/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/safe005_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 04:59:31,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 04:59:31,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 04:59:31,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 04:59:31,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 04:59:31,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 04:59:31,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 04:59:31,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 04:59:31,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 04:59:31,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 04:59:31,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 04:59:31,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 04:59:31,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 04:59:31,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 04:59:31,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 04:59:31,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 04:59:31,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 04:59:31,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 04:59:31,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 04:59:31,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 04:59:31,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 04:59:31,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 04:59:31,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 04:59:31,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 04:59:31,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 04:59:31,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 04:59:31,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 04:59:31,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 04:59:31,374 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 04:59:31,401 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 04:59:31,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 04:59:31,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 04:59:31,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 04:59:31,404 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 04:59:31,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 04:59:31,404 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 04:59:31,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 04:59:31,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 04:59:31,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 04:59:31,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 04:59:31,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 04:59:31,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 04:59:31,405 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 04:59:31,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 04:59:31,405 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 04:59:31,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 04:59:31,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 04:59:31,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 04:59:31,406 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 04:59:31,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 04:59:31,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 04:59:31,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 04:59:31,406 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 04:59:31,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 04:59:31,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 04:59:31,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 04:59:31,407 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 04:59:31,407 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 04:59:31,407 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 04:59:31,407 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 04:59:31,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 04:59:31,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 04:59:31,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 04:59:31,751 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 04:59:31,751 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 04:59:31,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2021-03-25 04:59:31,798 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a750dc0e4/c355630fb1c64d19b65a7e312e158265/FLAGf0b8df678 [2021-03-25 04:59:32,212 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 04:59:32,212 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2021-03-25 04:59:32,228 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a750dc0e4/c355630fb1c64d19b65a7e312e158265/FLAGf0b8df678 [2021-03-25 04:59:32,541 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a750dc0e4/c355630fb1c64d19b65a7e312e158265 [2021-03-25 04:59:32,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 04:59:32,544 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 04:59:32,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 04:59:32,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 04:59:32,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 04:59:32,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 04:59:32" (1/1) ... [2021-03-25 04:59:32,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@600a80cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:32, skipping insertion in model container [2021-03-25 04:59:32,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 04:59:32" (1/1) ... [2021-03-25 04:59:32,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 04:59:32,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 04:59:32,696 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/safe005_tso.oepc.i[950,963] [2021-03-25 04:59:32,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 04:59:32,780 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 04:59:32,824 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/safe005_tso.oepc.i[950,963] [2021-03-25 04:59:32,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 04:59:32,888 INFO L208 MainTranslator]: Completed translation [2021-03-25 04:59:32,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:32 WrapperNode [2021-03-25 04:59:32,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 04:59:32,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 04:59:32,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 04:59:32,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 04:59:32,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:32" (1/1) ... [2021-03-25 04:59:32,903 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:32" (1/1) ... [2021-03-25 04:59:32,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 04:59:32,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 04:59:32,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 04:59:32,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 04:59:32,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:32" (1/1) ... [2021-03-25 04:59:32,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:32" (1/1) ... [2021-03-25 04:59:32,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:32" (1/1) ... [2021-03-25 04:59:32,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:32" (1/1) ... [2021-03-25 04:59:32,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:32" (1/1) ... [2021-03-25 04:59:32,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:32" (1/1) ... [2021-03-25 04:59:32,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:32" (1/1) ... [2021-03-25 04:59:32,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 04:59:32,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 04:59:32,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 04:59:32,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 04:59:32,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:32" (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 04:59:32,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 04:59:32,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 04:59:32,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 04:59:32,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 04:59:32,984 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 04:59:32,984 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 04:59:32,984 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 04:59:32,984 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 04:59:32,984 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 04:59:32,984 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 04:59:32,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 04:59:32,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 04:59:32,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 04:59:32,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 04:59:32,986 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 04:59:33,236 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 04:59:33,236 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 04:59:33,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 04:59:33 BoogieIcfgContainer [2021-03-25 04:59:33,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 04:59:33,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 04:59:33,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 04:59:33,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 04:59:33,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 04:59:32" (1/3) ... [2021-03-25 04:59:33,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4585c4ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 04:59:33, skipping insertion in model container [2021-03-25 04:59:33,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:32" (2/3) ... [2021-03-25 04:59:33,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4585c4ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 04:59:33, skipping insertion in model container [2021-03-25 04:59:33,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 04:59:33" (3/3) ... [2021-03-25 04:59:33,244 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.oepc.i [2021-03-25 04:59:33,250 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 04:59:33,254 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 04:59:33,255 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 04:59:33,283 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,283 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,284 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,284 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,284 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,284 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,284 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,284 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,285 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,285 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,285 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,285 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,286 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,286 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,286 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,286 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,286 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,286 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,287 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,287 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,287 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,287 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,287 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,287 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,288 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,288 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,288 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,288 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,288 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,289 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,289 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,289 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,289 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,289 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,290 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,290 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,292 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,292 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,292 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,292 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,297 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,297 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,297 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,297 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,302 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,303 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,303 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,303 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:33,306 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 04:59:33,322 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 04:59:33,348 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 04:59:33,349 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 04:59:33,349 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 04:59:33,349 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 04:59:33,349 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 04:59:33,349 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 04:59:33,349 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 04:59:33,349 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 04:59:33,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-25 04:59:33,400 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-25 04:59:33,401 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:59:33,405 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 54 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 04:59:33,405 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-25 04:59:33,416 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-25 04:59:33,418 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:59:33,423 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-25 04:59:33,426 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-25 04:59:33,428 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-25 04:59:33,457 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-25 04:59:33,457 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:59:33,458 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 04:59:33,459 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-25 04:59:34,711 INFO L154 LiptonReduction]: Checked pairs total: 1010 [2021-03-25 04:59:34,712 INFO L156 LiptonReduction]: Total number of compositions: 38 [2021-03-25 04:59:34,713 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1296 [2021-03-25 04:59:34,719 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-25 04:59:34,719 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:59:34,719 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:59:34,720 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:59:34,720 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:59:34,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:59:34,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1013680624, now seen corresponding path program 1 times [2021-03-25 04:59:34,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:59:34,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938893011] [2021-03-25 04:59:34,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:59:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:59:34,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:34,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:34,857 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 04:59:34,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938893011] [2021-03-25 04:59:34,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:59:34,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 04:59:34,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878072066] [2021-03-25 04:59:34,863 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 04:59:34,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:59:34,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 04:59:34,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 04:59:34,872 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 113 [2021-03-25 04:59:34,874 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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 04:59:34,874 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:59:34,874 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 113 [2021-03-25 04:59:34,874 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:59:34,883 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-03-25 04:59:34,883 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:59:34,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 22 events. 0/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 04:59:34,884 INFO L132 encePairwiseOnDemand]: 110/113 looper letters, 1 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2021-03-25 04:59:34,884 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 22 transitions, 59 flow [2021-03-25 04:59:34,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 04:59:34,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 04:59:34,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2021-03-25 04:59:34,892 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.887905604719764 [2021-03-25 04:59:34,892 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2021-03-25 04:59:34,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2021-03-25 04:59:34,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:59:34,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2021-03-25 04:59:34,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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 04:59:34,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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 04:59:34,900 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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 04:59:34,901 INFO L185 Difference]: Start difference. First operand has 32 places, 22 transitions, 53 flow. Second operand 3 states and 301 transitions. [2021-03-25 04:59:34,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 22 transitions, 59 flow [2021-03-25 04:59:34,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 22 transitions, 56 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 04:59:34,904 INFO L241 Difference]: Finished difference. Result has 32 places, 22 transitions, 58 flow [2021-03-25 04:59:34,905 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2021-03-25 04:59:34,906 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2021-03-25 04:59:34,906 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:59:34,906 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 22 transitions, 58 flow [2021-03-25 04:59:34,906 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 22 transitions, 58 flow [2021-03-25 04:59:34,906 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 22 transitions, 58 flow [2021-03-25 04:59:34,909 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-03-25 04:59:34,909 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:59:34,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 22 events. 0/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 04:59:34,909 INFO L142 LiptonReduction]: Number of co-enabled transitions 160 [2021-03-25 04:59:35,290 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-25 04:59:35,445 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-25 04:59:35,498 INFO L154 LiptonReduction]: Checked pairs total: 437 [2021-03-25 04:59:35,498 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 04:59:35,499 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 593 [2021-03-25 04:59:35,499 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2021-03-25 04:59:35,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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 04:59:35,499 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:59:35,500 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:59:35,500 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 04:59:35,500 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:59:35,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:59:35,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1355243279, now seen corresponding path program 1 times [2021-03-25 04:59:35,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:59:35,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985600875] [2021-03-25 04:59:35,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:59:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:59:35,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:35,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 04:59:35,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:35,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:35,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:35,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:35,546 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 04:59:35,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985600875] [2021-03-25 04:59:35,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:59:35,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 04:59:35,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321498354] [2021-03-25 04:59:35,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 04:59:35,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:59:35,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 04:59:35,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 04:59:35,549 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 118 [2021-03-25 04:59:35,549 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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 04:59:35,549 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:59:35,549 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 118 [2021-03-25 04:59:35,550 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:59:35,572 INFO L129 PetriNetUnfolder]: 17/67 cut-off events. [2021-03-25 04:59:35,573 INFO L130 PetriNetUnfolder]: For 15/19 co-relation queries the response was YES. [2021-03-25 04:59:35,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 67 events. 17/67 cut-off events. For 15/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 242 event pairs, 3 based on Foata normal form. 9/75 useless extension candidates. Maximal degree in co-relation 123. Up to 24 conditions per place. [2021-03-25 04:59:35,573 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 6 selfloop transitions, 4 changer transitions 3/24 dead transitions. [2021-03-25 04:59:35,573 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 24 transitions, 91 flow [2021-03-25 04:59:35,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 04:59:35,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 04:59:35,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 391 transitions. [2021-03-25 04:59:35,575 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8283898305084746 [2021-03-25 04:59:35,576 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 391 transitions. [2021-03-25 04:59:35,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 391 transitions. [2021-03-25 04:59:35,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:59:35,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 391 transitions. [2021-03-25 04:59:35,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 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 04:59:35,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 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 04:59:35,579 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 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 04:59:35,579 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states and 391 transitions. [2021-03-25 04:59:35,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 24 transitions, 91 flow [2021-03-25 04:59:35,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 24 transitions, 85 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 04:59:35,580 INFO L241 Difference]: Finished difference. Result has 30 places, 19 transitions, 70 flow [2021-03-25 04:59:35,580 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2021-03-25 04:59:35,580 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, -2 predicate places. [2021-03-25 04:59:35,580 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:59:35,580 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 19 transitions, 70 flow [2021-03-25 04:59:35,581 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 19 transitions, 70 flow [2021-03-25 04:59:35,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 19 transitions, 70 flow [2021-03-25 04:59:35,584 INFO L129 PetriNetUnfolder]: 3/30 cut-off events. [2021-03-25 04:59:35,584 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-25 04:59:35,584 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 30 events. 3/30 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 64 event pairs, 1 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 55. Up to 10 conditions per place. [2021-03-25 04:59:35,584 INFO L142 LiptonReduction]: Number of co-enabled transitions 130 [2021-03-25 04:59:35,585 INFO L154 LiptonReduction]: Checked pairs total: 88 [2021-03-25 04:59:35,585 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:59:35,586 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-25 04:59:35,586 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 70 flow [2021-03-25 04:59:35,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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 04:59:35,586 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:59:35,586 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:59:35,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 04:59:35,587 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:59:35,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:59:35,587 INFO L82 PathProgramCache]: Analyzing trace with hash 21009677, now seen corresponding path program 1 times [2021-03-25 04:59:35,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:59:35,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571588825] [2021-03-25 04:59:35,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:59:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:59:35,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:35,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:35,637 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 04:59:35,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571588825] [2021-03-25 04:59:35,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:59:35,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 04:59:35,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14882179] [2021-03-25 04:59:35,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 04:59:35,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:59:35,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 04:59:35,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 04:59:35,639 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 118 [2021-03-25 04:59:35,639 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 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 04:59:35,639 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:59:35,639 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 118 [2021-03-25 04:59:35,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:59:35,649 INFO L129 PetriNetUnfolder]: 3/28 cut-off events. [2021-03-25 04:59:35,649 INFO L130 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2021-03-25 04:59:35,650 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 28 events. 3/28 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 1 based on Foata normal form. 2/28 useless extension candidates. Maximal degree in co-relation 58. Up to 10 conditions per place. [2021-03-25 04:59:35,650 INFO L132 encePairwiseOnDemand]: 115/118 looper letters, 1 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2021-03-25 04:59:35,650 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 19 transitions, 76 flow [2021-03-25 04:59:35,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 04:59:35,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 04:59:35,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2021-03-25 04:59:35,654 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8757062146892656 [2021-03-25 04:59:35,654 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2021-03-25 04:59:35,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2021-03-25 04:59:35,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:59:35,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2021-03-25 04:59:35,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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 04:59:35,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 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 04:59:35,656 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 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 04:59:35,656 INFO L185 Difference]: Start difference. First operand has 30 places, 19 transitions, 70 flow. Second operand 3 states and 310 transitions. [2021-03-25 04:59:35,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 19 transitions, 76 flow [2021-03-25 04:59:35,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 19 transitions, 69 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 04:59:35,658 INFO L241 Difference]: Finished difference. Result has 31 places, 19 transitions, 71 flow [2021-03-25 04:59:35,658 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2021-03-25 04:59:35,658 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2021-03-25 04:59:35,658 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:59:35,658 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 19 transitions, 71 flow [2021-03-25 04:59:35,658 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 19 transitions, 71 flow [2021-03-25 04:59:35,659 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 19 transitions, 71 flow [2021-03-25 04:59:35,662 INFO L129 PetriNetUnfolder]: 3/30 cut-off events. [2021-03-25 04:59:35,663 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-03-25 04:59:35,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 30 events. 3/30 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 1 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 55. Up to 10 conditions per place. [2021-03-25 04:59:35,663 INFO L142 LiptonReduction]: Number of co-enabled transitions 128 [2021-03-25 04:59:35,665 INFO L154 LiptonReduction]: Checked pairs total: 86 [2021-03-25 04:59:35,665 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:59:35,665 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-25 04:59:35,665 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 71 flow [2021-03-25 04:59:35,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 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 04:59:35,666 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:59:35,666 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:59:35,666 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 04:59:35,666 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:59:35,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:59:35,667 INFO L82 PathProgramCache]: Analyzing trace with hash 672632917, now seen corresponding path program 1 times [2021-03-25 04:59:35,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:59:35,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289735439] [2021-03-25 04:59:35,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:59:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:59:35,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:35,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 04:59:35,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:35,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:35,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:35,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:35,722 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 04:59:35,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289735439] [2021-03-25 04:59:35,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:59:35,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 04:59:35,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474102990] [2021-03-25 04:59:35,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 04:59:35,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:59:35,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 04:59:35,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 04:59:35,724 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 118 [2021-03-25 04:59:35,724 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 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 04:59:35,724 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:59:35,724 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 118 [2021-03-25 04:59:35,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:59:35,748 INFO L129 PetriNetUnfolder]: 4/43 cut-off events. [2021-03-25 04:59:35,748 INFO L130 PetriNetUnfolder]: For 30/36 co-relation queries the response was YES. [2021-03-25 04:59:35,748 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 43 events. 4/43 cut-off events. For 30/36 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 136 event pairs, 0 based on Foata normal form. 5/48 useless extension candidates. Maximal degree in co-relation 97. Up to 13 conditions per place. [2021-03-25 04:59:35,749 INFO L132 encePairwiseOnDemand]: 114/118 looper letters, 7 selfloop transitions, 4 changer transitions 2/24 dead transitions. [2021-03-25 04:59:35,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 24 transitions, 122 flow [2021-03-25 04:59:35,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 04:59:35,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 04:59:35,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 484 transitions. [2021-03-25 04:59:35,750 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8203389830508474 [2021-03-25 04:59:35,750 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 484 transitions. [2021-03-25 04:59:35,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 484 transitions. [2021-03-25 04:59:35,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:59:35,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 484 transitions. [2021-03-25 04:59:35,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 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 04:59:35,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 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 04:59:35,769 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 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 04:59:35,770 INFO L185 Difference]: Start difference. First operand has 31 places, 19 transitions, 71 flow. Second operand 5 states and 484 transitions. [2021-03-25 04:59:35,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 24 transitions, 122 flow [2021-03-25 04:59:35,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 24 transitions, 109 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-03-25 04:59:35,771 INFO L241 Difference]: Finished difference. Result has 36 places, 21 transitions, 99 flow [2021-03-25 04:59:35,771 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=21} [2021-03-25 04:59:35,771 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2021-03-25 04:59:35,771 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:59:35,771 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 21 transitions, 99 flow [2021-03-25 04:59:35,771 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 21 transitions, 99 flow [2021-03-25 04:59:35,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 21 transitions, 99 flow [2021-03-25 04:59:35,775 INFO L129 PetriNetUnfolder]: 2/31 cut-off events. [2021-03-25 04:59:35,775 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-03-25 04:59:35,775 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 31 events. 2/31 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 71 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 67. Up to 10 conditions per place. [2021-03-25 04:59:35,776 INFO L142 LiptonReduction]: Number of co-enabled transitions 128 [2021-03-25 04:59:35,777 INFO L154 LiptonReduction]: Checked pairs total: 129 [2021-03-25 04:59:35,777 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:59:35,777 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-25 04:59:35,777 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 21 transitions, 99 flow [2021-03-25 04:59:35,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 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 04:59:35,778 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:59:35,778 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:59:35,778 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 04:59:35,778 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:59:35,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:59:35,778 INFO L82 PathProgramCache]: Analyzing trace with hash 69954839, now seen corresponding path program 1 times [2021-03-25 04:59:35,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:59:35,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719892065] [2021-03-25 04:59:35,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:59:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:59:35,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:35,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:35,840 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 04:59:35,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 04:59:35,846 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 04:59:35,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719892065] [2021-03-25 04:59:35,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:59:35,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 04:59:35,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120322640] [2021-03-25 04:59:35,846 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 04:59:35,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:59:35,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 04:59:35,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 04:59:35,851 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 118 [2021-03-25 04:59:35,852 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 21 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 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 04:59:35,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:59:35,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 118 [2021-03-25 04:59:35,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:59:35,891 INFO L129 PetriNetUnfolder]: 63/141 cut-off events. [2021-03-25 04:59:35,892 INFO L130 PetriNetUnfolder]: For 413/459 co-relation queries the response was YES. [2021-03-25 04:59:35,892 INFO L84 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 141 events. 63/141 cut-off events. For 413/459 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 601 event pairs, 21 based on Foata normal form. 22/152 useless extension candidates. Maximal degree in co-relation 362. Up to 92 conditions per place. [2021-03-25 04:59:35,893 INFO L132 encePairwiseOnDemand]: 112/118 looper letters, 6 selfloop transitions, 4 changer transitions 7/31 dead transitions. [2021-03-25 04:59:35,893 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 31 transitions, 153 flow [2021-03-25 04:59:35,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 04:59:35,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 04:59:35,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 453 transitions. [2021-03-25 04:59:35,894 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7677966101694915 [2021-03-25 04:59:35,894 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 453 transitions. [2021-03-25 04:59:35,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 453 transitions. [2021-03-25 04:59:35,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:59:35,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 453 transitions. [2021-03-25 04:59:35,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 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 04:59:35,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 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 04:59:35,896 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 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 04:59:35,896 INFO L185 Difference]: Start difference. First operand has 34 places, 21 transitions, 99 flow. Second operand 5 states and 453 transitions. [2021-03-25 04:59:35,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 31 transitions, 153 flow [2021-03-25 04:59:35,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 31 transitions, 135 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-03-25 04:59:35,898 INFO L241 Difference]: Finished difference. Result has 37 places, 24 transitions, 121 flow [2021-03-25 04:59:35,898 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2021-03-25 04:59:35,898 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 5 predicate places. [2021-03-25 04:59:35,898 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:59:35,898 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 24 transitions, 121 flow [2021-03-25 04:59:35,899 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 24 transitions, 121 flow [2021-03-25 04:59:35,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 24 transitions, 121 flow [2021-03-25 04:59:35,905 INFO L129 PetriNetUnfolder]: 52/113 cut-off events. [2021-03-25 04:59:35,905 INFO L130 PetriNetUnfolder]: For 212/229 co-relation queries the response was YES. [2021-03-25 04:59:35,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 113 events. 52/113 cut-off events. For 212/229 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 446 event pairs, 19 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 342. Up to 75 conditions per place. [2021-03-25 04:59:35,907 INFO L142 LiptonReduction]: Number of co-enabled transitions 124 [2021-03-25 04:59:35,909 INFO L154 LiptonReduction]: Checked pairs total: 83 [2021-03-25 04:59:35,909 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:59:35,909 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-03-25 04:59:35,909 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 121 flow [2021-03-25 04:59:35,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 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 04:59:35,910 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:59:35,910 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:59:35,910 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 04:59:35,910 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:59:35,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:59:35,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1155791960, now seen corresponding path program 1 times [2021-03-25 04:59:35,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:59:35,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859439186] [2021-03-25 04:59:35,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:59:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:59:35,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:35,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:35,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:35,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:35,939 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 04:59:35,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 04:59:35,943 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 04:59:35,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859439186] [2021-03-25 04:59:35,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:59:35,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 04:59:35,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133198359] [2021-03-25 04:59:35,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 04:59:35,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:59:35,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 04:59:35,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 04:59:35,945 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 118 [2021-03-25 04:59:35,945 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 121 flow. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 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 04:59:35,945 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:59:35,945 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 118 [2021-03-25 04:59:35,945 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:59:35,975 INFO L129 PetriNetUnfolder]: 36/101 cut-off events. [2021-03-25 04:59:35,975 INFO L130 PetriNetUnfolder]: For 349/433 co-relation queries the response was YES. [2021-03-25 04:59:35,976 INFO L84 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 101 events. 36/101 cut-off events. For 349/433 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 399 event pairs, 3 based on Foata normal form. 38/135 useless extension candidates. Maximal degree in co-relation 368. Up to 73 conditions per place. [2021-03-25 04:59:35,976 INFO L132 encePairwiseOnDemand]: 112/118 looper letters, 6 selfloop transitions, 7 changer transitions 7/34 dead transitions. [2021-03-25 04:59:35,976 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 219 flow [2021-03-25 04:59:35,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 04:59:35,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 04:59:35,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 543 transitions. [2021-03-25 04:59:35,978 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7669491525423728 [2021-03-25 04:59:35,978 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 543 transitions. [2021-03-25 04:59:35,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 543 transitions. [2021-03-25 04:59:35,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:59:35,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 543 transitions. [2021-03-25 04:59:35,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.5) internal successors, (543), 6 states have internal predecessors, (543), 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 04:59:35,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 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 04:59:35,980 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 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 04:59:35,980 INFO L185 Difference]: Start difference. First operand has 35 places, 24 transitions, 121 flow. Second operand 6 states and 543 transitions. [2021-03-25 04:59:35,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 219 flow [2021-03-25 04:59:35,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 211 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-25 04:59:35,982 INFO L241 Difference]: Finished difference. Result has 41 places, 27 transitions, 173 flow [2021-03-25 04:59:35,982 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=173, PETRI_PLACES=41, PETRI_TRANSITIONS=27} [2021-03-25 04:59:35,982 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2021-03-25 04:59:35,982 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:59:35,982 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 27 transitions, 173 flow [2021-03-25 04:59:35,982 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 27 transitions, 173 flow [2021-03-25 04:59:35,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 27 transitions, 173 flow [2021-03-25 04:59:35,987 INFO L129 PetriNetUnfolder]: 25/74 cut-off events. [2021-03-25 04:59:35,987 INFO L130 PetriNetUnfolder]: For 254/292 co-relation queries the response was YES. [2021-03-25 04:59:35,988 INFO L84 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 74 events. 25/74 cut-off events. For 254/292 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 251 event pairs, 3 based on Foata normal form. 4/76 useless extension candidates. Maximal degree in co-relation 289. Up to 46 conditions per place. [2021-03-25 04:59:35,988 INFO L142 LiptonReduction]: Number of co-enabled transitions 116 [2021-03-25 04:59:35,990 INFO L154 LiptonReduction]: Checked pairs total: 81 [2021-03-25 04:59:35,990 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:59:35,990 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-25 04:59:35,990 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 173 flow [2021-03-25 04:59:35,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 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 04:59:35,991 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:59:35,991 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:59:35,991 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 04:59:35,991 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:59:35,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:59:35,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1482690072, now seen corresponding path program 1 times [2021-03-25 04:59:35,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:59:35,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769405969] [2021-03-25 04:59:35,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:59:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:59:36,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:36,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:36,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:36,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:36,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:36,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:36,040 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 04:59:36,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 04:59:36,046 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 04:59:36,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769405969] [2021-03-25 04:59:36,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:59:36,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 04:59:36,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407978453] [2021-03-25 04:59:36,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 04:59:36,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:59:36,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 04:59:36,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 04:59:36,050 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 118 [2021-03-25 04:59:36,050 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 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 04:59:36,052 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:59:36,052 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 118 [2021-03-25 04:59:36,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:59:36,108 INFO L129 PetriNetUnfolder]: 16/63 cut-off events. [2021-03-25 04:59:36,109 INFO L130 PetriNetUnfolder]: For 324/393 co-relation queries the response was YES. [2021-03-25 04:59:36,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 63 events. 16/63 cut-off events. For 324/393 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 197 event pairs, 0 based on Foata normal form. 33/93 useless extension candidates. Maximal degree in co-relation 270. Up to 43 conditions per place. [2021-03-25 04:59:36,110 INFO L132 encePairwiseOnDemand]: 112/118 looper letters, 3 selfloop transitions, 10 changer transitions 4/30 dead transitions. [2021-03-25 04:59:36,110 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 30 transitions, 239 flow [2021-03-25 04:59:36,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 04:59:36,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 04:59:36,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 627 transitions. [2021-03-25 04:59:36,111 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7590799031476998 [2021-03-25 04:59:36,111 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 627 transitions. [2021-03-25 04:59:36,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 627 transitions. [2021-03-25 04:59:36,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:59:36,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 627 transitions. [2021-03-25 04:59:36,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.57142857142857) internal successors, (627), 7 states have internal predecessors, (627), 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 04:59:36,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 118.0) internal successors, (944), 8 states have internal predecessors, (944), 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 04:59:36,115 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 118.0) internal successors, (944), 8 states have internal predecessors, (944), 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 04:59:36,115 INFO L185 Difference]: Start difference. First operand has 39 places, 27 transitions, 173 flow. Second operand 7 states and 627 transitions. [2021-03-25 04:59:36,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 30 transitions, 239 flow [2021-03-25 04:59:36,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 30 transitions, 199 flow, removed 16 selfloop flow, removed 4 redundant places. [2021-03-25 04:59:36,119 INFO L241 Difference]: Finished difference. Result has 44 places, 26 transitions, 171 flow [2021-03-25 04:59:36,119 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=35, 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=171, PETRI_PLACES=44, PETRI_TRANSITIONS=26} [2021-03-25 04:59:36,120 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 12 predicate places. [2021-03-25 04:59:36,120 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:59:36,120 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 26 transitions, 171 flow [2021-03-25 04:59:36,120 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 26 transitions, 171 flow [2021-03-25 04:59:36,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 26 transitions, 171 flow [2021-03-25 04:59:36,125 INFO L129 PetriNetUnfolder]: 12/50 cut-off events. [2021-03-25 04:59:36,125 INFO L130 PetriNetUnfolder]: For 105/116 co-relation queries the response was YES. [2021-03-25 04:59:36,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 50 events. 12/50 cut-off events. For 105/116 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 126 event pairs, 0 based on Foata normal form. 1/49 useless extension candidates. Maximal degree in co-relation 162. Up to 23 conditions per place. [2021-03-25 04:59:36,126 INFO L142 LiptonReduction]: Number of co-enabled transitions 104 [2021-03-25 04:59:36,184 INFO L154 LiptonReduction]: Checked pairs total: 136 [2021-03-25 04:59:36,184 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 04:59:36,184 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 64 [2021-03-25 04:59:36,185 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 26 transitions, 177 flow [2021-03-25 04:59:36,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 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 04:59:36,185 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:59:36,185 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:59:36,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 04:59:36,185 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:59:36,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:59:36,186 INFO L82 PathProgramCache]: Analyzing trace with hash -2079264532, now seen corresponding path program 1 times [2021-03-25 04:59:36,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:59:36,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567589805] [2021-03-25 04:59:36,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:59:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:59:36,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:36,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 04:59:36,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:36,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:36,242 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 04:59:36,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 04:59:36,249 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 04:59:36,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567589805] [2021-03-25 04:59:36,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:59:36,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 04:59:36,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208994349] [2021-03-25 04:59:36,251 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 04:59:36,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:59:36,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 04:59:36,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 04:59:36,254 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 119 [2021-03-25 04:59:36,254 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 26 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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 04:59:36,254 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:59:36,254 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 119 [2021-03-25 04:59:36,254 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:59:36,280 INFO L129 PetriNetUnfolder]: 26/83 cut-off events. [2021-03-25 04:59:36,280 INFO L130 PetriNetUnfolder]: For 169/188 co-relation queries the response was YES. [2021-03-25 04:59:36,280 INFO L84 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 83 events. 26/83 cut-off events. For 169/188 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 279 event pairs, 1 based on Foata normal form. 6/85 useless extension candidates. Maximal degree in co-relation 262. Up to 30 conditions per place. [2021-03-25 04:59:36,281 INFO L132 encePairwiseOnDemand]: 111/119 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2021-03-25 04:59:36,281 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 32 transitions, 204 flow [2021-03-25 04:59:36,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 04:59:36,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 04:59:36,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 452 transitions. [2021-03-25 04:59:36,283 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7596638655462185 [2021-03-25 04:59:36,283 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 452 transitions. [2021-03-25 04:59:36,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 452 transitions. [2021-03-25 04:59:36,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:59:36,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 452 transitions. [2021-03-25 04:59:36,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 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 04:59:36,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 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 04:59:36,285 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 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 04:59:36,285 INFO L185 Difference]: Start difference. First operand has 42 places, 26 transitions, 177 flow. Second operand 5 states and 452 transitions. [2021-03-25 04:59:36,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 32 transitions, 204 flow [2021-03-25 04:59:36,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 32 transitions, 170 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-03-25 04:59:36,286 INFO L241 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2021-03-25 04:59:36,286 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2021-03-25 04:59:36,286 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 8 predicate places. [2021-03-25 04:59:36,286 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:59:36,286 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 0 transitions, 0 flow [2021-03-25 04:59:36,287 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 0 transitions, 0 flow [2021-03-25 04:59:36,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 04:59:36,287 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 04:59:36,287 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:59:36,287 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 04:59:36,287 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 04:59:36,287 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 04:59:36,287 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:59:36,287 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 04:59:36,287 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 04:59:36,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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 04:59:36,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 04:59:36,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 04:59:36 BasicIcfg [2021-03-25 04:59:36,290 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 04:59:36,291 INFO L168 Benchmark]: Toolchain (without parser) took 3746.78 ms. Allocated memory was 318.8 MB in the beginning and 385.9 MB in the end (delta: 67.1 MB). Free memory was 281.4 MB in the beginning and 317.0 MB in the end (delta: -35.6 MB). Peak memory consumption was 32.8 MB. Max. memory is 16.0 GB. [2021-03-25 04:59:36,291 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 318.8 MB. Free memory is still 299.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 04:59:36,293 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.98 ms. Allocated memory is still 318.8 MB. Free memory was 281.2 MB in the beginning and 282.8 MB in the end (delta: -1.6 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.0 GB. [2021-03-25 04:59:36,294 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.93 ms. Allocated memory is still 318.8 MB. Free memory was 282.8 MB in the beginning and 280.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 04:59:36,294 INFO L168 Benchmark]: Boogie Preprocessor took 15.07 ms. Allocated memory is still 318.8 MB. Free memory was 280.7 MB in the beginning and 279.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 04:59:36,294 INFO L168 Benchmark]: RCFGBuilder took 307.09 ms. Allocated memory is still 318.8 MB. Free memory was 279.6 MB in the beginning and 256.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-25 04:59:36,295 INFO L168 Benchmark]: TraceAbstraction took 3050.44 ms. Allocated memory was 318.8 MB in the beginning and 385.9 MB in the end (delta: 67.1 MB). Free memory was 255.5 MB in the beginning and 317.0 MB in the end (delta: -61.5 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.0 GB. [2021-03-25 04:59:36,296 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 318.8 MB. Free memory is still 299.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 341.98 ms. Allocated memory is still 318.8 MB. Free memory was 281.2 MB in the beginning and 282.8 MB in the end (delta: -1.6 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.93 ms. Allocated memory is still 318.8 MB. Free memory was 282.8 MB in the beginning and 280.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 15.07 ms. Allocated memory is still 318.8 MB. Free memory was 280.7 MB in the beginning and 279.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 307.09 ms. Allocated memory is still 318.8 MB. Free memory was 279.6 MB in the beginning and 256.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3050.44 ms. Allocated memory was 318.8 MB in the beginning and 385.9 MB in the end (delta: 67.1 MB). Free memory was 255.5 MB in the beginning and 317.0 MB in the end (delta: -61.5 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1285.8ms, 69 PlacesBefore, 32 PlacesAfterwards, 60 TransitionsBefore, 22 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 38 TotalNumberOfCompositions, 1010 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 626, positive: 590, positive conditional: 0, positive unconditional: 590, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 413, positive: 399, positive conditional: 0, positive unconditional: 399, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 413, positive: 399, positive conditional: 0, positive unconditional: 399, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 626, positive: 191, positive conditional: 0, positive unconditional: 191, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 413, unknown conditional: 0, unknown unconditional: 413] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 592.5ms, 32 PlacesBefore, 27 PlacesAfterwards, 22 TransitionsBefore, 17 TransitionsAfterwards, 160 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 437 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 137, positive: 97, positive conditional: 0, positive unconditional: 97, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 25, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 25, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 137, positive: 85, positive conditional: 0, positive unconditional: 85, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 25, unknown conditional: 0, unknown unconditional: 25] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.9ms, 30 PlacesBefore, 30 PlacesAfterwards, 19 TransitionsBefore, 19 TransitionsAfterwards, 130 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 88 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 35, positive: 26, positive conditional: 0, positive unconditional: 26, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, 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: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 35, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.3ms, 31 PlacesBefore, 31 PlacesAfterwards, 19 TransitionsBefore, 19 TransitionsAfterwards, 128 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 86 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 30, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, 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: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 30, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 44, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.3ms, 36 PlacesBefore, 34 PlacesAfterwards, 21 TransitionsBefore, 21 TransitionsAfterwards, 128 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 129 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 48, positive: 36, positive conditional: 0, positive unconditional: 36, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, 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: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 48, positive: 33, positive conditional: 0, positive unconditional: 33, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.3ms, 37 PlacesBefore, 35 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 124 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 83 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 24, positive: 17, positive conditional: 0, positive unconditional: 17, 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: 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: 24, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.2ms, 41 PlacesBefore, 39 PlacesAfterwards, 27 TransitionsBefore, 27 TransitionsAfterwards, 116 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 81 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 38, positive: 31, positive conditional: 0, positive unconditional: 31, 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: 38, positive: 29, positive conditional: 0, positive unconditional: 29, 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): 50, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 64.1ms, 44 PlacesBefore, 42 PlacesAfterwards, 26 TransitionsBefore, 26 TransitionsAfterwards, 104 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 136 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 90, positive: 76, positive conditional: 0, positive unconditional: 76, negative: 14, negative conditional: 0, negative unconditional: 14, 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: 90, positive: 76, positive conditional: 0, positive unconditional: 76, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.5ms, 40 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): 42, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - 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: 2.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2943.3ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 328.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1367.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 36 SDtfs, 20 SDslu, 21 SDs, 0 SdLazy, 121 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 66.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 69.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=177occurred in iteration=7, InterpolantAutomatonStates: 38, 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: 12.2ms SsaConstructionTime, 116.0ms SatisfiabilityAnalysisTime, 279.8ms InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 361 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...