/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/safe029_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:09:46,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:09:46,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:09:47,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:09:47,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:09:47,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:09:47,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:09:47,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:09:47,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:09:47,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:09:47,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:09:47,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:09:47,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:09:47,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:09:47,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:09:47,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:09:47,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:09:47,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:09:47,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:09:47,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:09:47,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:09:47,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:09:47,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:09:47,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:09:47,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 05:09:47,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 05:09:47,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 05:09:47,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 05:09:47,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 05:09:47,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 05:09:47,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:09:47,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:09:47,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:09:47,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:09:47,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:09:47,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:09:47,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:09:47,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:09:47,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:09:47,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:09:47,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:09:47,074 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 05:09:47,111 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:09:47,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:09:47,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:09:47,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:09:47,114 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:09:47,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:09:47,114 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:09:47,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:09:47,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:09:47,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:09:47,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:09:47,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:09:47,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:09:47,116 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:09:47,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:09:47,117 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:09:47,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:09:47,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:09:47,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:09:47,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:09:47,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:09:47,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:09:47,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:09:47,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:09:47,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:09:47,119 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:09:47,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:09:47,119 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:09:47,119 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:09:47,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:09:47,420 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:09:47,423 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:09:47,424 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:09:47,424 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:09:47,425 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i [2020-10-16 05:09:47,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc4557820/f7951869bf0048be92208f12d4667b26/FLAG6fc3b9ea8 [2020-10-16 05:09:47,972 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:09:47,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i [2020-10-16 05:09:47,988 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc4557820/f7951869bf0048be92208f12d4667b26/FLAG6fc3b9ea8 [2020-10-16 05:09:48,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc4557820/f7951869bf0048be92208f12d4667b26 [2020-10-16 05:09:48,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:09:48,347 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:09:48,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:09:48,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:09:48,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:09:48,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:09:48" (1/1) ... [2020-10-16 05:09:48,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465e1690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:09:48, skipping insertion in model container [2020-10-16 05:09:48,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:09:48" (1/1) ... [2020-10-16 05:09:48,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:09:48,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:09:48,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:09:48,896 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:09:48,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:09:49,043 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:09:49,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:09:49 WrapperNode [2020-10-16 05:09:49,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:09:49,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:09:49,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:09:49,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:09:49,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:09:49" (1/1) ... [2020-10-16 05:09:49,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:09:49" (1/1) ... [2020-10-16 05:09:49,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:09:49,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:09:49,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:09:49,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:09:49,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:09:49" (1/1) ... [2020-10-16 05:09:49,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:09:49" (1/1) ... [2020-10-16 05:09:49,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:09:49" (1/1) ... [2020-10-16 05:09:49,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:09:49" (1/1) ... [2020-10-16 05:09:49,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:09:49" (1/1) ... [2020-10-16 05:09:49,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:09:49" (1/1) ... [2020-10-16 05:09:49,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:09:49" (1/1) ... [2020-10-16 05:09:49,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:09:49,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:09:49,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:09:49,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:09:49,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:09:49" (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 05:09:49,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:09:49,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:09:49,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:09:49,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:09:49,172 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:09:49,173 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:09:49,173 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:09:49,173 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:09:49,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:09:49,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:09:49,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:09:49,175 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 05:09:49,436 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:09:49,437 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:09:49,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:09:49 BoogieIcfgContainer [2020-10-16 05:09:49,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:09:49,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:09:49,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:09:49,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:09:49,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:09:48" (1/3) ... [2020-10-16 05:09:49,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f43736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:09:49, skipping insertion in model container [2020-10-16 05:09:49,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:09:49" (2/3) ... [2020-10-16 05:09:49,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f43736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:09:49, skipping insertion in model container [2020-10-16 05:09:49,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:09:49" (3/3) ... [2020-10-16 05:09:49,447 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_tso.opt.i [2020-10-16 05:09:49,461 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:09:49,469 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:09:49,471 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:09:49,496 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:49,497 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:49,497 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:49,497 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:49,498 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:49,498 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:49,499 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:49,499 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:49,499 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:49,499 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:49,500 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:49,500 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:49,504 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:49,504 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:49,505 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:49,505 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:49,509 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:49,510 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:49,510 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:49,510 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:09:49,528 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 05:09:49,549 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:09:49,549 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:09:49,549 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:09:49,550 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:09:49,550 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:09:49,550 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:09:49,550 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:09:49,550 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:09:49,562 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 54 transitions, 118 flow [2020-10-16 05:09:49,625 INFO L129 PetriNetUnfolder]: 2/52 cut-off events. [2020-10-16 05:09:49,631 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:09:49,636 INFO L80 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 52 events. 2/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-10-16 05:09:49,636 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 54 transitions, 118 flow [2020-10-16 05:09:49,647 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 43 transitions, 92 flow [2020-10-16 05:09:49,649 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:09:49,652 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 43 transitions, 92 flow [2020-10-16 05:09:49,655 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 43 transitions, 92 flow [2020-10-16 05:09:49,655 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 49 places, 43 transitions, 92 flow [2020-10-16 05:09:49,690 INFO L129 PetriNetUnfolder]: 1/43 cut-off events. [2020-10-16 05:09:49,690 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:09:49,691 INFO L80 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2020-10-16 05:09:49,695 INFO L117 LiptonReduction]: Number of co-enabled transitions 456 [2020-10-16 05:09:50,723 INFO L132 LiptonReduction]: Checked pairs total: 890 [2020-10-16 05:09:50,723 INFO L134 LiptonReduction]: Total number of compositions: 35 [2020-10-16 05:09:50,726 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1079 [2020-10-16 05:09:50,732 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2020-10-16 05:09:50,732 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:09:50,732 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:09:50,733 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 05:09:50,734 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:09:50,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:09:50,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1383000526, now seen corresponding path program 1 times [2020-10-16 05:09:50,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:09:50,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653720811] [2020-10-16 05:09:50,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:09:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:09:50,943 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 05:09:50,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653720811] [2020-10-16 05:09:50,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:09:50,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:09:50,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743561595] [2020-10-16 05:09:50,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:09:50,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:09:50,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:09:50,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:09:50,977 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 89 [2020-10-16 05:09:50,979 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 32 flow. Second operand 3 states. [2020-10-16 05:09:50,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:09:50,980 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 89 [2020-10-16 05:09:50,981 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:09:51,001 INFO L129 PetriNetUnfolder]: 3/19 cut-off events. [2020-10-16 05:09:51,001 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:09:51,002 INFO L80 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 19 events. 3/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 27 event pairs, 1 based on Foata normal form. 5/24 useless extension candidates. Maximal degree in co-relation 28. Up to 10 conditions per place. [2020-10-16 05:09:51,003 INFO L132 encePairwiseOnDemand]: 84/89 looper letters, 3 selfloop transitions, 3 changer transitions 0/14 dead transitions. [2020-10-16 05:09:51,003 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 46 flow [2020-10-16 05:09:51,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:09:51,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:09:51,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 216 transitions. [2020-10-16 05:09:51,018 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8089887640449438 [2020-10-16 05:09:51,019 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 216 transitions. [2020-10-16 05:09:51,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 216 transitions. [2020-10-16 05:09:51,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:09:51,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 216 transitions. [2020-10-16 05:09:51,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:09:51,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:09:51,033 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:09:51,035 INFO L185 Difference]: Start difference. First operand has 19 places, 13 transitions, 32 flow. Second operand 3 states and 216 transitions. [2020-10-16 05:09:51,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 46 flow [2020-10-16 05:09:51,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 14 transitions, 44 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:09:51,041 INFO L241 Difference]: Finished difference. Result has 20 places, 14 transitions, 47 flow [2020-10-16 05:09:51,044 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2020-10-16 05:09:51,045 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2020-10-16 05:09:51,045 INFO L481 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 47 flow [2020-10-16 05:09:51,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:09:51,045 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:09:51,045 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:09:51,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:09:51,046 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:09:51,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:09:51,046 INFO L82 PathProgramCache]: Analyzing trace with hash -76657295, now seen corresponding path program 1 times [2020-10-16 05:09:51,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:09:51,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752243032] [2020-10-16 05:09:51,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:09:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:09:51,092 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 05:09:51,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752243032] [2020-10-16 05:09:51,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:09:51,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:09:51,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112249179] [2020-10-16 05:09:51,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:09:51,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:09:51,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:09:51,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:09:51,097 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 89 [2020-10-16 05:09:51,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 47 flow. Second operand 3 states. [2020-10-16 05:09:51,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:09:51,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 89 [2020-10-16 05:09:51,098 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:09:51,119 INFO L129 PetriNetUnfolder]: 8/31 cut-off events. [2020-10-16 05:09:51,119 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 05:09:51,119 INFO L80 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 31 events. 8/31 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 71 event pairs, 3 based on Foata normal form. 1/31 useless extension candidates. Maximal degree in co-relation 60. Up to 15 conditions per place. [2020-10-16 05:09:51,120 INFO L132 encePairwiseOnDemand]: 85/89 looper letters, 3 selfloop transitions, 3 changer transitions 0/16 dead transitions. [2020-10-16 05:09:51,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 16 transitions, 63 flow [2020-10-16 05:09:51,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:09:51,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:09:51,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 214 transitions. [2020-10-16 05:09:51,123 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8014981273408239 [2020-10-16 05:09:51,123 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 214 transitions. [2020-10-16 05:09:51,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 214 transitions. [2020-10-16 05:09:51,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:09:51,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 214 transitions. [2020-10-16 05:09:51,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:09:51,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:09:51,126 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:09:51,126 INFO L185 Difference]: Start difference. First operand has 20 places, 14 transitions, 47 flow. Second operand 3 states and 214 transitions. [2020-10-16 05:09:51,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 16 transitions, 63 flow [2020-10-16 05:09:51,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 16 transitions, 60 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:09:51,128 INFO L241 Difference]: Finished difference. Result has 22 places, 16 transitions, 63 flow [2020-10-16 05:09:51,128 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2020-10-16 05:09:51,129 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2020-10-16 05:09:51,129 INFO L481 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 63 flow [2020-10-16 05:09:51,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:09:51,129 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:09:51,129 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:09:51,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:09:51,130 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:09:51,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:09:51,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1918589859, now seen corresponding path program 1 times [2020-10-16 05:09:51,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:09:51,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607762460] [2020-10-16 05:09:51,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:09:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:09:51,167 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 05:09:51,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607762460] [2020-10-16 05:09:51,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:09:51,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:09:51,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415856307] [2020-10-16 05:09:51,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:09:51,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:09:51,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:09:51,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:09:51,171 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 89 [2020-10-16 05:09:51,171 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 63 flow. Second operand 3 states. [2020-10-16 05:09:51,171 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:09:51,171 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 89 [2020-10-16 05:09:51,172 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:09:51,191 INFO L129 PetriNetUnfolder]: 4/31 cut-off events. [2020-10-16 05:09:51,191 INFO L130 PetriNetUnfolder]: For 23/31 co-relation queries the response was YES. [2020-10-16 05:09:51,191 INFO L80 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 31 events. 4/31 cut-off events. For 23/31 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 76 event pairs, 2 based on Foata normal form. 5/36 useless extension candidates. Maximal degree in co-relation 68. Up to 14 conditions per place. [2020-10-16 05:09:51,192 INFO L132 encePairwiseOnDemand]: 86/89 looper letters, 3 selfloop transitions, 3 changer transitions 0/16 dead transitions. [2020-10-16 05:09:51,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 16 transitions, 75 flow [2020-10-16 05:09:51,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:09:51,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:09:51,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2020-10-16 05:09:51,194 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.797752808988764 [2020-10-16 05:09:51,194 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 213 transitions. [2020-10-16 05:09:51,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 213 transitions. [2020-10-16 05:09:51,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:09:51,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 213 transitions. [2020-10-16 05:09:51,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:09:51,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:09:51,197 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:09:51,197 INFO L185 Difference]: Start difference. First operand has 22 places, 16 transitions, 63 flow. Second operand 3 states and 213 transitions. [2020-10-16 05:09:51,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 16 transitions, 75 flow [2020-10-16 05:09:51,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 16 transitions, 72 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:09:51,199 INFO L241 Difference]: Finished difference. Result has 24 places, 16 transitions, 71 flow [2020-10-16 05:09:51,199 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=24, PETRI_TRANSITIONS=16} [2020-10-16 05:09:51,199 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2020-10-16 05:09:51,199 INFO L481 AbstractCegarLoop]: Abstraction has has 24 places, 16 transitions, 71 flow [2020-10-16 05:09:51,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:09:51,200 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:09:51,200 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:09:51,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:09:51,200 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:09:51,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:09:51,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1917876084, now seen corresponding path program 1 times [2020-10-16 05:09:51,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:09:51,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847595198] [2020-10-16 05:09:51,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:09:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:09:51,282 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 05:09:51,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847595198] [2020-10-16 05:09:51,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:09:51,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:09:51,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418820897] [2020-10-16 05:09:51,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:09:51,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:09:51,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:09:51,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:09:51,288 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 89 [2020-10-16 05:09:51,288 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 16 transitions, 71 flow. Second operand 4 states. [2020-10-16 05:09:51,288 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:09:51,288 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 89 [2020-10-16 05:09:51,288 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:09:51,330 INFO L129 PetriNetUnfolder]: 13/55 cut-off events. [2020-10-16 05:09:51,330 INFO L130 PetriNetUnfolder]: For 91/107 co-relation queries the response was YES. [2020-10-16 05:09:51,331 INFO L80 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 55 events. 13/55 cut-off events. For 91/107 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 201 event pairs, 4 based on Foata normal form. 15/69 useless extension candidates. Maximal degree in co-relation 129. Up to 30 conditions per place. [2020-10-16 05:09:51,331 INFO L132 encePairwiseOnDemand]: 84/89 looper letters, 4 selfloop transitions, 5 changer transitions 3/23 dead transitions. [2020-10-16 05:09:51,331 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 23 transitions, 109 flow [2020-10-16 05:09:51,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:09:51,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:09:51,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 329 transitions. [2020-10-16 05:09:51,334 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7393258426966293 [2020-10-16 05:09:51,334 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 329 transitions. [2020-10-16 05:09:51,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 329 transitions. [2020-10-16 05:09:51,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:09:51,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 329 transitions. [2020-10-16 05:09:51,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:09:51,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:09:51,337 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:09:51,337 INFO L185 Difference]: Start difference. First operand has 24 places, 16 transitions, 71 flow. Second operand 5 states and 329 transitions. [2020-10-16 05:09:51,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 23 transitions, 109 flow [2020-10-16 05:09:51,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 23 transitions, 104 flow, removed 1 selfloop flow, removed 1 redundant places. [2020-10-16 05:09:51,339 INFO L241 Difference]: Finished difference. Result has 30 places, 20 transitions, 103 flow [2020-10-16 05:09:51,339 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=103, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2020-10-16 05:09:51,340 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 11 predicate places. [2020-10-16 05:09:51,340 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 103 flow [2020-10-16 05:09:51,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:09:51,340 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:09:51,340 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:09:51,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:09:51,341 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:09:51,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:09:51,341 INFO L82 PathProgramCache]: Analyzing trace with hash -675834332, now seen corresponding path program 1 times [2020-10-16 05:09:51,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:09:51,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550781787] [2020-10-16 05:09:51,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:09:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:09:51,367 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 05:09:51,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550781787] [2020-10-16 05:09:51,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:09:51,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:09:51,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023040253] [2020-10-16 05:09:51,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:09:51,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:09:51,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:09:51,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:09:51,370 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 89 [2020-10-16 05:09:51,370 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 103 flow. Second operand 3 states. [2020-10-16 05:09:51,370 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:09:51,371 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 89 [2020-10-16 05:09:51,371 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:09:51,388 INFO L129 PetriNetUnfolder]: 3/48 cut-off events. [2020-10-16 05:09:51,388 INFO L130 PetriNetUnfolder]: For 142/157 co-relation queries the response was YES. [2020-10-16 05:09:51,388 INFO L80 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 48 events. 3/48 cut-off events. For 142/157 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 197 event pairs, 0 based on Foata normal form. 10/56 useless extension candidates. Maximal degree in co-relation 132. Up to 24 conditions per place. [2020-10-16 05:09:51,389 INFO L132 encePairwiseOnDemand]: 86/89 looper letters, 3 selfloop transitions, 3 changer transitions 2/20 dead transitions. [2020-10-16 05:09:51,389 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 20 transitions, 115 flow [2020-10-16 05:09:51,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:09:51,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:09:51,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2020-10-16 05:09:51,391 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.797752808988764 [2020-10-16 05:09:51,391 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 213 transitions. [2020-10-16 05:09:51,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 213 transitions. [2020-10-16 05:09:51,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:09:51,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 213 transitions. [2020-10-16 05:09:51,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:09:51,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:09:51,393 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:09:51,393 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 103 flow. Second operand 3 states and 213 transitions. [2020-10-16 05:09:51,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 20 transitions, 115 flow [2020-10-16 05:09:51,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 20 transitions, 115 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 05:09:51,395 INFO L241 Difference]: Finished difference. Result has 33 places, 18 transitions, 102 flow [2020-10-16 05:09:51,396 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=33, PETRI_TRANSITIONS=18} [2020-10-16 05:09:51,396 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 14 predicate places. [2020-10-16 05:09:51,396 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 18 transitions, 102 flow [2020-10-16 05:09:51,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:09:51,396 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:09:51,397 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:09:51,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:09:51,397 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:09:51,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:09:51,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1610893064, now seen corresponding path program 1 times [2020-10-16 05:09:51,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:09:51,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277869119] [2020-10-16 05:09:51,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:09:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:09:51,466 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 05:09:51,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277869119] [2020-10-16 05:09:51,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:09:51,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:09:51,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259779435] [2020-10-16 05:09:51,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:09:51,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:09:51,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:09:51,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:09:51,470 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 89 [2020-10-16 05:09:51,471 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 18 transitions, 102 flow. Second operand 5 states. [2020-10-16 05:09:51,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:09:51,471 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 89 [2020-10-16 05:09:51,471 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:09:51,510 INFO L129 PetriNetUnfolder]: 6/41 cut-off events. [2020-10-16 05:09:51,510 INFO L130 PetriNetUnfolder]: For 66/76 co-relation queries the response was YES. [2020-10-16 05:09:51,510 INFO L80 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 41 events. 6/41 cut-off events. For 66/76 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 135 event pairs, 0 based on Foata normal form. 8/49 useless extension candidates. Maximal degree in co-relation 133. Up to 22 conditions per place. [2020-10-16 05:09:51,511 INFO L132 encePairwiseOnDemand]: 84/89 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2020-10-16 05:09:51,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 20 transitions, 120 flow [2020-10-16 05:09:51,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:09:51,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:09:51,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 388 transitions. [2020-10-16 05:09:51,513 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7265917602996255 [2020-10-16 05:09:51,514 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 388 transitions. [2020-10-16 05:09:51,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 388 transitions. [2020-10-16 05:09:51,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:09:51,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 388 transitions. [2020-10-16 05:09:51,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:09:51,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:09:51,517 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:09:51,517 INFO L185 Difference]: Start difference. First operand has 33 places, 18 transitions, 102 flow. Second operand 6 states and 388 transitions. [2020-10-16 05:09:51,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 20 transitions, 120 flow [2020-10-16 05:09:51,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 20 transitions, 105 flow, removed 3 selfloop flow, removed 4 redundant places. [2020-10-16 05:09:51,519 INFO L241 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2020-10-16 05:09:51,519 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2020-10-16 05:09:51,519 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 12 predicate places. [2020-10-16 05:09:51,519 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2020-10-16 05:09:51,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:09:51,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:09:51,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:09:51 BasicIcfg [2020-10-16 05:09:51,524 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:09:51,527 INFO L168 Benchmark]: Toolchain (without parser) took 3179.25 ms. Allocated memory was 253.8 MB in the beginning and 360.2 MB in the end (delta: 106.4 MB). Free memory was 208.9 MB in the beginning and 170.1 MB in the end (delta: 38.8 MB). Peak memory consumption was 145.2 MB. Max. memory is 14.2 GB. [2020-10-16 05:09:51,528 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 253.8 MB. Free memory was 231.8 MB in the beginning and 231.0 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-16 05:09:51,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 697.12 ms. Allocated memory was 253.8 MB in the beginning and 320.9 MB in the end (delta: 67.1 MB). Free memory was 208.9 MB in the beginning and 272.5 MB in the end (delta: -63.6 MB). Peak memory consumption was 27.1 MB. Max. memory is 14.2 GB. [2020-10-16 05:09:51,530 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.88 ms. Allocated memory is still 320.9 MB. Free memory was 272.5 MB in the beginning and 270.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-16 05:09:51,531 INFO L168 Benchmark]: Boogie Preprocessor took 23.34 ms. Allocated memory is still 320.9 MB. Free memory was 270.8 MB in the beginning and 269.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-16 05:09:51,531 INFO L168 Benchmark]: RCFGBuilder took 324.72 ms. Allocated memory is still 320.9 MB. Free memory was 269.0 MB in the beginning and 248.6 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:09:51,532 INFO L168 Benchmark]: TraceAbstraction took 2083.25 ms. Allocated memory was 320.9 MB in the beginning and 360.2 MB in the end (delta: 39.3 MB). Free memory was 248.6 MB in the beginning and 170.1 MB in the end (delta: 78.4 MB). Peak memory consumption was 117.8 MB. Max. memory is 14.2 GB. [2020-10-16 05:09:51,537 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 253.8 MB. Free memory was 231.8 MB in the beginning and 231.0 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 697.12 ms. Allocated memory was 253.8 MB in the beginning and 320.9 MB in the end (delta: 67.1 MB). Free memory was 208.9 MB in the beginning and 272.5 MB in the end (delta: -63.6 MB). Peak memory consumption was 27.1 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 45.88 ms. Allocated memory is still 320.9 MB. Free memory was 272.5 MB in the beginning and 270.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 23.34 ms. Allocated memory is still 320.9 MB. Free memory was 270.8 MB in the beginning and 269.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 324.72 ms. Allocated memory is still 320.9 MB. Free memory was 269.0 MB in the beginning and 248.6 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2083.25 ms. Allocated memory was 320.9 MB in the beginning and 360.2 MB in the end (delta: 39.3 MB). Free memory was 248.6 MB in the beginning and 170.1 MB in the end (delta: 78.4 MB). Peak memory consumption was 117.8 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 321 VarBasedMoverChecksPositive, 28 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 39 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.0s, 49 PlacesBefore, 19 PlacesAfterwards, 43 TransitionsBefore, 13 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 5 FixpointIterations, 11 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 35 TotalNumberOfCompositions, 890 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 3 procedures, 53 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: 1.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.1s, HoareTripleCheckerStatistics: 22 SDtfs, 4 SDslu, 3 SDs, 0 SdLazy, 44 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 848 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...