/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-wmm/safe016_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:05:15,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:05:15,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:05:15,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:05:15,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:05:15,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:05:15,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:05:15,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:05:15,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:05:15,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:05:15,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:05:15,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:05:15,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:05:15,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:05:15,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:05:15,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:05:15,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:05:15,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:05:15,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:05:15,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:05:15,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:05:15,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:05:15,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:05:15,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:05:15,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 05:05:15,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:05:15,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:05:15,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:05:15,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:05:15,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:05:15,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:05:15,414 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:05:15,414 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:05:15,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:05:15,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:05:15,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:05:15,417 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 05:05:15,438 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:05:15,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:05:15,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:05:15,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:05:15,440 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:05:15,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:05:15,441 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:05:15,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:05:15,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:05:15,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:05:15,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:05:15,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:05:15,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:05:15,442 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:05:15,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:05:15,442 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:05:15,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:05:15,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:05:15,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:05:15,443 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:05:15,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:05:15,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:05:15,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:05:15,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:05:15,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:05:15,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:05:15,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:05:15,445 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:05:15,445 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:05:15,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:05:15,739 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:05:15,742 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:05:15,744 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:05:15,744 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:05:15,745 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2020-10-16 05:05:15,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e71b367b3/ec8169cce33b4c819edf2a7d1cc6802b/FLAG940b3d165 [2020-10-16 05:05:16,309 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:05:16,310 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2020-10-16 05:05:16,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e71b367b3/ec8169cce33b4c819edf2a7d1cc6802b/FLAG940b3d165 [2020-10-16 05:05:16,667 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e71b367b3/ec8169cce33b4c819edf2a7d1cc6802b [2020-10-16 05:05:16,675 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:05:16,677 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:05:16,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:05:16,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:05:16,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:05:16,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:05:16" (1/1) ... [2020-10-16 05:05:16,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@93fe9d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:16, skipping insertion in model container [2020-10-16 05:05:16,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:05:16" (1/1) ... [2020-10-16 05:05:16,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:05:16,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:05:17,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:05:17,246 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:05:17,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:05:17,365 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:05:17,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:17 WrapperNode [2020-10-16 05:05:17,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:05:17,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:05:17,367 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:05:17,367 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:05:17,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:17" (1/1) ... [2020-10-16 05:05:17,404 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:17" (1/1) ... [2020-10-16 05:05:17,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:05:17,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:05:17,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:05:17,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:05:17,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:17" (1/1) ... [2020-10-16 05:05:17,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:17" (1/1) ... [2020-10-16 05:05:17,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:17" (1/1) ... [2020-10-16 05:05:17,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:17" (1/1) ... [2020-10-16 05:05:17,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:17" (1/1) ... [2020-10-16 05:05:17,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:17" (1/1) ... [2020-10-16 05:05:17,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:17" (1/1) ... [2020-10-16 05:05:17,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:05:17,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:05:17,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:05:17,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:05:17,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:17" (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 05:05:17,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:05:17,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:05:17,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:05:17,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:05:17,522 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:05:17,522 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:05:17,523 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:05:17,523 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:05:17,523 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 05:05:17,523 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 05:05:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-16 05:05:17,524 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-16 05:05:17,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:05:17,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:05:17,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:05:17,533 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 05:05:17,910 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:05:17,910 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:05:17,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:05:17 BoogieIcfgContainer [2020-10-16 05:05:17,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:05:17,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:05:17,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:05:17,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:05:17,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:05:16" (1/3) ... [2020-10-16 05:05:17,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581e42ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:05:17, skipping insertion in model container [2020-10-16 05:05:17,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:17" (2/3) ... [2020-10-16 05:05:17,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581e42ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:05:17, skipping insertion in model container [2020-10-16 05:05:17,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:05:17" (3/3) ... [2020-10-16 05:05:17,922 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_tso.oepc.i [2020-10-16 05:05:17,935 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:05:17,942 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:05:17,943 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:05:17,976 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,977 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,977 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,977 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,978 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,978 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,979 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,979 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,979 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,980 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,980 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,980 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,981 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,981 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,981 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,981 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,982 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,982 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,983 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,983 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,983 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,983 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,984 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,984 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,988 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,988 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,988 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,989 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,995 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,995 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,995 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,996 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,999 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,999 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,999 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:17,999 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:18,002 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:18,002 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:18,002 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:18,002 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:18,021 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 05:05:18,044 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:05:18,044 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:05:18,044 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:05:18,044 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:05:18,044 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:05:18,044 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:05:18,045 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:05:18,045 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:05:18,060 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-10-16 05:05:18,110 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-10-16 05:05:18,111 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:05:18,117 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-16 05:05:18,117 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 80 transitions, 180 flow [2020-10-16 05:05:18,124 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 63 transitions, 138 flow [2020-10-16 05:05:18,127 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:05:18,130 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 63 transitions, 138 flow [2020-10-16 05:05:18,133 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 63 transitions, 138 flow [2020-10-16 05:05:18,134 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 63 transitions, 138 flow [2020-10-16 05:05:18,158 INFO L129 PetriNetUnfolder]: 1/63 cut-off events. [2020-10-16 05:05:18,159 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:05:18,160 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 63 events. 1/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-16 05:05:18,162 INFO L117 LiptonReduction]: Number of co-enabled transitions 1250 [2020-10-16 05:05:19,715 INFO L132 LiptonReduction]: Checked pairs total: 2211 [2020-10-16 05:05:19,715 INFO L134 LiptonReduction]: Total number of compositions: 47 [2020-10-16 05:05:19,718 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1593 [2020-10-16 05:05:19,728 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 05:05:19,729 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:05:19,729 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:19,730 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:19,731 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:19,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:19,737 INFO L82 PathProgramCache]: Analyzing trace with hash 599542484, now seen corresponding path program 1 times [2020-10-16 05:05:19,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:19,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728412881] [2020-10-16 05:05:19,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:20,029 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 05:05:20,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728412881] [2020-10-16 05:05:20,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:20,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:05:20,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353664229] [2020-10-16 05:05:20,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:05:20,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:20,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:05:20,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:05:20,058 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 127 [2020-10-16 05:05:20,060 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 54 flow. Second operand 3 states. [2020-10-16 05:05:20,061 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:20,061 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 127 [2020-10-16 05:05:20,062 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:20,127 INFO L129 PetriNetUnfolder]: 12/47 cut-off events. [2020-10-16 05:05:20,128 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:05:20,128 INFO L80 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 47 events. 12/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 104 event pairs, 2 based on Foata normal form. 8/51 useless extension candidates. Maximal degree in co-relation 76. Up to 25 conditions per place. [2020-10-16 05:05:20,130 INFO L132 encePairwiseOnDemand]: 122/127 looper letters, 5 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2020-10-16 05:05:20,130 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 23 transitions, 74 flow [2020-10-16 05:05:20,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:05:20,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:05:20,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 326 transitions. [2020-10-16 05:05:20,147 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8556430446194225 [2020-10-16 05:05:20,148 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 326 transitions. [2020-10-16 05:05:20,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 326 transitions. [2020-10-16 05:05:20,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:20,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 326 transitions. [2020-10-16 05:05:20,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:05:20,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:05:20,165 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:05:20,168 INFO L185 Difference]: Start difference. First operand has 33 places, 21 transitions, 54 flow. Second operand 3 states and 326 transitions. [2020-10-16 05:05:20,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 23 transitions, 74 flow [2020-10-16 05:05:20,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 23 transitions, 70 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-16 05:05:20,174 INFO L241 Difference]: Finished difference. Result has 32 places, 22 transitions, 67 flow [2020-10-16 05:05:20,177 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2020-10-16 05:05:20,178 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2020-10-16 05:05:20,178 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 67 flow [2020-10-16 05:05:20,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:05:20,179 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:20,179 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:20,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:05:20,179 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:20,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:20,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1405922977, now seen corresponding path program 1 times [2020-10-16 05:05:20,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:20,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850430147] [2020-10-16 05:05:20,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:20,255 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 05:05:20,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850430147] [2020-10-16 05:05:20,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:20,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:05:20,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371648286] [2020-10-16 05:05:20,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:05:20,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:20,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:05:20,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:05:20,261 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 127 [2020-10-16 05:05:20,261 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 67 flow. Second operand 3 states. [2020-10-16 05:05:20,261 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:20,261 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 127 [2020-10-16 05:05:20,262 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:20,274 INFO L129 PetriNetUnfolder]: 3/28 cut-off events. [2020-10-16 05:05:20,274 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-16 05:05:20,275 INFO L80 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 28 events. 3/28 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 1 based on Foata normal form. 2/29 useless extension candidates. Maximal degree in co-relation 47. Up to 10 conditions per place. [2020-10-16 05:05:20,275 INFO L132 encePairwiseOnDemand]: 124/127 looper letters, 1 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2020-10-16 05:05:20,275 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 22 transitions, 73 flow [2020-10-16 05:05:20,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:05:20,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:05:20,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2020-10-16 05:05:20,279 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8608923884514436 [2020-10-16 05:05:20,279 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2020-10-16 05:05:20,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2020-10-16 05:05:20,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:20,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2020-10-16 05:05:20,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:05:20,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:05:20,283 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:05:20,283 INFO L185 Difference]: Start difference. First operand has 32 places, 22 transitions, 67 flow. Second operand 3 states and 328 transitions. [2020-10-16 05:05:20,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 22 transitions, 73 flow [2020-10-16 05:05:20,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 22 transitions, 70 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:05:20,285 INFO L241 Difference]: Finished difference. Result has 34 places, 22 transitions, 72 flow [2020-10-16 05:05:20,285 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=22} [2020-10-16 05:05:20,286 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2020-10-16 05:05:20,286 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 72 flow [2020-10-16 05:05:20,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:05:20,286 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:20,286 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:20,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:05:20,287 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:20,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:20,287 INFO L82 PathProgramCache]: Analyzing trace with hash 633938633, now seen corresponding path program 1 times [2020-10-16 05:05:20,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:20,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143356903] [2020-10-16 05:05:20,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:20,350 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 05:05:20,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143356903] [2020-10-16 05:05:20,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:20,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:05:20,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804663176] [2020-10-16 05:05:20,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:05:20,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:20,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:05:20,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:05:20,354 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 127 [2020-10-16 05:05:20,354 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 72 flow. Second operand 3 states. [2020-10-16 05:05:20,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:20,354 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 127 [2020-10-16 05:05:20,354 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:20,365 INFO L129 PetriNetUnfolder]: 3/28 cut-off events. [2020-10-16 05:05:20,366 INFO L130 PetriNetUnfolder]: For 11/12 co-relation queries the response was YES. [2020-10-16 05:05:20,366 INFO L80 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 28 events. 3/28 cut-off events. For 11/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 1 based on Foata normal form. 1/28 useless extension candidates. Maximal degree in co-relation 50. Up to 10 conditions per place. [2020-10-16 05:05:20,367 INFO L132 encePairwiseOnDemand]: 124/127 looper letters, 1 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2020-10-16 05:05:20,367 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 22 transitions, 78 flow [2020-10-16 05:05:20,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:05:20,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:05:20,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2020-10-16 05:05:20,369 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8608923884514436 [2020-10-16 05:05:20,369 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2020-10-16 05:05:20,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2020-10-16 05:05:20,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:20,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2020-10-16 05:05:20,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:05:20,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:05:20,373 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:05:20,373 INFO L185 Difference]: Start difference. First operand has 34 places, 22 transitions, 72 flow. Second operand 3 states and 328 transitions. [2020-10-16 05:05:20,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 22 transitions, 78 flow [2020-10-16 05:05:20,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 22 transitions, 74 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:05:20,375 INFO L241 Difference]: Finished difference. Result has 35 places, 22 transitions, 76 flow [2020-10-16 05:05:20,375 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=35, PETRI_TRANSITIONS=22} [2020-10-16 05:05:20,375 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2020-10-16 05:05:20,375 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 76 flow [2020-10-16 05:05:20,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:05:20,376 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:20,376 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:20,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:05:20,376 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:20,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:20,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1799443888, now seen corresponding path program 1 times [2020-10-16 05:05:20,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:20,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342056176] [2020-10-16 05:05:20,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:20,416 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 05:05:20,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342056176] [2020-10-16 05:05:20,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:20,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:05:20,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324314] [2020-10-16 05:05:20,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:05:20,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:20,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:05:20,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:05:20,419 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 127 [2020-10-16 05:05:20,420 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 76 flow. Second operand 3 states. [2020-10-16 05:05:20,420 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:20,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 127 [2020-10-16 05:05:20,420 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:20,467 INFO L129 PetriNetUnfolder]: 4/41 cut-off events. [2020-10-16 05:05:20,467 INFO L130 PetriNetUnfolder]: For 27/38 co-relation queries the response was YES. [2020-10-16 05:05:20,468 INFO L80 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 41 events. 4/41 cut-off events. For 27/38 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 101 event pairs, 2 based on Foata normal form. 5/44 useless extension candidates. Maximal degree in co-relation 83. Up to 12 conditions per place. [2020-10-16 05:05:20,468 INFO L132 encePairwiseOnDemand]: 124/127 looper letters, 5 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2020-10-16 05:05:20,468 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 23 transitions, 95 flow [2020-10-16 05:05:20,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:05:20,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:05:20,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2020-10-16 05:05:20,471 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.847769028871391 [2020-10-16 05:05:20,471 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2020-10-16 05:05:20,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2020-10-16 05:05:20,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:20,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2020-10-16 05:05:20,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:05:20,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:05:20,474 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:05:20,474 INFO L185 Difference]: Start difference. First operand has 35 places, 22 transitions, 76 flow. Second operand 3 states and 323 transitions. [2020-10-16 05:05:20,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 23 transitions, 95 flow [2020-10-16 05:05:20,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 23 transitions, 91 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:05:20,476 INFO L241 Difference]: Finished difference. Result has 36 places, 22 transitions, 83 flow [2020-10-16 05:05:20,476 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=36, PETRI_TRANSITIONS=22} [2020-10-16 05:05:20,477 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2020-10-16 05:05:20,477 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 22 transitions, 83 flow [2020-10-16 05:05:20,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:05:20,477 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:20,477 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:20,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:05:20,477 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:20,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:20,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1823517868, now seen corresponding path program 1 times [2020-10-16 05:05:20,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:20,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218302382] [2020-10-16 05:05:20,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:20,531 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 05:05:20,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218302382] [2020-10-16 05:05:20,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:20,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:05:20,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094400032] [2020-10-16 05:05:20,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:05:20,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:20,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:05:20,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:05:20,534 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 127 [2020-10-16 05:05:20,535 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 22 transitions, 83 flow. Second operand 4 states. [2020-10-16 05:05:20,535 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:20,535 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 127 [2020-10-16 05:05:20,535 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:20,574 INFO L129 PetriNetUnfolder]: 8/72 cut-off events. [2020-10-16 05:05:20,574 INFO L130 PetriNetUnfolder]: For 164/197 co-relation queries the response was YES. [2020-10-16 05:05:20,575 INFO L80 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 72 events. 8/72 cut-off events. For 164/197 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 309 event pairs, 0 based on Foata normal form. 5/73 useless extension candidates. Maximal degree in co-relation 164. Up to 23 conditions per place. [2020-10-16 05:05:20,576 INFO L132 encePairwiseOnDemand]: 122/127 looper letters, 5 selfloop transitions, 4 changer transitions 1/27 dead transitions. [2020-10-16 05:05:20,576 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 27 transitions, 114 flow [2020-10-16 05:05:20,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:05:20,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:05:20,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 420 transitions. [2020-10-16 05:05:20,579 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8267716535433071 [2020-10-16 05:05:20,579 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 420 transitions. [2020-10-16 05:05:20,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 420 transitions. [2020-10-16 05:05:20,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:20,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 420 transitions. [2020-10-16 05:05:20,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:05:20,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:05:20,583 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:05:20,583 INFO L185 Difference]: Start difference. First operand has 36 places, 22 transitions, 83 flow. Second operand 4 states and 420 transitions. [2020-10-16 05:05:20,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 27 transitions, 114 flow [2020-10-16 05:05:20,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 27 transitions, 109 flow, removed 1 selfloop flow, removed 1 redundant places. [2020-10-16 05:05:20,586 INFO L241 Difference]: Finished difference. Result has 40 places, 24 transitions, 104 flow [2020-10-16 05:05:20,586 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=40, PETRI_TRANSITIONS=24} [2020-10-16 05:05:20,587 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2020-10-16 05:05:20,587 INFO L481 AbstractCegarLoop]: Abstraction has has 40 places, 24 transitions, 104 flow [2020-10-16 05:05:20,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:05:20,587 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:20,587 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:20,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:05:20,588 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:20,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:20,588 INFO L82 PathProgramCache]: Analyzing trace with hash -229681398, now seen corresponding path program 1 times [2020-10-16 05:05:20,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:20,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70837603] [2020-10-16 05:05:20,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:20,657 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 05:05:20,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70837603] [2020-10-16 05:05:20,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:20,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:05:20,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212918412] [2020-10-16 05:05:20,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:05:20,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:20,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:05:20,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:05:20,662 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 127 [2020-10-16 05:05:20,663 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 24 transitions, 104 flow. Second operand 4 states. [2020-10-16 05:05:20,663 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:20,663 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 127 [2020-10-16 05:05:20,663 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:20,697 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2020-10-16 05:05:20,697 INFO L130 PetriNetUnfolder]: For 250/294 co-relation queries the response was YES. [2020-10-16 05:05:20,698 INFO L80 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 74 events. 7/74 cut-off events. For 250/294 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 335 event pairs, 2 based on Foata normal form. 5/74 useless extension candidates. Maximal degree in co-relation 190. Up to 19 conditions per place. [2020-10-16 05:05:20,698 INFO L132 encePairwiseOnDemand]: 122/127 looper letters, 4 selfloop transitions, 4 changer transitions 2/27 dead transitions. [2020-10-16 05:05:20,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 27 transitions, 137 flow [2020-10-16 05:05:20,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:05:20,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:05:20,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 415 transitions. [2020-10-16 05:05:20,701 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8169291338582677 [2020-10-16 05:05:20,701 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 415 transitions. [2020-10-16 05:05:20,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 415 transitions. [2020-10-16 05:05:20,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:20,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 415 transitions. [2020-10-16 05:05:20,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:05:20,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:05:20,704 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:05:20,704 INFO L185 Difference]: Start difference. First operand has 40 places, 24 transitions, 104 flow. Second operand 4 states and 415 transitions. [2020-10-16 05:05:20,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 27 transitions, 137 flow [2020-10-16 05:05:20,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 27 transitions, 130 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 05:05:20,708 INFO L241 Difference]: Finished difference. Result has 42 places, 24 transitions, 110 flow [2020-10-16 05:05:20,708 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=42, PETRI_TRANSITIONS=24} [2020-10-16 05:05:20,709 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2020-10-16 05:05:20,709 INFO L481 AbstractCegarLoop]: Abstraction has has 42 places, 24 transitions, 110 flow [2020-10-16 05:05:20,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:05:20,709 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:20,709 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:20,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:05:20,710 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:20,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:20,710 INFO L82 PathProgramCache]: Analyzing trace with hash -696474914, now seen corresponding path program 2 times [2020-10-16 05:05:20,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:20,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717877887] [2020-10-16 05:05:20,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:20,747 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 05:05:20,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717877887] [2020-10-16 05:05:20,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:20,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:05:20,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060688718] [2020-10-16 05:05:20,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:05:20,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:20,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:05:20,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:05:20,750 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 127 [2020-10-16 05:05:20,751 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 24 transitions, 110 flow. Second operand 4 states. [2020-10-16 05:05:20,751 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:20,751 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 127 [2020-10-16 05:05:20,751 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:20,782 INFO L129 PetriNetUnfolder]: 0/54 cut-off events. [2020-10-16 05:05:20,783 INFO L130 PetriNetUnfolder]: For 170/180 co-relation queries the response was YES. [2020-10-16 05:05:20,783 INFO L80 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 54 events. 0/54 cut-off events. For 170/180 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 202 event pairs, 0 based on Foata normal form. 5/58 useless extension candidates. Maximal degree in co-relation 0. Up to 13 conditions per place. [2020-10-16 05:05:20,784 INFO L132 encePairwiseOnDemand]: 123/127 looper letters, 4 selfloop transitions, 3 changer transitions 2/26 dead transitions. [2020-10-16 05:05:20,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 26 transitions, 136 flow [2020-10-16 05:05:20,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:05:20,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:05:20,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 521 transitions. [2020-10-16 05:05:20,786 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8204724409448819 [2020-10-16 05:05:20,786 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 521 transitions. [2020-10-16 05:05:20,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 521 transitions. [2020-10-16 05:05:20,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:20,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 521 transitions. [2020-10-16 05:05:20,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:05:20,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:05:20,790 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:05:20,790 INFO L185 Difference]: Start difference. First operand has 42 places, 24 transitions, 110 flow. Second operand 5 states and 521 transitions. [2020-10-16 05:05:20,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 26 transitions, 136 flow [2020-10-16 05:05:20,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 26 transitions, 124 flow, removed 1 selfloop flow, removed 4 redundant places. [2020-10-16 05:05:20,793 INFO L241 Difference]: Finished difference. Result has 45 places, 24 transitions, 115 flow [2020-10-16 05:05:20,793 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=45, PETRI_TRANSITIONS=24} [2020-10-16 05:05:20,794 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2020-10-16 05:05:20,794 INFO L481 AbstractCegarLoop]: Abstraction has has 45 places, 24 transitions, 115 flow [2020-10-16 05:05:20,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:05:20,794 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:20,794 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:20,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 05:05:20,794 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:20,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:20,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1838072000, now seen corresponding path program 1 times [2020-10-16 05:05:20,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:20,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590996999] [2020-10-16 05:05:20,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:20,863 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 05:05:20,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590996999] [2020-10-16 05:05:20,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:20,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:05:20,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290284920] [2020-10-16 05:05:20,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:05:20,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:20,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:05:20,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:05:20,867 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2020-10-16 05:05:20,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 24 transitions, 115 flow. Second operand 4 states. [2020-10-16 05:05:20,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:20,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2020-10-16 05:05:20,868 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:20,972 INFO L129 PetriNetUnfolder]: 248/471 cut-off events. [2020-10-16 05:05:20,973 INFO L130 PetriNetUnfolder]: For 1596/1680 co-relation queries the response was YES. [2020-10-16 05:05:20,976 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1124 conditions, 471 events. 248/471 cut-off events. For 1596/1680 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 2648 event pairs, 120 based on Foata normal form. 24/458 useless extension candidates. Maximal degree in co-relation 1107. Up to 328 conditions per place. [2020-10-16 05:05:20,978 INFO L132 encePairwiseOnDemand]: 120/127 looper letters, 6 selfloop transitions, 5 changer transitions 9/37 dead transitions. [2020-10-16 05:05:20,978 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 37 transitions, 181 flow [2020-10-16 05:05:20,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:05:20,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:05:20,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 492 transitions. [2020-10-16 05:05:20,980 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7748031496062993 [2020-10-16 05:05:20,981 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 492 transitions. [2020-10-16 05:05:20,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 492 transitions. [2020-10-16 05:05:20,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:20,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 492 transitions. [2020-10-16 05:05:20,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:05:20,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:05:20,984 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:05:20,984 INFO L185 Difference]: Start difference. First operand has 45 places, 24 transitions, 115 flow. Second operand 5 states and 492 transitions. [2020-10-16 05:05:20,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 37 transitions, 181 flow [2020-10-16 05:05:20,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 37 transitions, 172 flow, removed 3 selfloop flow, removed 3 redundant places. [2020-10-16 05:05:20,988 INFO L241 Difference]: Finished difference. Result has 47 places, 28 transitions, 151 flow [2020-10-16 05:05:20,988 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=47, PETRI_TRANSITIONS=28} [2020-10-16 05:05:20,988 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2020-10-16 05:05:20,988 INFO L481 AbstractCegarLoop]: Abstraction has has 47 places, 28 transitions, 151 flow [2020-10-16 05:05:20,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:05:20,989 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:20,989 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:20,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 05:05:20,989 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:20,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:20,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1361834896, now seen corresponding path program 1 times [2020-10-16 05:05:20,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:20,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832425452] [2020-10-16 05:05:20,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:21,052 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 05:05:21,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832425452] [2020-10-16 05:05:21,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:21,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:05:21,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267991779] [2020-10-16 05:05:21,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:05:21,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:21,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:05:21,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:05:21,056 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2020-10-16 05:05:21,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 28 transitions, 151 flow. Second operand 5 states. [2020-10-16 05:05:21,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:21,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2020-10-16 05:05:21,057 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:21,161 INFO L129 PetriNetUnfolder]: 174/357 cut-off events. [2020-10-16 05:05:21,161 INFO L130 PetriNetUnfolder]: For 1176/1572 co-relation queries the response was YES. [2020-10-16 05:05:21,163 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1407 conditions, 357 events. 174/357 cut-off events. For 1176/1572 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 1885 event pairs, 30 based on Foata normal form. 58/397 useless extension candidates. Maximal degree in co-relation 1388. Up to 316 conditions per place. [2020-10-16 05:05:21,164 INFO L132 encePairwiseOnDemand]: 120/127 looper letters, 6 selfloop transitions, 9 changer transitions 9/41 dead transitions. [2020-10-16 05:05:21,165 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 41 transitions, 275 flow [2020-10-16 05:05:21,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:05:21,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:05:21,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 590 transitions. [2020-10-16 05:05:21,168 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7742782152230971 [2020-10-16 05:05:21,168 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 590 transitions. [2020-10-16 05:05:21,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 590 transitions. [2020-10-16 05:05:21,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:21,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 590 transitions. [2020-10-16 05:05:21,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:05:21,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:05:21,172 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:05:21,173 INFO L185 Difference]: Start difference. First operand has 47 places, 28 transitions, 151 flow. Second operand 6 states and 590 transitions. [2020-10-16 05:05:21,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 41 transitions, 275 flow [2020-10-16 05:05:21,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 41 transitions, 268 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 05:05:21,177 INFO L241 Difference]: Finished difference. Result has 51 places, 32 transitions, 216 flow [2020-10-16 05:05:21,177 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=51, PETRI_TRANSITIONS=32} [2020-10-16 05:05:21,177 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2020-10-16 05:05:21,177 INFO L481 AbstractCegarLoop]: Abstraction has has 51 places, 32 transitions, 216 flow [2020-10-16 05:05:21,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:05:21,178 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:21,178 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:21,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 05:05:21,178 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:21,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:21,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1401255375, now seen corresponding path program 1 times [2020-10-16 05:05:21,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:21,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089669346] [2020-10-16 05:05:21,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:21,251 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 05:05:21,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089669346] [2020-10-16 05:05:21,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:21,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 05:05:21,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238990467] [2020-10-16 05:05:21,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 05:05:21,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:21,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 05:05:21,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 05:05:21,273 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2020-10-16 05:05:21,274 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 32 transitions, 216 flow. Second operand 6 states. [2020-10-16 05:05:21,274 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:21,274 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2020-10-16 05:05:21,274 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:21,376 INFO L129 PetriNetUnfolder]: 102/230 cut-off events. [2020-10-16 05:05:21,377 INFO L130 PetriNetUnfolder]: For 983/1291 co-relation queries the response was YES. [2020-10-16 05:05:21,377 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1229 conditions, 230 events. 102/230 cut-off events. For 983/1291 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1117 event pairs, 3 based on Foata normal form. 65/284 useless extension candidates. Maximal degree in co-relation 1207. Up to 204 conditions per place. [2020-10-16 05:05:21,379 INFO L132 encePairwiseOnDemand]: 120/127 looper letters, 4 selfloop transitions, 13 changer transitions 11/45 dead transitions. [2020-10-16 05:05:21,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 45 transitions, 398 flow [2020-10-16 05:05:21,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 05:05:21,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 05:05:21,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 688 transitions. [2020-10-16 05:05:21,382 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7739032620922385 [2020-10-16 05:05:21,382 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 688 transitions. [2020-10-16 05:05:21,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 688 transitions. [2020-10-16 05:05:21,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:21,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 688 transitions. [2020-10-16 05:05:21,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 05:05:21,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 05:05:21,386 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 05:05:21,386 INFO L185 Difference]: Start difference. First operand has 51 places, 32 transitions, 216 flow. Second operand 7 states and 688 transitions. [2020-10-16 05:05:21,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 45 transitions, 398 flow [2020-10-16 05:05:21,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 336 flow, removed 26 selfloop flow, removed 4 redundant places. [2020-10-16 05:05:21,392 INFO L241 Difference]: Finished difference. Result has 54 places, 34 transitions, 242 flow [2020-10-16 05:05:21,392 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=242, PETRI_PLACES=54, PETRI_TRANSITIONS=34} [2020-10-16 05:05:21,392 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 21 predicate places. [2020-10-16 05:05:21,393 INFO L481 AbstractCegarLoop]: Abstraction has has 54 places, 34 transitions, 242 flow [2020-10-16 05:05:21,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 05:05:21,393 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:21,393 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:21,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 05:05:21,393 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:21,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:21,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1574261773, now seen corresponding path program 1 times [2020-10-16 05:05:21,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:21,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095661731] [2020-10-16 05:05:21,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:21,461 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 05:05:21,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095661731] [2020-10-16 05:05:21,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:21,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:05:21,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812905059] [2020-10-16 05:05:21,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:05:21,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:21,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:05:21,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:05:21,465 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2020-10-16 05:05:21,466 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 34 transitions, 242 flow. Second operand 7 states. [2020-10-16 05:05:21,466 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:21,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2020-10-16 05:05:21,466 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:21,546 INFO L129 PetriNetUnfolder]: 52/141 cut-off events. [2020-10-16 05:05:21,546 INFO L130 PetriNetUnfolder]: For 580/853 co-relation queries the response was YES. [2020-10-16 05:05:21,546 INFO L80 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 141 events. 52/141 cut-off events. For 580/853 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 622 event pairs, 0 based on Foata normal form. 67/196 useless extension candidates. Maximal degree in co-relation 715. Up to 108 conditions per place. [2020-10-16 05:05:21,547 INFO L132 encePairwiseOnDemand]: 120/127 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2020-10-16 05:05:21,547 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 36 transitions, 292 flow [2020-10-16 05:05:21,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 05:05:21,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-16 05:05:21,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 772 transitions. [2020-10-16 05:05:21,551 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7598425196850394 [2020-10-16 05:05:21,551 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 772 transitions. [2020-10-16 05:05:21,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 772 transitions. [2020-10-16 05:05:21,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:21,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 772 transitions. [2020-10-16 05:05:21,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-16 05:05:21,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-16 05:05:21,556 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-16 05:05:21,556 INFO L185 Difference]: Start difference. First operand has 54 places, 34 transitions, 242 flow. Second operand 8 states and 772 transitions. [2020-10-16 05:05:21,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 36 transitions, 292 flow [2020-10-16 05:05:21,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 36 transitions, 227 flow, removed 20 selfloop flow, removed 8 redundant places. [2020-10-16 05:05:21,560 INFO L241 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2020-10-16 05:05:21,560 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2020-10-16 05:05:21,561 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2020-10-16 05:05:21,561 INFO L481 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2020-10-16 05:05:21,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:05:21,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 05:05:21,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:05:21 BasicIcfg [2020-10-16 05:05:21,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:05:21,568 INFO L168 Benchmark]: Toolchain (without parser) took 4890.86 ms. Allocated memory was 251.1 MB in the beginning and 423.6 MB in the end (delta: 172.5 MB). Free memory was 205.4 MB in the beginning and 335.6 MB in the end (delta: -130.2 MB). Peak memory consumption was 42.3 MB. Max. memory is 14.2 GB. [2020-10-16 05:05:21,569 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 251.1 MB. Free memory is still 227.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:05:21,570 INFO L168 Benchmark]: CACSL2BoogieTranslator took 688.17 ms. Allocated memory was 251.1 MB in the beginning and 314.0 MB in the end (delta: 62.9 MB). Free memory was 205.4 MB in the beginning and 265.5 MB in the end (delta: -60.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 14.2 GB. [2020-10-16 05:05:21,571 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.47 ms. Allocated memory is still 314.0 MB. Free memory was 265.5 MB in the beginning and 263.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:05:21,572 INFO L168 Benchmark]: Boogie Preprocessor took 26.33 ms. Allocated memory is still 314.0 MB. Free memory was 263.0 MB in the beginning and 260.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:05:21,572 INFO L168 Benchmark]: RCFGBuilder took 458.58 ms. Allocated memory is still 314.0 MB. Free memory was 260.5 MB in the beginning and 236.1 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-16 05:05:21,573 INFO L168 Benchmark]: TraceAbstraction took 3651.11 ms. Allocated memory was 314.0 MB in the beginning and 423.6 MB in the end (delta: 109.6 MB). Free memory was 236.1 MB in the beginning and 335.6 MB in the end (delta: -99.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 14.2 GB. [2020-10-16 05:05:21,577 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 251.1 MB. Free memory is still 227.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 688.17 ms. Allocated memory was 251.1 MB in the beginning and 314.0 MB in the end (delta: 62.9 MB). Free memory was 205.4 MB in the beginning and 265.5 MB in the end (delta: -60.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 61.47 ms. Allocated memory is still 314.0 MB. Free memory was 265.5 MB in the beginning and 263.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.33 ms. Allocated memory is still 314.0 MB. Free memory was 263.0 MB in the beginning and 260.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 458.58 ms. Allocated memory is still 314.0 MB. Free memory was 260.5 MB in the beginning and 236.1 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3651.11 ms. Allocated memory was 314.0 MB in the beginning and 423.6 MB in the end (delta: 109.6 MB). Free memory was 236.1 MB in the beginning and 335.6 MB in the end (delta: -99.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 821 VarBasedMoverChecksPositive, 53 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 86 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 75 PlacesBefore, 33 PlacesAfterwards, 63 TransitionsBefore, 21 TransitionsAfterwards, 1250 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 47 TotalNumberOfCompositions, 2211 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 79 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: SAFE, OverallTime: 3.5s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 43 SDtfs, 26 SDslu, 21 SDs, 0 SdLazy, 205 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=242occurred in iteration=10, 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, 0.5s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 5373 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...