/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:02:47,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:02:47,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:02:47,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:02:47,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:02:47,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:02:47,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:02:47,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:02:47,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:02:47,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:02:47,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:02:47,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:02:47,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:02:47,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:02:47,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:02:47,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:02:47,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:02:47,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:02:47,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:02:47,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:02:47,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:02:47,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:02:47,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:02:47,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:02:47,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 05:02:47,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 05:02:47,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 05:02:47,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 05:02:47,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 05:02:47,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 05:02:47,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 05:02:47,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 05:02:47,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 05:02:47,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:02:47,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:02:47,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:02:47,105 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-RepeatedVariableLbe.epf [2021-03-25 05:02:47,138 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:02:47,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:02:47,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:02:47,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:02:47,142 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:02:47,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:02:47,142 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:02:47,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:02:47,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:02:47,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:02:47,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:02:47,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:02:47,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:02:47,143 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:02:47,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:02:47,144 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:02:47,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:02:47,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:02:47,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:02:47,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:02:47,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:02:47,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:02:47,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:02:47,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:02:47,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:02:47,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:02:47,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:02:47,145 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:02:47,146 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:02:47,146 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:02:47,146 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:02:47,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:02:47,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:02:47,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:02:47,477 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:02:47,478 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:02:47,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i [2021-03-25 05:02:47,532 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ee8fcb1d/4dc5c710b5164982b93ceb60bd4b65fd/FLAG488cf834d [2021-03-25 05:02:48,062 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:02:48,063 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i [2021-03-25 05:02:48,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ee8fcb1d/4dc5c710b5164982b93ceb60bd4b65fd/FLAG488cf834d [2021-03-25 05:02:48,366 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ee8fcb1d/4dc5c710b5164982b93ceb60bd4b65fd [2021-03-25 05:02:48,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:02:48,369 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:02:48,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:02:48,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:02:48,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:02:48,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:02:48" (1/1) ... [2021-03-25 05:02:48,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1430939a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:48, skipping insertion in model container [2021-03-25 05:02:48,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:02:48" (1/1) ... [2021-03-25 05:02:48,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:02:48,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:02:48,543 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/safe014_tso.opt.i[949,962] [2021-03-25 05:02:48,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:02:48,717 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:02:48,728 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/safe014_tso.opt.i[949,962] [2021-03-25 05:02:48,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:02:48,829 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:02:48,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:48 WrapperNode [2021-03-25 05:02:48,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:02:48,832 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:02:48,832 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:02:48,832 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:02:48,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:48" (1/1) ... [2021-03-25 05:02:48,852 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:48" (1/1) ... [2021-03-25 05:02:48,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:02:48,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:02:48,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:02:48,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:02:48,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:48" (1/1) ... [2021-03-25 05:02:48,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:48" (1/1) ... [2021-03-25 05:02:48,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:48" (1/1) ... [2021-03-25 05:02:48,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:48" (1/1) ... [2021-03-25 05:02:48,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:48" (1/1) ... [2021-03-25 05:02:48,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:48" (1/1) ... [2021-03-25 05:02:48,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:48" (1/1) ... [2021-03-25 05:02:48,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:02:48,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:02:48,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:02:48,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:02:48,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:48" (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 [2021-03-25 05:02:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:02:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:02:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:02:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:02:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 05:02:48,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 05:02:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 05:02:48,950 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 05:02:48,950 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 05:02:48,950 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 05:02:48,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:02:48,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:02:48,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:02:48,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:02:48,951 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 05:02:49,277 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:02:49,278 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 05:02:49,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:02:49 BoogieIcfgContainer [2021-03-25 05:02:49,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:02:49,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:02:49,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:02:49,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:02:49,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:02:48" (1/3) ... [2021-03-25 05:02:49,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ca40d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:02:49, skipping insertion in model container [2021-03-25 05:02:49,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:48" (2/3) ... [2021-03-25 05:02:49,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ca40d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:02:49, skipping insertion in model container [2021-03-25 05:02:49,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:02:49" (3/3) ... [2021-03-25 05:02:49,285 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_tso.opt.i [2021-03-25 05:02:49,290 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:02:49,293 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 05:02:49,294 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:02:49,318 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,318 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,319 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,319 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,319 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,319 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,319 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,319 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,320 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,320 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,320 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,320 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,321 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,321 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,321 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,321 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,321 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,321 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,322 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,322 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,322 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,322 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,323 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,323 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,325 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,325 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,325 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,325 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,325 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,326 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,326 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,326 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,326 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,327 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,327 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,327 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,329 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,329 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,329 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,330 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,334 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,335 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,335 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,335 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,340 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,340 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,340 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,341 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:49,344 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:02:49,360 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 05:02:49,388 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:02:49,388 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:02:49,388 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:02:49,388 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:02:49,388 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:02:49,388 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:02:49,388 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:02:49,389 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:02:49,399 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-25 05:02:49,459 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-25 05:02:49,460 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:02:49,465 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-25 05:02:49,465 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-25 05:02:49,496 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-25 05:02:49,498 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:49,505 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-25 05:02:49,508 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-25 05:02:49,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-25 05:02:49,532 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-25 05:02:49,533 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:02:49,533 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-25 05:02:49,536 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-25 05:02:50,809 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-03-25 05:02:50,999 INFO L154 LiptonReduction]: Checked pairs total: 1328 [2021-03-25 05:02:51,000 INFO L156 LiptonReduction]: Total number of compositions: 41 [2021-03-25 05:02:51,001 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1504 [2021-03-25 05:02:51,009 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-25 05:02:51,009 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:02:51,010 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:51,010 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:51,010 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:51,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:51,015 INFO L82 PathProgramCache]: Analyzing trace with hash -864788976, now seen corresponding path program 1 times [2021-03-25 05:02:51,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:51,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43864953] [2021-03-25 05:02:51,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:51,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:51,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:51,240 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:02:51,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:02:51,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:51,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:51,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:51,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43864953] [2021-03-25 05:02:51,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:51,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:02:51,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202265145] [2021-03-25 05:02:51,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:02:51,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:51,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:02:51,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:02:51,285 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-25 05:02:51,287 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 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) [2021-03-25 05:02:51,287 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:51,287 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-25 05:02:51,288 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:51,364 INFO L129 PetriNetUnfolder]: 97/246 cut-off events. [2021-03-25 05:02:51,364 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:02:51,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 246 events. 97/246 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1303 event pairs, 27 based on Foata normal form. 24/260 useless extension candidates. Maximal degree in co-relation 425. Up to 72 conditions per place. [2021-03-25 05:02:51,367 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 11 selfloop transitions, 6 changer transitions 14/43 dead transitions. [2021-03-25 05:02:51,367 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 43 transitions, 157 flow [2021-03-25 05:02:51,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:02:51,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:02:51,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 615 transitions. [2021-03-25 05:02:51,380 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7573891625615764 [2021-03-25 05:02:51,380 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 615 transitions. [2021-03-25 05:02:51,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 615 transitions. [2021-03-25 05:02:51,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:51,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 615 transitions. [2021-03-25 05:02:51,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.85714285714286) internal successors, (615), 7 states have internal predecessors, (615), 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) [2021-03-25 05:02:51,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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) [2021-03-25 05:02:51,395 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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) [2021-03-25 05:02:51,396 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 7 states and 615 transitions. [2021-03-25 05:02:51,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 43 transitions, 157 flow [2021-03-25 05:02:51,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 43 transitions, 154 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 05:02:51,400 INFO L241 Difference]: Finished difference. Result has 40 places, 25 transitions, 106 flow [2021-03-25 05:02:51,402 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=106, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2021-03-25 05:02:51,403 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2021-03-25 05:02:51,403 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:51,403 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 25 transitions, 106 flow [2021-03-25 05:02:51,403 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 25 transitions, 106 flow [2021-03-25 05:02:51,404 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 25 transitions, 106 flow [2021-03-25 05:02:51,419 INFO L129 PetriNetUnfolder]: 51/155 cut-off events. [2021-03-25 05:02:51,419 INFO L130 PetriNetUnfolder]: For 97/109 co-relation queries the response was YES. [2021-03-25 05:02:51,420 INFO L84 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 155 events. 51/155 cut-off events. For 97/109 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 785 event pairs, 16 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 364. Up to 55 conditions per place. [2021-03-25 05:02:51,422 INFO L142 LiptonReduction]: Number of co-enabled transitions 162 [2021-03-25 05:02:51,822 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-25 05:02:52,048 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-25 05:02:52,111 INFO L154 LiptonReduction]: Checked pairs total: 72 [2021-03-25 05:02:52,112 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 05:02:52,112 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 709 [2021-03-25 05:02:52,112 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 100 flow [2021-03-25 05:02:52,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 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) [2021-03-25 05:02:52,113 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:52,113 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:52,113 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:02:52,113 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:52,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:52,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1038676965, now seen corresponding path program 1 times [2021-03-25 05:02:52,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:52,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869832315] [2021-03-25 05:02:52,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:52,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:52,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:02:52,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:52,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:52,167 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:02:52,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:02:52,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:52,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:52,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:52,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869832315] [2021-03-25 05:02:52,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:52,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:02:52,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650561211] [2021-03-25 05:02:52,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:02:52,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:52,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:02:52,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:02:52,182 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 119 [2021-03-25 05:02:52,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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) [2021-03-25 05:02:52,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:52,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 119 [2021-03-25 05:02:52,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:52,295 INFO L129 PetriNetUnfolder]: 146/347 cut-off events. [2021-03-25 05:02:52,296 INFO L130 PetriNetUnfolder]: For 635/727 co-relation queries the response was YES. [2021-03-25 05:02:52,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1103 conditions, 347 events. 146/347 cut-off events. For 635/727 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1882 event pairs, 5 based on Foata normal form. 36/377 useless extension candidates. Maximal degree in co-relation 1088. Up to 98 conditions per place. [2021-03-25 05:02:52,299 INFO L132 encePairwiseOnDemand]: 110/119 looper letters, 19 selfloop transitions, 17 changer transitions 25/70 dead transitions. [2021-03-25 05:02:52,300 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 70 transitions, 504 flow [2021-03-25 05:02:52,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 05:02:52,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 05:02:52,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 787 transitions. [2021-03-25 05:02:52,302 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.734827264239029 [2021-03-25 05:02:52,302 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 787 transitions. [2021-03-25 05:02:52,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 787 transitions. [2021-03-25 05:02:52,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:52,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 787 transitions. [2021-03-25 05:02:52,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 87.44444444444444) internal successors, (787), 9 states have internal predecessors, (787), 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) [2021-03-25 05:02:52,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 119.0) internal successors, (1190), 10 states have internal predecessors, (1190), 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) [2021-03-25 05:02:52,308 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 119.0) internal successors, (1190), 10 states have internal predecessors, (1190), 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) [2021-03-25 05:02:52,309 INFO L185 Difference]: Start difference. First operand has 34 places, 22 transitions, 100 flow. Second operand 9 states and 787 transitions. [2021-03-25 05:02:52,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 70 transitions, 504 flow [2021-03-25 05:02:52,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 70 transitions, 491 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-03-25 05:02:52,312 INFO L241 Difference]: Finished difference. Result has 48 places, 35 transitions, 284 flow [2021-03-25 05:02:52,313 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=284, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2021-03-25 05:02:52,313 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2021-03-25 05:02:52,313 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:52,313 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 35 transitions, 284 flow [2021-03-25 05:02:52,314 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 35 transitions, 284 flow [2021-03-25 05:02:52,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 35 transitions, 284 flow [2021-03-25 05:02:52,330 INFO L129 PetriNetUnfolder]: 64/182 cut-off events. [2021-03-25 05:02:52,330 INFO L130 PetriNetUnfolder]: For 653/730 co-relation queries the response was YES. [2021-03-25 05:02:52,331 INFO L84 FinitePrefix]: Finished finitePrefix Result has 785 conditions, 182 events. 64/182 cut-off events. For 653/730 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 913 event pairs, 10 based on Foata normal form. 16/193 useless extension candidates. Maximal degree in co-relation 764. Up to 63 conditions per place. [2021-03-25 05:02:52,333 INFO L142 LiptonReduction]: Number of co-enabled transitions 220 [2021-03-25 05:02:52,338 INFO L154 LiptonReduction]: Checked pairs total: 89 [2021-03-25 05:02:52,339 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:02:52,339 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 26 [2021-03-25 05:02:52,339 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 284 flow [2021-03-25 05:02:52,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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) [2021-03-25 05:02:52,340 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:52,340 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:52,340 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:02:52,340 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:52,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:52,341 INFO L82 PathProgramCache]: Analyzing trace with hash 575273687, now seen corresponding path program 1 times [2021-03-25 05:02:52,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:52,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033288229] [2021-03-25 05:02:52,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:52,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:52,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:52,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:52,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:52,393 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:02:52,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:02:52,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:52,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:52,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033288229] [2021-03-25 05:02:52,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:52,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:02:52,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304038920] [2021-03-25 05:02:52,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:02:52,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:52,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:02:52,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:02:52,413 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 119 [2021-03-25 05:02:52,414 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 284 flow. Second operand has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 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) [2021-03-25 05:02:52,414 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:52,414 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 119 [2021-03-25 05:02:52,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:52,481 INFO L129 PetriNetUnfolder]: 87/234 cut-off events. [2021-03-25 05:02:52,481 INFO L130 PetriNetUnfolder]: For 1440/1557 co-relation queries the response was YES. [2021-03-25 05:02:52,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1150 conditions, 234 events. 87/234 cut-off events. For 1440/1557 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1169 event pairs, 3 based on Foata normal form. 23/253 useless extension candidates. Maximal degree in co-relation 1127. Up to 69 conditions per place. [2021-03-25 05:02:52,484 INFO L132 encePairwiseOnDemand]: 111/119 looper letters, 15 selfloop transitions, 8 changer transitions 34/66 dead transitions. [2021-03-25 05:02:52,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 66 transitions, 711 flow [2021-03-25 05:02:52,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:02:52,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:02:52,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 606 transitions. [2021-03-25 05:02:52,486 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7274909963985594 [2021-03-25 05:02:52,486 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 606 transitions. [2021-03-25 05:02:52,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 606 transitions. [2021-03-25 05:02:52,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:52,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 606 transitions. [2021-03-25 05:02:52,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 states have internal predecessors, (606), 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) [2021-03-25 05:02:52,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 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) [2021-03-25 05:02:52,491 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 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) [2021-03-25 05:02:52,491 INFO L185 Difference]: Start difference. First operand has 44 places, 35 transitions, 284 flow. Second operand 7 states and 606 transitions. [2021-03-25 05:02:52,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 66 transitions, 711 flow [2021-03-25 05:02:52,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 66 transitions, 657 flow, removed 27 selfloop flow, removed 3 redundant places. [2021-03-25 05:02:52,499 INFO L241 Difference]: Finished difference. Result has 51 places, 28 transitions, 218 flow [2021-03-25 05:02:52,500 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=218, PETRI_PLACES=51, PETRI_TRANSITIONS=28} [2021-03-25 05:02:52,500 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2021-03-25 05:02:52,500 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:52,500 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 28 transitions, 218 flow [2021-03-25 05:02:52,501 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 28 transitions, 218 flow [2021-03-25 05:02:52,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 28 transitions, 218 flow [2021-03-25 05:02:52,510 INFO L129 PetriNetUnfolder]: 17/66 cut-off events. [2021-03-25 05:02:52,510 INFO L130 PetriNetUnfolder]: For 187/193 co-relation queries the response was YES. [2021-03-25 05:02:52,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 66 events. 17/66 cut-off events. For 187/193 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 208 event pairs, 5 based on Foata normal form. 3/66 useless extension candidates. Maximal degree in co-relation 278. Up to 19 conditions per place. [2021-03-25 05:02:52,511 INFO L142 LiptonReduction]: Number of co-enabled transitions 108 [2021-03-25 05:02:52,513 INFO L154 LiptonReduction]: Checked pairs total: 62 [2021-03-25 05:02:52,513 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:02:52,513 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-03-25 05:02:52,514 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 28 transitions, 218 flow [2021-03-25 05:02:52,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 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) [2021-03-25 05:02:52,514 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:52,514 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:52,514 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:02:52,515 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:52,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:52,515 INFO L82 PathProgramCache]: Analyzing trace with hash 712987233, now seen corresponding path program 1 times [2021-03-25 05:02:52,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:52,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958958872] [2021-03-25 05:02:52,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:52,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:52,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:52,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:52,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:52,576 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:02:52,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:02:52,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:52,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:52,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:52,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958958872] [2021-03-25 05:02:52,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:52,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:02:52,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615582936] [2021-03-25 05:02:52,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:02:52,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:52,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:02:52,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:02:52,596 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 119 [2021-03-25 05:02:52,596 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 28 transitions, 218 flow. Second operand has 6 states, 6 states have (on average 84.83333333333333) internal successors, (509), 6 states have internal predecessors, (509), 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) [2021-03-25 05:02:52,596 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:52,596 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 119 [2021-03-25 05:02:52,597 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:52,654 INFO L129 PetriNetUnfolder]: 19/88 cut-off events. [2021-03-25 05:02:52,654 INFO L130 PetriNetUnfolder]: For 349/357 co-relation queries the response was YES. [2021-03-25 05:02:52,654 INFO L84 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 88 events. 19/88 cut-off events. For 349/357 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 337 event pairs, 2 based on Foata normal form. 9/97 useless extension candidates. Maximal degree in co-relation 430. Up to 27 conditions per place. [2021-03-25 05:02:52,655 INFO L132 encePairwiseOnDemand]: 112/119 looper letters, 6 selfloop transitions, 6 changer transitions 23/45 dead transitions. [2021-03-25 05:02:52,655 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 476 flow [2021-03-25 05:02:52,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:02:52,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:02:52,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 612 transitions. [2021-03-25 05:02:52,658 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7346938775510204 [2021-03-25 05:02:52,658 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 612 transitions. [2021-03-25 05:02:52,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 612 transitions. [2021-03-25 05:02:52,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:52,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 612 transitions. [2021-03-25 05:02:52,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.42857142857143) internal successors, (612), 7 states have internal predecessors, (612), 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) [2021-03-25 05:02:52,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 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) [2021-03-25 05:02:52,662 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 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) [2021-03-25 05:02:52,662 INFO L185 Difference]: Start difference. First operand has 48 places, 28 transitions, 218 flow. Second operand 7 states and 612 transitions. [2021-03-25 05:02:52,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 476 flow [2021-03-25 05:02:52,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 392 flow, removed 21 selfloop flow, removed 8 redundant places. [2021-03-25 05:02:52,665 INFO L241 Difference]: Finished difference. Result has 50 places, 21 transitions, 143 flow [2021-03-25 05:02:52,665 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=143, PETRI_PLACES=50, PETRI_TRANSITIONS=21} [2021-03-25 05:02:52,666 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2021-03-25 05:02:52,666 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:52,666 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 21 transitions, 143 flow [2021-03-25 05:02:52,666 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 21 transitions, 143 flow [2021-03-25 05:02:52,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 21 transitions, 143 flow [2021-03-25 05:02:52,670 INFO L129 PetriNetUnfolder]: 5/39 cut-off events. [2021-03-25 05:02:52,670 INFO L130 PetriNetUnfolder]: For 100/101 co-relation queries the response was YES. [2021-03-25 05:02:52,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 39 events. 5/39 cut-off events. For 100/101 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 92 event pairs, 1 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 140. Up to 12 conditions per place. [2021-03-25 05:02:52,671 INFO L142 LiptonReduction]: Number of co-enabled transitions 78 [2021-03-25 05:02:52,707 INFO L154 LiptonReduction]: Checked pairs total: 67 [2021-03-25 05:02:52,707 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:02:52,707 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 41 [2021-03-25 05:02:52,709 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 21 transitions, 156 flow [2021-03-25 05:02:52,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 84.83333333333333) internal successors, (509), 6 states have internal predecessors, (509), 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) [2021-03-25 05:02:52,710 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:52,710 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:52,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:02:52,710 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:52,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:52,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1748794311, now seen corresponding path program 1 times [2021-03-25 05:02:52,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:52,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468064496] [2021-03-25 05:02:52,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:52,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:52,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:02:52,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:52,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:52,784 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:02:52,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:02:52,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:52,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:52,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:52,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468064496] [2021-03-25 05:02:52,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:52,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:02:52,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666564379] [2021-03-25 05:02:52,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:02:52,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:52,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:02:52,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:02:52,796 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 121 [2021-03-25 05:02:52,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 21 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 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) [2021-03-25 05:02:52,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:52,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 121 [2021-03-25 05:02:52,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:52,833 INFO L129 PetriNetUnfolder]: 3/45 cut-off events. [2021-03-25 05:02:52,834 INFO L130 PetriNetUnfolder]: For 213/226 co-relation queries the response was YES. [2021-03-25 05:02:52,834 INFO L84 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 45 events. 3/45 cut-off events. For 213/226 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 112 event pairs, 0 based on Foata normal form. 9/54 useless extension candidates. Maximal degree in co-relation 187. Up to 12 conditions per place. [2021-03-25 05:02:52,834 INFO L132 encePairwiseOnDemand]: 114/121 looper letters, 8 selfloop transitions, 6 changer transitions 5/29 dead transitions. [2021-03-25 05:02:52,834 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 29 transitions, 283 flow [2021-03-25 05:02:52,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:02:52,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:02:52,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 608 transitions. [2021-03-25 05:02:52,836 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.717827626918536 [2021-03-25 05:02:52,836 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 608 transitions. [2021-03-25 05:02:52,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 608 transitions. [2021-03-25 05:02:52,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:52,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 608 transitions. [2021-03-25 05:02:52,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.85714285714286) internal successors, (608), 7 states have internal predecessors, (608), 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) [2021-03-25 05:02:52,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 121.0) internal successors, (968), 8 states have internal predecessors, (968), 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) [2021-03-25 05:02:52,839 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 121.0) internal successors, (968), 8 states have internal predecessors, (968), 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) [2021-03-25 05:02:52,840 INFO L185 Difference]: Start difference. First operand has 48 places, 21 transitions, 156 flow. Second operand 7 states and 608 transitions. [2021-03-25 05:02:52,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 29 transitions, 283 flow [2021-03-25 05:02:52,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 29 transitions, 180 flow, removed 18 selfloop flow, removed 13 redundant places. [2021-03-25 05:02:52,841 INFO L241 Difference]: Finished difference. Result has 46 places, 22 transitions, 132 flow [2021-03-25 05:02:52,842 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=132, PETRI_PLACES=46, PETRI_TRANSITIONS=22} [2021-03-25 05:02:52,842 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2021-03-25 05:02:52,842 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:52,842 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 22 transitions, 132 flow [2021-03-25 05:02:52,842 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 22 transitions, 132 flow [2021-03-25 05:02:52,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 22 transitions, 132 flow [2021-03-25 05:02:52,846 INFO L129 PetriNetUnfolder]: 2/33 cut-off events. [2021-03-25 05:02:52,846 INFO L130 PetriNetUnfolder]: For 60/62 co-relation queries the response was YES. [2021-03-25 05:02:52,846 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 33 events. 2/33 cut-off events. For 60/62 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 95. Up to 9 conditions per place. [2021-03-25 05:02:52,846 INFO L142 LiptonReduction]: Number of co-enabled transitions 80 [2021-03-25 05:02:52,951 INFO L154 LiptonReduction]: Checked pairs total: 128 [2021-03-25 05:02:52,951 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 05:02:52,951 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 109 [2021-03-25 05:02:52,952 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 20 transitions, 127 flow [2021-03-25 05:02:52,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 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) [2021-03-25 05:02:52,952 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:52,952 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:52,953 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 05:02:52,953 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:52,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:52,953 INFO L82 PathProgramCache]: Analyzing trace with hash -281562412, now seen corresponding path program 1 times [2021-03-25 05:02:52,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:52,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439419292] [2021-03-25 05:02:52,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:53,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:53,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:53,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:53,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:53,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:53,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:02:53,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:53,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439419292] [2021-03-25 05:02:53,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:53,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:02:53,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065275612] [2021-03-25 05:02:53,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:02:53,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:53,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:02:53,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:02:53,025 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 124 [2021-03-25 05:02:53,025 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 20 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 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) [2021-03-25 05:02:53,025 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:53,025 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 124 [2021-03-25 05:02:53,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:53,063 INFO L129 PetriNetUnfolder]: 53/127 cut-off events. [2021-03-25 05:02:53,063 INFO L130 PetriNetUnfolder]: For 1112/1138 co-relation queries the response was YES. [2021-03-25 05:02:53,064 INFO L84 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 127 events. 53/127 cut-off events. For 1112/1138 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 530 event pairs, 21 based on Foata normal form. 14/134 useless extension candidates. Maximal degree in co-relation 372. Up to 83 conditions per place. [2021-03-25 05:02:53,064 INFO L132 encePairwiseOnDemand]: 118/124 looper letters, 5 selfloop transitions, 6 changer transitions 5/30 dead transitions. [2021-03-25 05:02:53,064 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 30 transitions, 179 flow [2021-03-25 05:02:53,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:02:53,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:02:53,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 473 transitions. [2021-03-25 05:02:53,066 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7629032258064516 [2021-03-25 05:02:53,067 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 473 transitions. [2021-03-25 05:02:53,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 473 transitions. [2021-03-25 05:02:53,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:53,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 473 transitions. [2021-03-25 05:02:53,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.6) internal successors, (473), 5 states have internal predecessors, (473), 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) [2021-03-25 05:02:53,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-03-25 05:02:53,070 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-03-25 05:02:53,070 INFO L185 Difference]: Start difference. First operand has 41 places, 20 transitions, 127 flow. Second operand 5 states and 473 transitions. [2021-03-25 05:02:53,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 30 transitions, 179 flow [2021-03-25 05:02:53,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 30 transitions, 149 flow, removed 9 selfloop flow, removed 8 redundant places. [2021-03-25 05:02:53,072 INFO L241 Difference]: Finished difference. Result has 40 places, 25 transitions, 143 flow [2021-03-25 05:02:53,072 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=143, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2021-03-25 05:02:53,073 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2021-03-25 05:02:53,073 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:53,073 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 25 transitions, 143 flow [2021-03-25 05:02:53,073 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 25 transitions, 143 flow [2021-03-25 05:02:53,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 25 transitions, 143 flow [2021-03-25 05:02:53,086 INFO L129 PetriNetUnfolder]: 24/89 cut-off events. [2021-03-25 05:02:53,087 INFO L130 PetriNetUnfolder]: For 230/248 co-relation queries the response was YES. [2021-03-25 05:02:53,087 INFO L84 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 89 events. 24/89 cut-off events. For 230/248 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 399 event pairs, 13 based on Foata normal form. 2/85 useless extension candidates. Maximal degree in co-relation 291. Up to 55 conditions per place. [2021-03-25 05:02:53,088 INFO L142 LiptonReduction]: Number of co-enabled transitions 90 [2021-03-25 05:02:53,089 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:02:53,089 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:02:53,090 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17 [2021-03-25 05:02:53,091 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 25 transitions, 143 flow [2021-03-25 05:02:53,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 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) [2021-03-25 05:02:53,092 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:53,092 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:53,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 05:02:53,092 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:53,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:53,093 INFO L82 PathProgramCache]: Analyzing trace with hash -152796399, now seen corresponding path program 1 times [2021-03-25 05:02:53,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:53,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646638612] [2021-03-25 05:02:53,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:53,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:53,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:53,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:53,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:53,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:53,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:53,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:53,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646638612] [2021-03-25 05:02:53,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:53,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:02:53,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028986341] [2021-03-25 05:02:53,147 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:02:53,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:53,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:02:53,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:02:53,150 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 124 [2021-03-25 05:02:53,151 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 25 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 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) [2021-03-25 05:02:53,151 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:53,151 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 124 [2021-03-25 05:02:53,151 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:53,193 INFO L129 PetriNetUnfolder]: 33/100 cut-off events. [2021-03-25 05:02:53,194 INFO L130 PetriNetUnfolder]: For 402/516 co-relation queries the response was YES. [2021-03-25 05:02:53,194 INFO L84 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 100 events. 33/100 cut-off events. For 402/516 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 423 event pairs, 3 based on Foata normal form. 40/135 useless extension candidates. Maximal degree in co-relation 369. Up to 61 conditions per place. [2021-03-25 05:02:53,195 INFO L132 encePairwiseOnDemand]: 118/124 looper letters, 5 selfloop transitions, 10 changer transitions 6/35 dead transitions. [2021-03-25 05:02:53,195 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 35 transitions, 237 flow [2021-03-25 05:02:53,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:02:53,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:02:53,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 660 transitions. [2021-03-25 05:02:53,197 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7603686635944701 [2021-03-25 05:02:53,197 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 660 transitions. [2021-03-25 05:02:53,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 660 transitions. [2021-03-25 05:02:53,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:53,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 660 transitions. [2021-03-25 05:02:53,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.28571428571429) internal successors, (660), 7 states have internal predecessors, (660), 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) [2021-03-25 05:02:53,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2021-03-25 05:02:53,201 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2021-03-25 05:02:53,202 INFO L185 Difference]: Start difference. First operand has 40 places, 25 transitions, 143 flow. Second operand 7 states and 660 transitions. [2021-03-25 05:02:53,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 35 transitions, 237 flow [2021-03-25 05:02:53,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 35 transitions, 237 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 05:02:53,204 INFO L241 Difference]: Finished difference. Result has 49 places, 29 transitions, 210 flow [2021-03-25 05:02:53,204 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=210, PETRI_PLACES=49, PETRI_TRANSITIONS=29} [2021-03-25 05:02:53,204 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2021-03-25 05:02:53,204 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:53,204 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 29 transitions, 210 flow [2021-03-25 05:02:53,205 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 29 transitions, 210 flow [2021-03-25 05:02:53,205 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 29 transitions, 210 flow [2021-03-25 05:02:53,215 INFO L129 PetriNetUnfolder]: 21/74 cut-off events. [2021-03-25 05:02:53,215 INFO L130 PetriNetUnfolder]: For 327/378 co-relation queries the response was YES. [2021-03-25 05:02:53,215 INFO L84 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 74 events. 21/74 cut-off events. For 327/378 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 274 event pairs, 3 based on Foata normal form. 6/79 useless extension candidates. Maximal degree in co-relation 310. Up to 43 conditions per place. [2021-03-25 05:02:53,216 INFO L142 LiptonReduction]: Number of co-enabled transitions 88 [2021-03-25 05:02:53,220 INFO L154 LiptonReduction]: Checked pairs total: 15 [2021-03-25 05:02:53,220 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:02:53,220 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16 [2021-03-25 05:02:53,220 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 27 transitions, 194 flow [2021-03-25 05:02:53,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 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) [2021-03-25 05:02:53,221 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:53,221 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:53,221 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 05:02:53,221 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:53,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:53,221 INFO L82 PathProgramCache]: Analyzing trace with hash -751044134, now seen corresponding path program 1 times [2021-03-25 05:02:53,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:53,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474657531] [2021-03-25 05:02:53,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:53,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:53,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:53,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:53,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:53,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:53,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:53,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:53,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:53,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:53,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474657531] [2021-03-25 05:02:53,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:53,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:02:53,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394065925] [2021-03-25 05:02:53,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:02:53,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:53,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:02:53,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:02:53,268 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 124 [2021-03-25 05:02:53,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 27 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 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) [2021-03-25 05:02:53,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:53,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 124 [2021-03-25 05:02:53,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:53,308 INFO L129 PetriNetUnfolder]: 16/56 cut-off events. [2021-03-25 05:02:53,309 INFO L130 PetriNetUnfolder]: For 346/395 co-relation queries the response was YES. [2021-03-25 05:02:53,310 INFO L84 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 56 events. 16/56 cut-off events. For 346/395 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 153 event pairs, 0 based on Foata normal form. 25/79 useless extension candidates. Maximal degree in co-relation 255. Up to 33 conditions per place. [2021-03-25 05:02:53,310 INFO L132 encePairwiseOnDemand]: 118/124 looper letters, 2 selfloop transitions, 10 changer transitions 9/30 dead transitions. [2021-03-25 05:02:53,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 30 transitions, 251 flow [2021-03-25 05:02:53,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:02:53,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:02:53,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 655 transitions. [2021-03-25 05:02:53,313 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7546082949308756 [2021-03-25 05:02:53,313 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 655 transitions. [2021-03-25 05:02:53,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 655 transitions. [2021-03-25 05:02:53,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:53,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 655 transitions. [2021-03-25 05:02:53,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.57142857142857) internal successors, (655), 7 states have internal predecessors, (655), 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) [2021-03-25 05:02:53,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2021-03-25 05:02:53,317 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2021-03-25 05:02:53,317 INFO L185 Difference]: Start difference. First operand has 48 places, 27 transitions, 194 flow. Second operand 7 states and 655 transitions. [2021-03-25 05:02:53,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 30 transitions, 251 flow [2021-03-25 05:02:53,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 30 transitions, 215 flow, removed 14 selfloop flow, removed 4 redundant places. [2021-03-25 05:02:53,319 INFO L241 Difference]: Finished difference. Result has 49 places, 21 transitions, 154 flow [2021-03-25 05:02:53,319 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=154, PETRI_PLACES=49, PETRI_TRANSITIONS=21} [2021-03-25 05:02:53,319 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2021-03-25 05:02:53,319 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:53,319 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 21 transitions, 154 flow [2021-03-25 05:02:53,320 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 21 transitions, 154 flow [2021-03-25 05:02:53,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 21 transitions, 154 flow [2021-03-25 05:02:53,323 INFO L129 PetriNetUnfolder]: 5/24 cut-off events. [2021-03-25 05:02:53,323 INFO L130 PetriNetUnfolder]: For 54/56 co-relation queries the response was YES. [2021-03-25 05:02:53,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 24 events. 5/24 cut-off events. For 54/56 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 22 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 83. Up to 11 conditions per place. [2021-03-25 05:02:53,324 INFO L142 LiptonReduction]: Number of co-enabled transitions 14 [2021-03-25 05:02:53,513 INFO L154 LiptonReduction]: Checked pairs total: 11 [2021-03-25 05:02:53,513 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 05:02:53,513 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 194 [2021-03-25 05:02:53,513 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 20 transitions, 171 flow [2021-03-25 05:02:53,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 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) [2021-03-25 05:02:53,514 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:53,514 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:53,514 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 05:02:53,514 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:53,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:53,514 INFO L82 PathProgramCache]: Analyzing trace with hash -257289432, now seen corresponding path program 1 times [2021-03-25 05:02:53,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:53,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561978147] [2021-03-25 05:02:53,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:53,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:53,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:02:53,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:53,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:53,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:53,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:53,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:53,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561978147] [2021-03-25 05:02:53,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:53,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:02:53,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183748441] [2021-03-25 05:02:53,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:02:53,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:53,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:02:53,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:02:53,564 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 129 [2021-03-25 05:02:53,565 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 20 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 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) [2021-03-25 05:02:53,565 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:53,565 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 129 [2021-03-25 05:02:53,565 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:53,591 INFO L129 PetriNetUnfolder]: 5/25 cut-off events. [2021-03-25 05:02:53,591 INFO L130 PetriNetUnfolder]: For 105/108 co-relation queries the response was YES. [2021-03-25 05:02:53,591 INFO L84 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 25 events. 5/25 cut-off events. For 105/108 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 36 event pairs, 0 based on Foata normal form. 4/29 useless extension candidates. Maximal degree in co-relation 113. Up to 10 conditions per place. [2021-03-25 05:02:53,591 INFO L132 encePairwiseOnDemand]: 122/129 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2021-03-25 05:02:53,591 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 19 transitions, 167 flow [2021-03-25 05:02:53,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:02:53,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:02:53,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 475 transitions. [2021-03-25 05:02:53,593 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7364341085271318 [2021-03-25 05:02:53,593 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 475 transitions. [2021-03-25 05:02:53,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 475 transitions. [2021-03-25 05:02:53,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:53,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 475 transitions. [2021-03-25 05:02:53,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 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) [2021-03-25 05:02:53,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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) [2021-03-25 05:02:53,597 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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) [2021-03-25 05:02:53,597 INFO L185 Difference]: Start difference. First operand has 44 places, 20 transitions, 171 flow. Second operand 5 states and 475 transitions. [2021-03-25 05:02:53,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 19 transitions, 167 flow [2021-03-25 05:02:53,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 19 transitions, 83 flow, removed 10 selfloop flow, removed 16 redundant places. [2021-03-25 05:02:53,598 INFO L241 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2021-03-25 05:02:53,598 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2021-03-25 05:02:53,598 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2021-03-25 05:02:53,599 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:53,599 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 0 transitions, 0 flow [2021-03-25 05:02:53,599 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 0 transitions, 0 flow [2021-03-25 05:02:53,599 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 05:02:53,599 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 05:02:53,599 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:02:53,599 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 05:02:53,599 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 05:02:53,599 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:02:53,600 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:02:53,600 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 05:02:53,600 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 05:02:53,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 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) [2021-03-25 05:02:53,601 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 05:02:53,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:02:53 BasicIcfg [2021-03-25 05:02:53,604 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:02:53,605 INFO L168 Benchmark]: Toolchain (without parser) took 5235.55 ms. Allocated memory was 255.9 MB in the beginning and 459.3 MB in the end (delta: 203.4 MB). Free memory was 234.1 MB in the beginning and 309.1 MB in the end (delta: -75.1 MB). Peak memory consumption was 128.5 MB. Max. memory is 16.0 GB. [2021-03-25 05:02:53,605 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:02:53,605 INFO L168 Benchmark]: CACSL2BoogieTranslator took 461.08 ms. Allocated memory was 255.9 MB in the beginning and 371.2 MB in the end (delta: 115.3 MB). Free memory was 234.1 MB in the beginning and 333.1 MB in the end (delta: -99.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-25 05:02:53,606 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.55 ms. Allocated memory is still 371.2 MB. Free memory was 333.1 MB in the beginning and 331.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:02:53,606 INFO L168 Benchmark]: Boogie Preprocessor took 17.33 ms. Allocated memory is still 371.2 MB. Free memory was 331.0 MB in the beginning and 330.1 MB in the end (delta: 938.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:02:53,606 INFO L168 Benchmark]: RCFGBuilder took 388.50 ms. Allocated memory is still 371.2 MB. Free memory was 330.1 MB in the beginning and 308.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:02:53,606 INFO L168 Benchmark]: TraceAbstraction took 4323.39 ms. Allocated memory was 371.2 MB in the beginning and 459.3 MB in the end (delta: 88.1 MB). Free memory was 307.5 MB in the beginning and 309.1 MB in the end (delta: -1.7 MB). Peak memory consumption was 88.4 MB. Max. memory is 16.0 GB. [2021-03-25 05:02:53,611 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 461.08 ms. Allocated memory was 255.9 MB in the beginning and 371.2 MB in the end (delta: 115.3 MB). Free memory was 234.1 MB in the beginning and 333.1 MB in the end (delta: -99.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 40.55 ms. Allocated memory is still 371.2 MB. Free memory was 333.1 MB in the beginning and 331.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 17.33 ms. Allocated memory is still 371.2 MB. Free memory was 331.0 MB in the beginning and 330.1 MB in the end (delta: 938.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 388.50 ms. Allocated memory is still 371.2 MB. Free memory was 330.1 MB in the beginning and 308.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4323.39 ms. Allocated memory was 371.2 MB in the beginning and 459.3 MB in the end (delta: 88.1 MB). Free memory was 307.5 MB in the beginning and 309.1 MB in the end (delta: -1.7 MB). Peak memory consumption was 88.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1491.7ms, 69 PlacesBefore, 31 PlacesAfterwards, 60 TransitionsBefore, 21 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 1328 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 680, positive: 633, positive conditional: 0, positive unconditional: 633, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 439, positive: 424, positive conditional: 0, positive unconditional: 424, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 439, positive: 424, positive conditional: 0, positive unconditional: 424, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 680, positive: 209, positive conditional: 0, positive unconditional: 209, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 439, unknown conditional: 0, unknown unconditional: 439] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 708.4ms, 40 PlacesBefore, 34 PlacesAfterwards, 25 TransitionsBefore, 22 TransitionsAfterwards, 162 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 72 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 25, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 25, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 24.9ms, 48 PlacesBefore, 44 PlacesAfterwards, 35 TransitionsBefore, 35 TransitionsAfterwards, 220 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 89 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 35, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.4ms, 51 PlacesBefore, 48 PlacesAfterwards, 28 TransitionsBefore, 28 TransitionsAfterwards, 108 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 62 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 35, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 41.0ms, 50 PlacesBefore, 48 PlacesAfterwards, 21 TransitionsBefore, 21 TransitionsAfterwards, 78 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 67 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 16, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 28, Positive cache size: 23, Positive conditional cache size: 0, Positive unconditional cache size: 23, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 109.0ms, 46 PlacesBefore, 41 PlacesAfterwards, 22 TransitionsBefore, 20 TransitionsAfterwards, 80 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 128 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 34, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 34, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 7, unknown conditional: 0, unknown unconditional: 7] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16.2ms, 40 PlacesBefore, 40 PlacesAfterwards, 25 TransitionsBefore, 25 TransitionsAfterwards, 90 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15.1ms, 49 PlacesBefore, 48 PlacesAfterwards, 29 TransitionsBefore, 27 TransitionsAfterwards, 88 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 15 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 15, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 15, Positive conditional cache size: 0, Positive unconditional cache size: 15, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 193.2ms, 49 PlacesBefore, 44 PlacesAfterwards, 21 TransitionsBefore, 20 TransitionsAfterwards, 14 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 11 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 11, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.7ms, 31 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4218.1ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 655.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1616.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 75 SDtfs, 103 SDslu, 104 SDs, 0 SdLazy, 209 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 143.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 220.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=284occurred in iteration=2, InterpolantAutomatonStates: 61, 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: 24.2ms SsaConstructionTime, 158.9ms SatisfiabilityAnalysisTime, 458.1ms InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 512 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...