/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 12:30:31,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 12:30:31,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 12:30:32,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 12:30:32,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 12:30:32,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 12:30:32,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 12:30:32,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 12:30:32,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 12:30:32,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 12:30:32,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 12:30:32,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 12:30:32,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 12:30:32,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 12:30:32,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 12:30:32,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 12:30:32,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 12:30:32,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 12:30:32,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 12:30:32,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 12:30:32,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 12:30:32,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 12:30:32,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 12:30:32,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 12:30:32,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-10 12:30:32,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 12:30:32,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 12:30:32,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 12:30:32,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 12:30:32,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 12:30:32,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 12:30:32,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 12:30:32,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 12:30:32,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 12:30:32,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 12:30:32,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 12:30:32,075 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-NoLbe.epf [2021-06-10 12:30:32,114 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 12:30:32,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 12:30:32,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 12:30:32,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 12:30:32,118 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 12:30:32,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 12:30:32,118 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 12:30:32,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 12:30:32,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 12:30:32,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 12:30:32,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 12:30:32,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 12:30:32,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 12:30:32,120 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 12:30:32,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 12:30:32,120 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 12:30:32,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 12:30:32,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 12:30:32,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 12:30:32,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 12:30:32,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 12:30:32,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 12:30:32,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 12:30:32,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 12:30:32,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 12:30:32,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 12:30:32,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 12:30:32,122 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 12:30:32,122 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 12:30:32,123 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 12:30:32,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 12:30:32,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 12:30:32,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 12:30:32,461 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 12:30:32,464 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 12:30:32,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2021-06-10 12:30:32,539 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef2487e31/a4c64814d39248ae9c2d22df9b8662eb/FLAG5d438f348 [2021-06-10 12:30:33,059 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 12:30:33,059 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2021-06-10 12:30:33,078 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef2487e31/a4c64814d39248ae9c2d22df9b8662eb/FLAG5d438f348 [2021-06-10 12:30:33,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef2487e31/a4c64814d39248ae9c2d22df9b8662eb [2021-06-10 12:30:33,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 12:30:33,362 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 12:30:33,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 12:30:33,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 12:30:33,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 12:30:33,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:30:33" (1/1) ... [2021-06-10 12:30:33,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6278a138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:30:33, skipping insertion in model container [2021-06-10 12:30:33,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:30:33" (1/1) ... [2021-06-10 12:30:33,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 12:30:33,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 12:30:33,588 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i[950,963] [2021-06-10 12:30:33,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:30:33,769 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 12:30:33,779 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i[950,963] [2021-06-10 12:30:33,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:30:33,889 INFO L208 MainTranslator]: Completed translation [2021-06-10 12:30:33,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:30:33 WrapperNode [2021-06-10 12:30:33,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 12:30:33,892 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 12:30:33,892 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 12:30:33,893 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 12:30:33,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:30:33" (1/1) ... [2021-06-10 12:30:33,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:30:33" (1/1) ... [2021-06-10 12:30:33,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 12:30:33,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 12:30:33,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 12:30:33,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 12:30:33,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:30:33" (1/1) ... [2021-06-10 12:30:33,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:30:33" (1/1) ... [2021-06-10 12:30:33,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:30:33" (1/1) ... [2021-06-10 12:30:33,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:30:33" (1/1) ... [2021-06-10 12:30:33,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:30:33" (1/1) ... [2021-06-10 12:30:33,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:30:33" (1/1) ... [2021-06-10 12:30:33,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:30:33" (1/1) ... [2021-06-10 12:30:33,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 12:30:33,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 12:30:33,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 12:30:33,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 12:30:33,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:30:33" (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 [2021-06-10 12:30:34,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 12:30:34,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 12:30:34,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 12:30:34,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 12:30:34,068 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 12:30:34,069 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 12:30:34,069 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 12:30:34,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 12:30:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 12:30:34,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 12:30:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 12:30:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 12:30:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 12:30:34,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 12:30:34,072 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 12:30:34,427 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 12:30:34,427 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 12:30:34,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:30:34 BoogieIcfgContainer [2021-06-10 12:30:34,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 12:30:34,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 12:30:34,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 12:30:34,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 12:30:34,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 12:30:33" (1/3) ... [2021-06-10 12:30:34,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ba60cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:30:34, skipping insertion in model container [2021-06-10 12:30:34,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:30:33" (2/3) ... [2021-06-10 12:30:34,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ba60cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:30:34, skipping insertion in model container [2021-06-10 12:30:34,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:30:34" (3/3) ... [2021-06-10 12:30:34,436 INFO L111 eAbstractionObserver]: Analyzing ICFG safe032_tso.oepc.i [2021-06-10 12:30:34,441 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 12:30:34,445 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 12:30:34,446 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 12:30:34,473 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,473 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,473 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,473 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,474 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,474 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,474 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,474 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,474 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,474 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,475 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,475 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,476 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,476 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,476 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,476 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,476 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,476 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,477 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,477 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,477 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,477 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,477 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,477 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,479 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,480 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,480 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,480 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,481 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,481 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,481 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,482 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,482 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,482 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,483 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,483 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,486 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,486 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,486 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,487 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,493 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,493 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,494 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,494 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,499 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,500 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,500 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,500 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:30:34,502 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 12:30:34,519 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 12:30:34,549 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 12:30:34,549 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 12:30:34,550 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 12:30:34,550 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 12:30:34,550 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 12:30:34,550 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 12:30:34,550 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 12:30:34,550 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 12:30:34,566 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-06-10 12:30:34,619 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-06-10 12:30:34,619 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:30:34,625 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-06-10 12:30:34,625 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-06-10 12:30:34,642 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-06-10 12:30:34,663 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-06-10 12:30:34,663 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:30:34,663 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:30:34,664 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:30:34,664 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:30:34,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:30:34,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1627307057, now seen corresponding path program 1 times [2021-06-10 12:30:34,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:30:34,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672317667] [2021-06-10 12:30:34,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:30:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:30:34,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:34,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:30:34,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:34,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:30:34,969 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 12:30:34,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 12:30:34,984 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:30:34,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:30:35,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:35,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:30:35,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:35,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:30:35,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:35,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:30:35,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:30:35,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672317667] [2021-06-10 12:30:35,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:30:35,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:30:35,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326996912] [2021-06-10 12:30:35,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:30:35,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:30:35,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:30:35,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:30:35,074 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 74 [2021-06-10 12:30:35,079 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 127 flow. Second operand has 7 states, 7 states have (on average 55.42857142857143) internal successors, (388), 7 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:35,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:30:35,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 74 [2021-06-10 12:30:35,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:30:35,602 INFO L129 PetriNetUnfolder]: 639/1340 cut-off events. [2021-06-10 12:30:35,602 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:30:35,608 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2354 conditions, 1340 events. 639/1340 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 8434 event pairs, 38 based on Foata normal form. 54/1360 useless extension candidates. Maximal degree in co-relation 2323. Up to 384 conditions per place. [2021-06-10 12:30:35,615 INFO L132 encePairwiseOnDemand]: 61/74 looper letters, 20 selfloop transitions, 10 changer transitions 59/131 dead transitions. [2021-06-10 12:30:35,615 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 131 transitions, 449 flow [2021-06-10 12:30:35,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:30:35,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:30:35,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 797 transitions. [2021-06-10 12:30:35,630 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8284823284823285 [2021-06-10 12:30:35,631 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 797 transitions. [2021-06-10 12:30:35,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 797 transitions. [2021-06-10 12:30:35,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:30:35,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 797 transitions. [2021-06-10 12:30:35,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 61.30769230769231) internal successors, (797), 13 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:35,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:35,649 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:35,651 INFO L185 Difference]: Start difference. First operand has 68 places, 59 transitions, 127 flow. Second operand 13 states and 797 transitions. [2021-06-10 12:30:35,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 131 transitions, 449 flow [2021-06-10 12:30:35,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 131 transitions, 446 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 12:30:35,659 INFO L241 Difference]: Finished difference. Result has 89 places, 66 transitions, 236 flow [2021-06-10 12:30:35,661 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=236, PETRI_PLACES=89, PETRI_TRANSITIONS=66} [2021-06-10 12:30:35,662 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 21 predicate places. [2021-06-10 12:30:35,662 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 66 transitions, 236 flow [2021-06-10 12:30:35,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 55.42857142857143) internal successors, (388), 7 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:35,663 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:30:35,663 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:30:35,663 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 12:30:35,663 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:30:35,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:30:35,664 INFO L82 PathProgramCache]: Analyzing trace with hash 314299152, now seen corresponding path program 1 times [2021-06-10 12:30:35,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:30:35,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639797518] [2021-06-10 12:30:35,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:30:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:30:35,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:35,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:30:35,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:35,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:30:35,732 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 12:30:35,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 12:30:35,744 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:30:35,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:30:35,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:35,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:30:35,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:35,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:30:35,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:35,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:30:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:30:35,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639797518] [2021-06-10 12:30:35,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:30:35,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:30:35,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366059360] [2021-06-10 12:30:35,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:30:35,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:30:35,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:30:35,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:30:35,791 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 74 [2021-06-10 12:30:35,791 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 66 transitions, 236 flow. Second operand has 7 states, 7 states have (on average 55.57142857142857) internal successors, (389), 7 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:35,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:30:35,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 74 [2021-06-10 12:30:35,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:30:36,151 INFO L129 PetriNetUnfolder]: 422/1084 cut-off events. [2021-06-10 12:30:36,152 INFO L130 PetriNetUnfolder]: For 2258/2602 co-relation queries the response was YES. [2021-06-10 12:30:36,156 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3530 conditions, 1084 events. 422/1084 cut-off events. For 2258/2602 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7321 event pairs, 12 based on Foata normal form. 29/1101 useless extension candidates. Maximal degree in co-relation 3486. Up to 380 conditions per place. [2021-06-10 12:30:36,161 INFO L132 encePairwiseOnDemand]: 62/74 looper letters, 25 selfloop transitions, 15 changer transitions 58/140 dead transitions. [2021-06-10 12:30:36,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 140 transitions, 956 flow [2021-06-10 12:30:36,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:30:36,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:30:36,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 784 transitions. [2021-06-10 12:30:36,164 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.814968814968815 [2021-06-10 12:30:36,164 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 784 transitions. [2021-06-10 12:30:36,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 784 transitions. [2021-06-10 12:30:36,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:30:36,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 784 transitions. [2021-06-10 12:30:36,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 60.30769230769231) internal successors, (784), 13 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:36,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:36,170 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:36,170 INFO L185 Difference]: Start difference. First operand has 89 places, 66 transitions, 236 flow. Second operand 13 states and 784 transitions. [2021-06-10 12:30:36,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 140 transitions, 956 flow [2021-06-10 12:30:36,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 140 transitions, 924 flow, removed 16 selfloop flow, removed 3 redundant places. [2021-06-10 12:30:36,185 INFO L241 Difference]: Finished difference. Result has 101 places, 75 transitions, 402 flow [2021-06-10 12:30:36,186 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=402, PETRI_PLACES=101, PETRI_TRANSITIONS=75} [2021-06-10 12:30:36,186 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 33 predicate places. [2021-06-10 12:30:36,186 INFO L480 AbstractCegarLoop]: Abstraction has has 101 places, 75 transitions, 402 flow [2021-06-10 12:30:36,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 55.57142857142857) internal successors, (389), 7 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:36,187 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:30:36,188 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:30:36,188 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 12:30:36,188 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:30:36,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:30:36,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1916693777, now seen corresponding path program 1 times [2021-06-10 12:30:36,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:30:36,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128688556] [2021-06-10 12:30:36,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:30:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:30:36,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:36,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:30:36,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:36,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:30:36,316 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 12:30:36,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 12:30:36,330 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:30:36,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:30:36,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:36,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:30:36,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:36,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:30:36,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:36,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:30:36,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:30:36,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128688556] [2021-06-10 12:30:36,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:30:36,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:30:36,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106708413] [2021-06-10 12:30:36,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:30:36,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:30:36,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:30:36,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:30:36,380 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 74 [2021-06-10 12:30:36,381 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 75 transitions, 402 flow. Second operand has 7 states, 7 states have (on average 55.714285714285715) internal successors, (390), 7 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:36,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:30:36,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 74 [2021-06-10 12:30:36,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:30:36,664 INFO L129 PetriNetUnfolder]: 234/637 cut-off events. [2021-06-10 12:30:36,664 INFO L130 PetriNetUnfolder]: For 3564/4070 co-relation queries the response was YES. [2021-06-10 12:30:36,668 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2717 conditions, 637 events. 234/637 cut-off events. For 3564/4070 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3573 event pairs, 1 based on Foata normal form. 31/660 useless extension candidates. Maximal degree in co-relation 2660. Up to 226 conditions per place. [2021-06-10 12:30:36,671 INFO L132 encePairwiseOnDemand]: 64/74 looper letters, 31 selfloop transitions, 11 changer transitions 62/146 dead transitions. [2021-06-10 12:30:36,671 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 146 transitions, 1336 flow [2021-06-10 12:30:36,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:30:36,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:30:36,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 773 transitions. [2021-06-10 12:30:36,678 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8035343035343036 [2021-06-10 12:30:36,678 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 773 transitions. [2021-06-10 12:30:36,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 773 transitions. [2021-06-10 12:30:36,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:30:36,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 773 transitions. [2021-06-10 12:30:36,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 59.46153846153846) internal successors, (773), 13 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:36,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:36,682 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:36,682 INFO L185 Difference]: Start difference. First operand has 101 places, 75 transitions, 402 flow. Second operand 13 states and 773 transitions. [2021-06-10 12:30:36,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 146 transitions, 1336 flow [2021-06-10 12:30:36,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 146 transitions, 1180 flow, removed 78 selfloop flow, removed 10 redundant places. [2021-06-10 12:30:36,695 INFO L241 Difference]: Finished difference. Result has 106 places, 77 transitions, 460 flow [2021-06-10 12:30:36,695 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=460, PETRI_PLACES=106, PETRI_TRANSITIONS=77} [2021-06-10 12:30:36,695 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 38 predicate places. [2021-06-10 12:30:36,696 INFO L480 AbstractCegarLoop]: Abstraction has has 106 places, 77 transitions, 460 flow [2021-06-10 12:30:36,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 55.714285714285715) internal successors, (390), 7 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:36,696 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:30:36,696 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:30:36,696 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 12:30:36,696 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:30:36,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:30:36,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1690733045, now seen corresponding path program 1 times [2021-06-10 12:30:36,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:30:36,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450083674] [2021-06-10 12:30:36,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:30:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:30:36,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:36,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:30:36,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:36,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:30:36,777 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:30:36,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:30:36,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:36,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:30:36,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:36,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:30:36,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:36,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:30:36,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:30:36,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450083674] [2021-06-10 12:30:36,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:30:36,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:30:36,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550474469] [2021-06-10 12:30:36,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:30:36,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:30:36,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:30:36,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:30:36,823 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 74 [2021-06-10 12:30:36,823 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 77 transitions, 460 flow. Second operand has 6 states, 6 states have (on average 60.5) internal successors, (363), 6 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:36,823 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:30:36,823 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 74 [2021-06-10 12:30:36,823 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:30:36,995 INFO L129 PetriNetUnfolder]: 78/337 cut-off events. [2021-06-10 12:30:36,995 INFO L130 PetriNetUnfolder]: For 2261/2685 co-relation queries the response was YES. [2021-06-10 12:30:36,997 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1387 conditions, 337 events. 78/337 cut-off events. For 2261/2685 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1771 event pairs, 12 based on Foata normal form. 46/378 useless extension candidates. Maximal degree in co-relation 1329. Up to 103 conditions per place. [2021-06-10 12:30:36,999 INFO L132 encePairwiseOnDemand]: 68/74 looper letters, 17 selfloop transitions, 6 changer transitions 30/107 dead transitions. [2021-06-10 12:30:36,999 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 107 transitions, 902 flow [2021-06-10 12:30:36,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 12:30:36,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 12:30:37,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 563 transitions. [2021-06-10 12:30:37,001 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8453453453453453 [2021-06-10 12:30:37,001 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 563 transitions. [2021-06-10 12:30:37,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 563 transitions. [2021-06-10 12:30:37,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:30:37,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 563 transitions. [2021-06-10 12:30:37,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 62.55555555555556) internal successors, (563), 9 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:37,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:37,005 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:37,005 INFO L185 Difference]: Start difference. First operand has 106 places, 77 transitions, 460 flow. Second operand 9 states and 563 transitions. [2021-06-10 12:30:37,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 107 transitions, 902 flow [2021-06-10 12:30:37,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 107 transitions, 838 flow, removed 27 selfloop flow, removed 10 redundant places. [2021-06-10 12:30:37,014 INFO L241 Difference]: Finished difference. Result has 102 places, 74 transitions, 437 flow [2021-06-10 12:30:37,015 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=437, PETRI_PLACES=102, PETRI_TRANSITIONS=74} [2021-06-10 12:30:37,015 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 34 predicate places. [2021-06-10 12:30:37,015 INFO L480 AbstractCegarLoop]: Abstraction has has 102 places, 74 transitions, 437 flow [2021-06-10 12:30:37,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 60.5) internal successors, (363), 6 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:37,015 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:30:37,015 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:30:37,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 12:30:37,016 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:30:37,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:30:37,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1922976378, now seen corresponding path program 1 times [2021-06-10 12:30:37,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:30:37,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803816993] [2021-06-10 12:30:37,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:30:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:30:37,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:37,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:30:37,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:37,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:30:37,103 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:30:37,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:30:37,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:37,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:30:37,139 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:30:37,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:30:37,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:37,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:30:37,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:30:37,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803816993] [2021-06-10 12:30:37,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:30:37,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:30:37,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31179721] [2021-06-10 12:30:37,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:30:37,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:30:37,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:30:37,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:30:37,157 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-06-10 12:30:37,157 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 74 transitions, 437 flow. Second operand has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:37,157 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:30:37,157 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-06-10 12:30:37,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:30:37,354 INFO L129 PetriNetUnfolder]: 272/780 cut-off events. [2021-06-10 12:30:37,354 INFO L130 PetriNetUnfolder]: For 763/848 co-relation queries the response was YES. [2021-06-10 12:30:37,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1751 conditions, 780 events. 272/780 cut-off events. For 763/848 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5752 event pairs, 6 based on Foata normal form. 19/725 useless extension candidates. Maximal degree in co-relation 1695. Up to 205 conditions per place. [2021-06-10 12:30:37,363 INFO L132 encePairwiseOnDemand]: 64/74 looper letters, 24 selfloop transitions, 17 changer transitions 0/104 dead transitions. [2021-06-10 12:30:37,364 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 104 transitions, 579 flow [2021-06-10 12:30:37,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:30:37,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:30:37,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 643 transitions. [2021-06-10 12:30:37,366 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8689189189189189 [2021-06-10 12:30:37,366 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 643 transitions. [2021-06-10 12:30:37,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 643 transitions. [2021-06-10 12:30:37,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:30:37,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 643 transitions. [2021-06-10 12:30:37,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 64.3) internal successors, (643), 10 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:37,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:37,369 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:37,369 INFO L185 Difference]: Start difference. First operand has 102 places, 74 transitions, 437 flow. Second operand 10 states and 643 transitions. [2021-06-10 12:30:37,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 104 transitions, 579 flow [2021-06-10 12:30:37,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 104 transitions, 552 flow, removed 9 selfloop flow, removed 11 redundant places. [2021-06-10 12:30:37,374 INFO L241 Difference]: Finished difference. Result has 100 places, 89 transitions, 530 flow [2021-06-10 12:30:37,375 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=530, PETRI_PLACES=100, PETRI_TRANSITIONS=89} [2021-06-10 12:30:37,375 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 32 predicate places. [2021-06-10 12:30:37,375 INFO L480 AbstractCegarLoop]: Abstraction has has 100 places, 89 transitions, 530 flow [2021-06-10 12:30:37,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:37,375 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:30:37,375 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:30:37,375 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 12:30:37,376 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:30:37,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:30:37,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1326802923, now seen corresponding path program 1 times [2021-06-10 12:30:37,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:30:37,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64268339] [2021-06-10 12:30:37,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:30:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:30:37,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:37,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:30:37,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:37,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:30:37,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:37,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:30:37,415 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:30:37,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:30:37,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:37,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:30:37,439 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:30:37,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:30:37,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:37,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:30:37,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:30:37,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64268339] [2021-06-10 12:30:37,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:30:37,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:30:37,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121623625] [2021-06-10 12:30:37,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:30:37,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:30:37,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:30:37,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:30:37,451 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-06-10 12:30:37,452 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 89 transitions, 530 flow. Second operand has 7 states, 7 states have (on average 61.142857142857146) internal successors, (428), 7 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:37,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:30:37,452 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-06-10 12:30:37,452 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:30:37,703 INFO L129 PetriNetUnfolder]: 252/821 cut-off events. [2021-06-10 12:30:37,703 INFO L130 PetriNetUnfolder]: For 1791/2268 co-relation queries the response was YES. [2021-06-10 12:30:37,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2668 conditions, 821 events. 252/821 cut-off events. For 1791/2268 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6480 event pairs, 0 based on Foata normal form. 126/894 useless extension candidates. Maximal degree in co-relation 2614. Up to 242 conditions per place. [2021-06-10 12:30:37,713 INFO L132 encePairwiseOnDemand]: 64/74 looper letters, 16 selfloop transitions, 32 changer transitions 13/124 dead transitions. [2021-06-10 12:30:37,713 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 124 transitions, 876 flow [2021-06-10 12:30:37,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:30:37,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:30:37,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 837 transitions. [2021-06-10 12:30:37,715 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8700623700623701 [2021-06-10 12:30:37,715 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 837 transitions. [2021-06-10 12:30:37,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 837 transitions. [2021-06-10 12:30:37,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:30:37,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 837 transitions. [2021-06-10 12:30:37,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 64.38461538461539) internal successors, (837), 13 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:37,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:37,719 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:37,720 INFO L185 Difference]: Start difference. First operand has 100 places, 89 transitions, 530 flow. Second operand 13 states and 837 transitions. [2021-06-10 12:30:37,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 124 transitions, 876 flow [2021-06-10 12:30:37,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 124 transitions, 868 flow, removed 3 selfloop flow, removed 1 redundant places. [2021-06-10 12:30:37,726 INFO L241 Difference]: Finished difference. Result has 115 places, 105 transitions, 725 flow [2021-06-10 12:30:37,727 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=725, PETRI_PLACES=115, PETRI_TRANSITIONS=105} [2021-06-10 12:30:37,727 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 47 predicate places. [2021-06-10 12:30:37,727 INFO L480 AbstractCegarLoop]: Abstraction has has 115 places, 105 transitions, 725 flow [2021-06-10 12:30:37,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 61.142857142857146) internal successors, (428), 7 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:37,727 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:30:37,728 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:30:37,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 12:30:37,728 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:30:37,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:30:37,728 INFO L82 PathProgramCache]: Analyzing trace with hash 394838920, now seen corresponding path program 1 times [2021-06-10 12:30:37,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:30:37,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497016531] [2021-06-10 12:30:37,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:30:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:30:37,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:37,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:30:37,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:37,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:30:37,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:37,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:30:37,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:37,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:30:37,772 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:30:37,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:30:37,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:37,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:30:37,796 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:30:37,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:30:37,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:30:37,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:30:37,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:30:37,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497016531] [2021-06-10 12:30:37,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:30:37,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:30:37,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814715530] [2021-06-10 12:30:37,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:30:37,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:30:37,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:30:37,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:30:37,807 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-06-10 12:30:37,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 105 transitions, 725 flow. Second operand has 8 states, 8 states have (on average 61.125) internal successors, (489), 8 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:37,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:30:37,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-06-10 12:30:37,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:30:38,103 INFO L129 PetriNetUnfolder]: 210/739 cut-off events. [2021-06-10 12:30:38,103 INFO L130 PetriNetUnfolder]: For 2981/3717 co-relation queries the response was YES. [2021-06-10 12:30:38,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2814 conditions, 739 events. 210/739 cut-off events. For 2981/3717 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5940 event pairs, 0 based on Foata normal form. 106/792 useless extension candidates. Maximal degree in co-relation 2754. Up to 190 conditions per place. [2021-06-10 12:30:38,111 INFO L132 encePairwiseOnDemand]: 66/74 looper letters, 0 selfloop transitions, 0 changer transitions 111/111 dead transitions. [2021-06-10 12:30:38,111 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 111 transitions, 884 flow [2021-06-10 12:30:38,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-10 12:30:38,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-06-10 12:30:38,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 947 transitions. [2021-06-10 12:30:38,113 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8531531531531531 [2021-06-10 12:30:38,113 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 947 transitions. [2021-06-10 12:30:38,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 947 transitions. [2021-06-10 12:30:38,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:30:38,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 947 transitions. [2021-06-10 12:30:38,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 63.13333333333333) internal successors, (947), 15 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:38,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 74.0) internal successors, (1184), 16 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:38,118 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 74.0) internal successors, (1184), 16 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:38,118 INFO L185 Difference]: Start difference. First operand has 115 places, 105 transitions, 725 flow. Second operand 15 states and 947 transitions. [2021-06-10 12:30:38,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 111 transitions, 884 flow [2021-06-10 12:30:38,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 111 transitions, 698 flow, removed 64 selfloop flow, removed 15 redundant places. [2021-06-10 12:30:38,129 INFO L241 Difference]: Finished difference. Result has 107 places, 0 transitions, 0 flow [2021-06-10 12:30:38,130 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=107, PETRI_TRANSITIONS=0} [2021-06-10 12:30:38,130 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 39 predicate places. [2021-06-10 12:30:38,130 INFO L480 AbstractCegarLoop]: Abstraction has has 107 places, 0 transitions, 0 flow [2021-06-10 12:30:38,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 61.125) internal successors, (489), 8 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:30:38,130 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 12:30:38,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 12:30:38 BasicIcfg [2021-06-10 12:30:38,135 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 12:30:38,136 INFO L168 Benchmark]: Toolchain (without parser) took 4773.59 ms. Allocated memory was 333.4 MB in the beginning and 400.6 MB in the end (delta: 67.1 MB). Free memory was 296.0 MB in the beginning and 340.5 MB in the end (delta: -44.5 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.0 GB. [2021-06-10 12:30:38,136 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 333.4 MB. Free memory was 313.9 MB in the beginning and 313.8 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:30:38,136 INFO L168 Benchmark]: CACSL2BoogieTranslator took 526.10 ms. Allocated memory is still 333.4 MB. Free memory was 295.8 MB in the beginning and 295.1 MB in the end (delta: 651.0 kB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. [2021-06-10 12:30:38,137 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.51 ms. Allocated memory is still 333.4 MB. Free memory was 295.1 MB in the beginning and 293.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:30:38,137 INFO L168 Benchmark]: Boogie Preprocessor took 39.00 ms. Allocated memory is still 333.4 MB. Free memory was 293.0 MB in the beginning and 291.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:30:38,137 INFO L168 Benchmark]: RCFGBuilder took 437.81 ms. Allocated memory is still 333.4 MB. Free memory was 291.6 MB in the beginning and 267.8 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:30:38,138 INFO L168 Benchmark]: TraceAbstraction took 3704.49 ms. Allocated memory was 333.4 MB in the beginning and 400.6 MB in the end (delta: 67.1 MB). Free memory was 267.8 MB in the beginning and 340.5 MB in the end (delta: -72.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:30:38,139 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 333.4 MB. Free memory was 313.9 MB in the beginning and 313.8 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 526.10 ms. Allocated memory is still 333.4 MB. Free memory was 295.8 MB in the beginning and 295.1 MB in the end (delta: 651.0 kB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 58.51 ms. Allocated memory is still 333.4 MB. Free memory was 295.1 MB in the beginning and 293.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 39.00 ms. Allocated memory is still 333.4 MB. Free memory was 293.0 MB in the beginning and 291.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 437.81 ms. Allocated memory is still 333.4 MB. Free memory was 291.6 MB in the beginning and 267.8 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3704.49 ms. Allocated memory was 333.4 MB in the beginning and 400.6 MB in the end (delta: 67.1 MB). Free memory was 267.8 MB in the beginning and 340.5 MB in the end (delta: -72.6 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 20.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3586.4ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2323.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 92.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 112 SDtfs, 318 SDslu, 333 SDs, 0 SdLazy, 373 SolverSat, 109 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 327.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1126.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=725occurred in iteration=6, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 26.8ms SsaConstructionTime, 181.3ms SatisfiabilityAnalysisTime, 756.0ms InterpolantComputationTime, 309 NumberOfCodeBlocks, 309 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 302 ConstructedInterpolants, 0 QuantifiedInterpolants, 1230 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...