,642 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 00:02:51,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 00:02:51,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 00:02:51,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 00:02:51,643 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 00:02:51,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 00:02:51,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 00:02:51,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 00:02:51,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 00:02:51,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 00:02:51,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 00:02:51,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 00:02:51,644 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 00:02:51,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 00:02:51,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 00:02:51,959 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 00:02:51,962 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 00:02:51,964 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 00:02:51,964 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 00:02:51,965 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/szymanski.i [2020-10-16 00:02:52,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc88421e6/e2bd86c28a2b45a68c053eed8b8f4447/FLAG5b34cbf87 [2020-10-16 00:02:52,535 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 00:02:52,536 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i [2020-10-16 00:02:52,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc88421e6/e2bd86c28a2b45a68c053eed8b8f4447/FLAG5b34cbf87 [2020-10-16 00:02:52,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc88421e6/e2bd86c28a2b45a68c053eed8b8f4447 [2020-10-16 00:02:52,870 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 00:02:52,872 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 00:02:52,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 00:02:52,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 00:02:52,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 00:02:52,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:02:52" (1/1) ... [2020-10-16 00:02:52,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ecc0849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:02:52, skipping insertion in model container [2020-10-16 00:02:52,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:02:52" (1/1) ... [2020-10-16 00:02:52,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 00:02:52,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 00:02:53,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 00:02:53,396 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 00:02:53,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 00:02:53,519 INFO L208 MainTranslator]: Completed translation [2020-10-16 00:02:53,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:02:53 WrapperNode [2020-10-16 00:02:53,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 00:02:53,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 00:02:53,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 00:02:53,521 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 00:02:53,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:02:53" (1/1) ... [2020-10-16 00:02:53,544 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:02:53" (1/1) ... [2020-10-16 00:02:53,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 00:02:53,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 00:02:53,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 00:02:53,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 00:02:53,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:02:53" (1/1) ... [2020-10-16 00:02:53,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:02:53" (1/1) ... [2020-10-16 00:02:53,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:02:53" (1/1) ... [2020-10-16 00:02:53,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:02:53" (1/1) ... [2020-10-16 00:02:53,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:02:53" (1/1) ... [2020-10-16 00:02:53,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:02:53" (1/1) ... [2020-10-16 00:02:53,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:02:53" (1/1) ... [2020-10-16 00:02:53,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 00:02:53,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 00:02:53,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 00:02:53,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 00:02:53,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:02:53" (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 00:02:53,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 00:02:53,668 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 00:02:53,668 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 00:02:53,668 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 00:02:53,668 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 00:02:53,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 00:02:53,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 00:02:53,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 00:02:53,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 00:02:53,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 00:02:53,670 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 00:02:54,024 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 00:02:54,024 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-16 00:02:54,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:02:54 BoogieIcfgContainer [2020-10-16 00:02:54,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 00:02:54,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 00:02:54,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 00:02:54,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 00:02:54,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:02:52" (1/3) ... [2020-10-16 00:02:54,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4575e6c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:02:54, skipping insertion in model container [2020-10-16 00:02:54,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:02:53" (2/3) ... [2020-10-16 00:02:54,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4575e6c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:02:54, skipping insertion in model container [2020-10-16 00:02:54,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:02:54" (3/3) ... [2020-10-16 00:02:54,034 INFO L111 eAbstractionObserver]: Analyzing ICFG szymanski.i [2020-10-16 00:02:54,044 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 00:02:54,052 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 00:02:54,053 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 00:02:54,075 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:54,076 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:54,076 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:54,076 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:54,078 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:54,078 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:54,079 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:54,079 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:54,079 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:54,079 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:54,080 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:54,081 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:54,084 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:54,085 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:54,085 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:54,085 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:54,092 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:54,092 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:54,092 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:54,093 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:54,116 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 00:02:54,136 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 00:02:54,136 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 00:02:54,136 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 00:02:54,137 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 00:02:54,137 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 00:02:54,137 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 00:02:54,137 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 00:02:54,137 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 00:02:54,151 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 72 places, 87 transitions, 196 flow [2020-10-16 00:02:54,193 INFO L129 PetriNetUnfolder]: 21/87 cut-off events. [2020-10-16 00:02:54,193 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 00:02:54,200 INFO L80 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 87 events. 21/87 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 65. Up to 3 conditions per place. [2020-10-16 00:02:54,200 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 87 transitions, 196 flow [2020-10-16 00:02:54,207 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 75 transitions, 162 flow [2020-10-16 00:02:54,208 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 00:02:54,211 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 75 transitions, 162 flow [2020-10-16 00:02:54,213 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 75 transitions, 162 flow [2020-10-16 00:02:54,213 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 75 transitions, 162 flow [2020-10-16 00:02:54,233 INFO L129 PetriNetUnfolder]: 20/77 cut-off events. [2020-10-16 00:02:54,233 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 00:02:54,234 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 77 events. 20/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 93 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 65. Up to 3 conditions per place. [2020-10-16 00:02:54,237 INFO L117 LiptonReduction]: Number of co-enabled transitions 2160 [2020-10-16 00:02:55,098 INFO L132 LiptonReduction]: Checked pairs total: 4851 [2020-10-16 00:02:55,098 INFO L134 LiptonReduction]: Total number of compositions: 34 [2020-10-16 00:02:55,101 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 894 [2020-10-16 00:02:55,112 INFO L129 PetriNetUnfolder]: 13/34 cut-off events. [2020-10-16 00:02:55,112 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:02:55,112 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:02:55,113 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:02:55,114 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:02:55,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:02:55,120 INFO L82 PathProgramCache]: Analyzing trace with hash -2121391829, now seen corresponding path program 1 times [2020-10-16 00:02:55,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:02:55,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410702839] [2020-10-16 00:02:55,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:02:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:02:55,284 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 00:02:55,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410702839] [2020-10-16 00:02:55,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:02:55,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 00:02:55,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924912297] [2020-10-16 00:02:55,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 00:02:55,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:02:55,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 00:02:55,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 00:02:55,317 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 121 [2020-10-16 00:02:55,318 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 53 transitions, 118 flow. Second operand 2 states. [2020-10-16 00:02:55,319 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:02:55,319 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 121 [2020-10-16 00:02:55,320 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:02:55,335 INFO L129 PetriNetUnfolder]: 10/47 cut-off events. [2020-10-16 00:02:55,335 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 00:02:55,336 INFO L80 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 47 events. 10/47 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 8/43 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2020-10-16 00:02:55,337 INFO L132 encePairwiseOnDemand]: 113/121 looper letters, 0 selfloop transitions, 0 changer transitions 0/45 dead transitions. [2020-10-16 00:02:55,337 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 102 flow [2020-10-16 00:02:55,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 00:02:55,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-16 00:02:55,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 206 transitions. [2020-10-16 00:02:55,352 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8512396694214877 [2020-10-16 00:02:55,353 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 206 transitions. [2020-10-16 00:02:55,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 206 transitions. [2020-10-16 00:02:55,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:02:55,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 206 transitions. [2020-10-16 00:02:55,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-16 00:02:55,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-16 00:02:55,366 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-16 00:02:55,371 INFO L185 Difference]: Start difference. First operand has 41 places, 53 transitions, 118 flow. Second operand 2 states and 206 transitions. [2020-10-16 00:02:55,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 102 flow [2020-10-16 00:02:55,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 94 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-16 00:02:55,377 INFO L241 Difference]: Finished difference. Result has 38 places, 45 transitions, 94 flow [2020-10-16 00:02:55,380 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=94, PETRI_PLACES=38, PETRI_TRANSITIONS=45} [2020-10-16 00:02:55,381 INFO L342 CegarLoopForPetriNet]: 41 programPoint places, -3 predicate places. [2020-10-16 00:02:55,381 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 45 transitions, 94 flow [2020-10-16 00:02:55,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 00:02:55,381 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:02:55,382 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:02:55,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 00:02:55,382 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:02:55,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:02:55,383 INFO L82 PathProgramCache]: Analyzing trace with hash 853553953, now seen corresponding path program 1 times [2020-10-16 00:02:55,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:02:55,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47071842] [2020-10-16 00:02:55,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:02:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:02:55,439 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 00:02:55,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47071842] [2020-10-16 00:02:55,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:02:55,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 00:02:55,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471532790] [2020-10-16 00:02:55,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:02:55,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:02:55,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:02:55,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:02:55,443 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 121 [2020-10-16 00:02:55,444 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 45 transitions, 94 flow. Second operand 3 states. [2020-10-16 00:02:55,444 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:02:55,444 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 121 [2020-10-16 00:02:55,444 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:02:55,506 INFO L129 PetriNetUnfolder]: 22/98 cut-off events. [2020-10-16 00:02:55,508 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:02:55,509 INFO L80 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 98 events. 22/98 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 281 event pairs, 2 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 128. Up to 18 conditions per place. [2020-10-16 00:02:55,510 INFO L132 encePairwiseOnDemand]: 116/121 looper letters, 7 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2020-10-16 00:02:55,510 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 48 transitions, 120 flow [2020-10-16 00:02:55,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:02:55,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:02:55,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2020-10-16 00:02:55,516 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2020-10-16 00:02:55,517 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2020-10-16 00:02:55,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2020-10-16 00:02:55,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:02:55,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2020-10-16 00:02:55,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:02:55,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:02:55,523 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:02:55,524 INFO L185 Difference]: Start difference. First operand has 38 places, 45 transitions, 94 flow. Second operand 3 states and 264 transitions. [2020-10-16 00:02:55,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 48 transitions, 120 flow [2020-10-16 00:02:55,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 48 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 00:02:55,528 INFO L241 Difference]: Finished difference. Result has 42 places, 46 transitions, 114 flow [2020-10-16 00:02:55,529 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=42, PETRI_TRANSITIONS=46} [2020-10-16 00:02:55,529 INFO L342 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2020-10-16 00:02:55,529 INFO L481 AbstractCegarLoop]: Abstraction has has 42 places, 46 transitions, 114 flow [2020-10-16 00:02:55,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:02:55,530 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:02:55,530 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:02:55,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 00:02:55,530 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:02:55,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:02:55,531 INFO L82 PathProgramCache]: Analyzing trace with hash 2094116349, now seen corresponding path program 1 times [2020-10-16 00:02:55,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:02:55,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309847084] [2020-10-16 00:02:55,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:02:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:02:55,588 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 00:02:55,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309847084] [2020-10-16 00:02:55,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:02:55,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 00:02:55,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533138922] [2020-10-16 00:02:55,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:02:55,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:02:55,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:02:55,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:02:55,592 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 121 [2020-10-16 00:02:55,592 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 46 transitions, 114 flow. Second operand 3 states. [2020-10-16 00:02:55,592 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:02:55,592 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 121 [2020-10-16 00:02:55,592 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:02:55,619 INFO L129 PetriNetUnfolder]: 16/83 cut-off events. [2020-10-16 00:02:55,620 INFO L130 PetriNetUnfolder]: For 11/13 co-relation queries the response was YES. [2020-10-16 00:02:55,621 INFO L80 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 83 events. 16/83 cut-off events. For 11/13 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 217 event pairs, 2 based on Foata normal form. 6/74 useless extension candidates. Maximal degree in co-relation 123. Up to 11 conditions per place. [2020-10-16 00:02:55,621 INFO L132 encePairwiseOnDemand]: 117/121 looper letters, 6 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2020-10-16 00:02:55,622 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 130 flow [2020-10-16 00:02:55,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:02:55,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:02:55,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2020-10-16 00:02:55,624 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.721763085399449 [2020-10-16 00:02:55,625 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2020-10-16 00:02:55,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2020-10-16 00:02:55,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:02:55,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2020-10-16 00:02:55,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:02:55,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:02:55,628 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:02:55,628 INFO L185 Difference]: Start difference. First operand has 42 places, 46 transitions, 114 flow. Second operand 3 states and 262 transitions. [2020-10-16 00:02:55,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 130 flow [2020-10-16 00:02:55,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 00:02:55,630 INFO L241 Difference]: Finished difference. Result has 43 places, 46 transitions, 118 flow [2020-10-16 00:02:55,630 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=43, PETRI_TRANSITIONS=46} [2020-10-16 00:02:55,631 INFO L342 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2020-10-16 00:02:55,631 INFO L481 AbstractCegarLoop]: Abstraction has has 43 places, 46 transitions, 118 flow [2020-10-16 00:02:55,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:02:55,631 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:02:55,631 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:02:55,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 00:02:55,632 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:02:55,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:02:55,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1089394459, now seen corresponding path program 1 times [2020-10-16 00:02:55,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:02:55,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760140121] [2020-10-16 00:02:55,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:02:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:02:55,679 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 00:02:55,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760140121] [2020-10-16 00:02:55,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:02:55,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 00:02:55,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107186598] [2020-10-16 00:02:55,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:02:55,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:02:55,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:02:55,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:02:55,684 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 121 [2020-10-16 00:02:55,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 46 transitions, 118 flow. Second operand 3 states. [2020-10-16 00:02:55,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:02:55,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 121 [2020-10-16 00:02:55,684 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:02:55,761 INFO L129 PetriNetUnfolder]: 131/326 cut-off events. [2020-10-16 00:02:55,761 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2020-10-16 00:02:55,763 INFO L80 FinitePrefix]: Finished finitePrefix Result has 534 conditions, 326 events. 131/326 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1422 event pairs, 33 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 528. Up to 118 conditions per place. [2020-10-16 00:02:55,764 INFO L132 encePairwiseOnDemand]: 110/121 looper letters, 15 selfloop transitions, 6 changer transitions 4/55 dead transitions. [2020-10-16 00:02:55,765 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 186 flow [2020-10-16 00:02:55,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:02:55,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:02:55,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2020-10-16 00:02:55,767 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.71900826446281 [2020-10-16 00:02:55,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2020-10-16 00:02:55,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2020-10-16 00:02:55,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:02:55,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2020-10-16 00:02:55,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:02:55,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:02:55,770 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:02:55,770 INFO L185 Difference]: Start difference. First operand has 43 places, 46 transitions, 118 flow. Second operand 3 states and 261 transitions. [2020-10-16 00:02:55,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 186 flow [2020-10-16 00:02:55,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 55 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 00:02:55,773 INFO L241 Difference]: Finished difference. Result has 45 places, 49 transitions, 156 flow [2020-10-16 00:02:55,774 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=45, PETRI_TRANSITIONS=49} [2020-10-16 00:02:55,774 INFO L342 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2020-10-16 00:02:55,774 INFO L481 AbstractCegarLoop]: Abstraction has has 45 places, 49 transitions, 156 flow [2020-10-16 00:02:55,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:02:55,775 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:02:55,775 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:02:55,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 00:02:55,775 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:02:55,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:02:55,776 INFO L82 PathProgramCache]: Analyzing trace with hash 2141563777, now seen corresponding path program 2 times [2020-10-16 00:02:55,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:02:55,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082377910] [2020-10-16 00:02:55,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:02:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:02:55,802 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 00:02:55,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082377910] [2020-10-16 00:02:55,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:02:55,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 00:02:55,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992798619] [2020-10-16 00:02:55,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:02:55,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:02:55,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:02:55,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:02:55,805 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 121 [2020-10-16 00:02:55,806 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 49 transitions, 156 flow. Second operand 3 states. [2020-10-16 00:02:55,806 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:02:55,806 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 121 [2020-10-16 00:02:55,806 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:02:55,877 INFO L129 PetriNetUnfolder]: 158/364 cut-off events. [2020-10-16 00:02:55,877 INFO L130 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2020-10-16 00:02:55,879 INFO L80 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 364 events. 158/364 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1582 event pairs, 32 based on Foata normal form. 0/292 useless extension candidates. Maximal degree in co-relation 675. Up to 122 conditions per place. [2020-10-16 00:02:55,879 INFO L132 encePairwiseOnDemand]: 110/121 looper letters, 0 selfloop transitions, 0 changer transitions 56/56 dead transitions. [2020-10-16 00:02:55,880 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 216 flow [2020-10-16 00:02:55,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:02:55,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:02:55,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2020-10-16 00:02:55,881 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.71900826446281 [2020-10-16 00:02:55,882 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2020-10-16 00:02:55,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2020-10-16 00:02:55,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:02:55,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2020-10-16 00:02:55,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:02:55,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:02:55,884 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:02:55,884 INFO L185 Difference]: Start difference. First operand has 45 places, 49 transitions, 156 flow. Second operand 3 states and 261 transitions. [2020-10-16 00:02:55,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 216 flow [2020-10-16 00:02:55,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 56 transitions, 204 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-16 00:02:55,888 INFO L241 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2020-10-16 00:02:55,888 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2020-10-16 00:02:55,888 INFO L342 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2020-10-16 00:02:55,889 INFO L481 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2020-10-16 00:02:55,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:02:55,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 00:02:55,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:02:55 BasicIcfg [2020-10-16 00:02:55,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 00:02:55,896 INFO L168 Benchmark]: Toolchain (without parser) took 3023.28 ms. Allocated memory was 253.2 MB in the beginning and 358.1 MB in the end (delta: 104.9 MB). Free memory was 205.2 MB in the beginning and 192.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 117.5 MB. Max. memory is 14.2 GB. [2020-10-16 00:02:55,896 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 253.2 MB. Free memory is still 227.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 00:02:55,897 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.68 ms. Allocated memory was 253.2 MB in the beginning and 316.7 MB in the end (delta: 63.4 MB). Free memory was 205.2 MB in the beginning and 274.6 MB in the end (delta: -69.3 MB). Peak memory consumption was 30.4 MB. Max. memory is 14.2 GB. [2020-10-16 00:02:55,898 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.71 ms. Allocated memory is still 316.7 MB. Free memory was 274.6 MB in the beginning and 272.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 00:02:55,899 INFO L168 Benchmark]: Boogie Preprocessor took 29.72 ms. Allocated memory is still 316.7 MB. Free memory was 272.0 MB in the beginning and 269.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 00:02:55,900 INFO L168 Benchmark]: RCFGBuilder took 430.81 ms. Allocated memory is still 316.7 MB. Free memory was 269.5 MB in the beginning and 247.7 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 00:02:55,901 INFO L168 Benchmark]: TraceAbstraction took 1866.28 ms. Allocated memory was 316.7 MB in the beginning and 358.1 MB in the end (delta: 41.4 MB). Free memory was 245.2 MB in the beginning and 192.6 MB in the end (delta: 52.5 MB). Peak memory consumption was 94.0 MB. Max. memory is 14.2 GB. [2020-10-16 00:02:55,905 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 253.2 MB. Free memory is still 227.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 647.68 ms. Allocated memory was 253.2 MB in the beginning and 316.7 MB in the end (delta: 63.4 MB). Free memory was 205.2 MB in the beginning and 274.6 MB in the end (delta: -69.3 MB). Peak memory consumption was 30.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 43.71 ms. Allocated memory is still 316.7 MB. Free memory was 274.6 MB in the beginning and 272.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 29.72 ms. Allocated memory is still 316.7 MB. Free memory was 272.0 MB in the beginning and 269.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 430.81 ms. Allocated memory is still 316.7 MB. Free memory was 269.5 MB in the beginning and 247.7 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 1866.28 ms. Allocated memory was 316.7 MB in the beginning and 358.1 MB in the end (delta: 41.4 MB). Free memory was 245.2 MB in the beginning and 192.6 MB in the end (delta: 52.5 MB). Peak memory consumption was 94.0 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 919 VarBasedMoverChecksPositive, 93 VarBasedMoverChecksNegative, 63 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 301 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.8s, 61 PlacesBefore, 41 PlacesAfterwards, 75 TransitionsBefore, 53 TransitionsAfterwards, 2160 CoEnabledTransitionPairs, 4 FixpointIterations, 10 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 2 ChoiceCompositions, 34 TotalNumberOfCompositions, 4851 MoverChecksTotal - PositiveResult [Line: 702]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 686]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 66 locations, 2 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: SAFE, OverallTime: 1.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 52 SDtfs, 12 SDslu, 0 SDs, 0 SdLazy, 58 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=156occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 1263 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...