/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/safe030_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:09:33,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:09:33,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:09:33,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:09:33,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:09:33,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:09:33,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:09:33,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:09:33,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:09:33,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:09:33,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:09:33,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:09:33,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:09:33,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:09:33,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:09:33,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:09:33,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:09:33,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:09:33,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:09:33,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:09:33,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:09:33,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:09:33,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:09:33,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:09:33,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 05:09:33,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 05:09:33,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 05:09:33,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 05:09:33,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 05:09:33,917 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 05:09:33,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 05:09:33,918 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 05:09:33,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 05:09:33,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:09:33,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:09:33,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:09:33,920 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf [2021-03-25 05:09:33,954 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:09:33,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:09:33,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:09:33,958 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:09:33,958 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:09:33,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:09:33,958 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:09:33,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:09:33,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:09:33,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:09:33,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:09:33,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:09:33,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:09:33,961 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:09:33,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:09:33,961 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:09:33,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:09:33,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:09:33,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:09:33,962 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:09:33,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:09:33,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:09:33,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:09:33,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:09:33,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:09:33,963 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:09:33,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:09:33,963 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:09:33,963 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:09:33,963 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:09:33,964 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:09:34,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:09:34,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:09:34,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:09:34,304 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:09:34,305 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:09:34,305 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i [2021-03-25 05:09:34,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce9e94259/57c6200f469a4818990697af0b0419a9/FLAGa16084b44 [2021-03-25 05:09:34,972 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:09:34,972 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i [2021-03-25 05:09:34,993 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce9e94259/57c6200f469a4818990697af0b0419a9/FLAGa16084b44 [2021-03-25 05:09:35,183 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce9e94259/57c6200f469a4818990697af0b0419a9 [2021-03-25 05:09:35,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:09:35,186 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:09:35,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:09:35,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:09:35,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:09:35,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:09:35" (1/1) ... [2021-03-25 05:09:35,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2017373d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:35, skipping insertion in model container [2021-03-25 05:09:35,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:09:35" (1/1) ... [2021-03-25 05:09:35,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:09:35,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:09:35,406 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/safe030_tso.opt.i[949,962] [2021-03-25 05:09:35,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:09:35,530 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:09:35,540 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/safe030_tso.opt.i[949,962] [2021-03-25 05:09:35,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:09:35,663 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:09:35,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:35 WrapperNode [2021-03-25 05:09:35,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:09:35,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:09:35,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:09:35,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:09:35,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:35" (1/1) ... [2021-03-25 05:09:35,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:35" (1/1) ... [2021-03-25 05:09:35,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:09:35,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:09:35,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:09:35,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:09:35,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:35" (1/1) ... [2021-03-25 05:09:35,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:35" (1/1) ... [2021-03-25 05:09:35,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:35" (1/1) ... [2021-03-25 05:09:35,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:35" (1/1) ... [2021-03-25 05:09:35,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:35" (1/1) ... [2021-03-25 05:09:35,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:35" (1/1) ... [2021-03-25 05:09:35,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:35" (1/1) ... [2021-03-25 05:09:35,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:09:35,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:09:35,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:09:35,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:09:35,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:09:35,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:09:35,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:09:35,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:09:35,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:09:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 05:09:35,803 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 05:09:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 05:09:35,804 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 05:09:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 05:09:35,804 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 05:09:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:09:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:09:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:09:35,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:09:35,806 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 05:09:36,116 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:09:36,119 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 05:09:36,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:09:36 BoogieIcfgContainer [2021-03-25 05:09:36,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:09:36,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:09:36,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:09:36,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:09:36,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:09:35" (1/3) ... [2021-03-25 05:09:36,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c62fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:09:36, skipping insertion in model container [2021-03-25 05:09:36,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:35" (2/3) ... [2021-03-25 05:09:36,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c62fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:09:36, skipping insertion in model container [2021-03-25 05:09:36,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:09:36" (3/3) ... [2021-03-25 05:09:36,126 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_tso.opt.i [2021-03-25 05:09:36,131 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:09:36,135 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 05:09:36,135 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:09:36,158 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,158 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,158 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,158 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,158 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,159 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,159 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,159 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,159 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,159 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,160 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,160 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,160 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,160 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,160 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,160 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,160 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,160 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,161 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,161 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,161 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,161 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,161 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,161 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,162 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,162 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,162 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,162 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,162 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,162 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,162 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,162 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,163 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,163 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,163 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,163 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,165 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,165 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,165 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,165 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,173 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,173 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,173 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,173 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,177 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,177 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,177 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,178 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:36,181 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:09:36,197 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 05:09:36,214 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:09:36,214 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:09:36,214 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:09:36,214 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:09:36,214 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:09:36,214 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:09:36,214 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:09:36,214 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:09:36,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-03-25 05:09:36,254 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-03-25 05:09:36,255 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:09:36,257 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-25 05:09:36,258 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 161 flow [2021-03-25 05:09:36,261 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2021-03-25 05:09:36,262 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:36,270 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-25 05:09:36,272 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-25 05:09:36,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 58 transitions, 125 flow [2021-03-25 05:09:36,287 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-03-25 05:09:36,287 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:09:36,288 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 58 events. 1/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-25 05:09:36,290 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-25 05:09:37,484 INFO L154 LiptonReduction]: Checked pairs total: 1207 [2021-03-25 05:09:37,484 INFO L156 LiptonReduction]: Total number of compositions: 38 [2021-03-25 05:09:37,487 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1225 [2021-03-25 05:09:37,501 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-25 05:09:37,501 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:09:37,501 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:37,502 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:37,502 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:37,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:37,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1494745171, now seen corresponding path program 1 times [2021-03-25 05:09:37,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:37,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874317616] [2021-03-25 05:09:37,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:37,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:37,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:09:37,795 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:09:37,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:09:37,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:37,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874317616] [2021-03-25 05:09:37,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:37,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:09:37,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575442116] [2021-03-25 05:09:37,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:09:37,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:37,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:09:37,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:09:37,832 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 111 [2021-03-25 05:09:37,836 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:37,836 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:37,837 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 111 [2021-03-25 05:09:37,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:37,914 INFO L129 PetriNetUnfolder]: 90/214 cut-off events. [2021-03-25 05:09:37,914 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:09:37,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 214 events. 90/214 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 995 event pairs, 28 based on Foata normal form. 14/218 useless extension candidates. Maximal degree in co-relation 380. Up to 85 conditions per place. [2021-03-25 05:09:37,919 INFO L132 encePairwiseOnDemand]: 103/111 looper letters, 7 selfloop transitions, 7 changer transitions 0/26 dead transitions. [2021-03-25 05:09:37,919 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 89 flow [2021-03-25 05:09:37,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:09:37,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:09:37,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2021-03-25 05:09:37,935 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8378378378378378 [2021-03-25 05:09:37,936 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2021-03-25 05:09:37,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2021-03-25 05:09:37,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:37,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2021-03-25 05:09:37,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:37,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:37,952 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:37,954 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 49 flow. Second operand 3 states and 279 transitions. [2021-03-25 05:09:37,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 89 flow [2021-03-25 05:09:37,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 86 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 05:09:37,961 INFO L241 Difference]: Finished difference. Result has 31 places, 26 transitions, 100 flow [2021-03-25 05:09:37,963 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2021-03-25 05:09:37,964 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2021-03-25 05:09:37,964 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:37,964 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 26 transitions, 100 flow [2021-03-25 05:09:37,965 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 26 transitions, 100 flow [2021-03-25 05:09:37,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 26 transitions, 100 flow [2021-03-25 05:09:37,995 INFO L129 PetriNetUnfolder]: 90/214 cut-off events. [2021-03-25 05:09:37,995 INFO L130 PetriNetUnfolder]: For 25/33 co-relation queries the response was YES. [2021-03-25 05:09:37,997 INFO L84 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 214 events. 90/214 cut-off events. For 25/33 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1007 event pairs, 34 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 467. Up to 85 conditions per place. [2021-03-25 05:09:38,000 INFO L142 LiptonReduction]: Number of co-enabled transitions 172 [2021-03-25 05:09:38,503 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-03-25 05:09:38,716 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-03-25 05:09:38,812 INFO L154 LiptonReduction]: Checked pairs total: 204 [2021-03-25 05:09:38,812 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 05:09:38,812 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 848 [2021-03-25 05:09:38,813 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 94 flow [2021-03-25 05:09:38,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:38,813 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:38,814 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:38,814 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:09:38,814 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:38,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:38,815 INFO L82 PathProgramCache]: Analyzing trace with hash -59456381, now seen corresponding path program 1 times [2021-03-25 05:09:38,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:38,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602714343] [2021-03-25 05:09:38,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:38,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:38,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:09:38,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:38,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:38,869 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:09:38,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:09:38,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:38,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602714343] [2021-03-25 05:09:38,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:38,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:09:38,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511387949] [2021-03-25 05:09:38,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:09:38,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:38,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:09:38,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:09:38,884 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 114 [2021-03-25 05:09:38,884 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:38,884 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:38,884 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 114 [2021-03-25 05:09:38,884 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:38,932 INFO L129 PetriNetUnfolder]: 75/184 cut-off events. [2021-03-25 05:09:38,932 INFO L130 PetriNetUnfolder]: For 43/112 co-relation queries the response was YES. [2021-03-25 05:09:38,932 INFO L84 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 184 events. 75/184 cut-off events. For 43/112 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 831 event pairs, 8 based on Foata normal form. 6/187 useless extension candidates. Maximal degree in co-relation 548. Up to 78 conditions per place. [2021-03-25 05:09:38,934 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 12 selfloop transitions, 11 changer transitions 0/32 dead transitions. [2021-03-25 05:09:38,934 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 32 transitions, 186 flow [2021-03-25 05:09:38,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:09:38,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:09:38,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2021-03-25 05:09:38,936 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8245614035087719 [2021-03-25 05:09:38,936 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 376 transitions. [2021-03-25 05:09:38,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 376 transitions. [2021-03-25 05:09:38,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:38,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 376 transitions. [2021-03-25 05:09:38,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:38,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:38,939 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:38,939 INFO L185 Difference]: Start difference. First operand has 28 places, 23 transitions, 94 flow. Second operand 4 states and 376 transitions. [2021-03-25 05:09:38,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 32 transitions, 186 flow [2021-03-25 05:09:38,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 32 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 05:09:38,942 INFO L241 Difference]: Finished difference. Result has 32 places, 30 transitions, 164 flow [2021-03-25 05:09:38,942 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2021-03-25 05:09:38,943 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2021-03-25 05:09:38,943 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:38,943 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 30 transitions, 164 flow [2021-03-25 05:09:38,943 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 30 transitions, 164 flow [2021-03-25 05:09:38,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 30 transitions, 164 flow [2021-03-25 05:09:38,955 INFO L129 PetriNetUnfolder]: 75/184 cut-off events. [2021-03-25 05:09:38,956 INFO L130 PetriNetUnfolder]: For 120/145 co-relation queries the response was YES. [2021-03-25 05:09:38,956 INFO L84 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 184 events. 75/184 cut-off events. For 120/145 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 856 event pairs, 12 based on Foata normal form. 1/179 useless extension candidates. Maximal degree in co-relation 511. Up to 78 conditions per place. [2021-03-25 05:09:38,958 INFO L142 LiptonReduction]: Number of co-enabled transitions 176 [2021-03-25 05:09:38,960 INFO L154 LiptonReduction]: Checked pairs total: 80 [2021-03-25 05:09:38,961 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:38,961 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 18 [2021-03-25 05:09:38,961 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 164 flow [2021-03-25 05:09:38,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:38,961 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:38,962 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:38,962 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:09:38,962 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:38,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:38,962 INFO L82 PathProgramCache]: Analyzing trace with hash 893337386, now seen corresponding path program 1 times [2021-03-25 05:09:38,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:38,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550232595] [2021-03-25 05:09:38,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:38,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:38,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:38,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:38,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550232595] [2021-03-25 05:09:38,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:38,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 05:09:38,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317475279] [2021-03-25 05:09:38,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:09:38,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:38,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:09:38,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:09:38,999 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 114 [2021-03-25 05:09:38,999 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:38,999 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:38,999 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 114 [2021-03-25 05:09:38,999 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:39,016 INFO L129 PetriNetUnfolder]: 64/164 cut-off events. [2021-03-25 05:09:39,016 INFO L130 PetriNetUnfolder]: For 157/178 co-relation queries the response was YES. [2021-03-25 05:09:39,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 164 events. 64/164 cut-off events. For 157/178 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 720 event pairs, 9 based on Foata normal form. 3/164 useless extension candidates. Maximal degree in co-relation 502. Up to 72 conditions per place. [2021-03-25 05:09:39,017 INFO L132 encePairwiseOnDemand]: 110/114 looper letters, 7 selfloop transitions, 7 changer transitions 0/36 dead transitions. [2021-03-25 05:09:39,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 228 flow [2021-03-25 05:09:39,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:09:39,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:09:39,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2021-03-25 05:09:39,019 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8801169590643275 [2021-03-25 05:09:39,019 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2021-03-25 05:09:39,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2021-03-25 05:09:39,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:39,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2021-03-25 05:09:39,020 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 05:09:39,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,021 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,021 INFO L185 Difference]: Start difference. First operand has 32 places, 30 transitions, 164 flow. Second operand 3 states and 301 transitions. [2021-03-25 05:09:39,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 228 flow [2021-03-25 05:09:39,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 228 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 05:09:39,024 INFO L241 Difference]: Finished difference. Result has 35 places, 36 transitions, 235 flow [2021-03-25 05:09:39,025 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=35, PETRI_TRANSITIONS=36} [2021-03-25 05:09:39,025 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2021-03-25 05:09:39,025 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:39,025 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 36 transitions, 235 flow [2021-03-25 05:09:39,025 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 36 transitions, 235 flow [2021-03-25 05:09:39,026 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 36 transitions, 235 flow [2021-03-25 05:09:39,036 INFO L129 PetriNetUnfolder]: 64/164 cut-off events. [2021-03-25 05:09:39,036 INFO L130 PetriNetUnfolder]: For 163/190 co-relation queries the response was YES. [2021-03-25 05:09:39,037 INFO L84 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 164 events. 64/164 cut-off events. For 163/190 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 743 event pairs, 7 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 513. Up to 72 conditions per place. [2021-03-25 05:09:39,038 INFO L142 LiptonReduction]: Number of co-enabled transitions 194 [2021-03-25 05:09:39,042 INFO L154 LiptonReduction]: Checked pairs total: 112 [2021-03-25 05:09:39,042 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:39,042 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17 [2021-03-25 05:09:39,043 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 36 transitions, 235 flow [2021-03-25 05:09:39,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,043 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:39,043 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:39,043 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:09:39,043 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:39,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:39,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1771849024, now seen corresponding path program 1 times [2021-03-25 05:09:39,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:39,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686307713] [2021-03-25 05:09:39,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:39,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:39,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:39,092 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:09:39,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:09:39,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:39,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686307713] [2021-03-25 05:09:39,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:39,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:09:39,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162447653] [2021-03-25 05:09:39,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:09:39,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:39,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:09:39,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:09:39,103 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 114 [2021-03-25 05:09:39,104 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 36 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,104 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:39,104 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 114 [2021-03-25 05:09:39,104 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:39,139 INFO L129 PetriNetUnfolder]: 57/151 cut-off events. [2021-03-25 05:09:39,140 INFO L130 PetriNetUnfolder]: For 183/267 co-relation queries the response was YES. [2021-03-25 05:09:39,140 INFO L84 FinitePrefix]: Finished finitePrefix Result has 606 conditions, 151 events. 57/151 cut-off events. For 183/267 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 634 event pairs, 1 based on Foata normal form. 3/152 useless extension candidates. Maximal degree in co-relation 589. Up to 67 conditions per place. [2021-03-25 05:09:39,141 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 18 selfloop transitions, 19 changer transitions 0/46 dead transitions. [2021-03-25 05:09:39,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 380 flow [2021-03-25 05:09:39,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:09:39,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:09:39,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2021-03-25 05:09:39,144 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8245614035087719 [2021-03-25 05:09:39,144 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 376 transitions. [2021-03-25 05:09:39,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 376 transitions. [2021-03-25 05:09:39,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:39,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 376 transitions. [2021-03-25 05:09:39,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,147 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,147 INFO L185 Difference]: Start difference. First operand has 35 places, 36 transitions, 235 flow. Second operand 4 states and 376 transitions. [2021-03-25 05:09:39,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 380 flow [2021-03-25 05:09:39,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 46 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 05:09:39,153 INFO L241 Difference]: Finished difference. Result has 40 places, 44 transitions, 374 flow [2021-03-25 05:09:39,153 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=374, PETRI_PLACES=40, PETRI_TRANSITIONS=44} [2021-03-25 05:09:39,153 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2021-03-25 05:09:39,153 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:39,153 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 44 transitions, 374 flow [2021-03-25 05:09:39,154 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 44 transitions, 374 flow [2021-03-25 05:09:39,154 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 44 transitions, 374 flow [2021-03-25 05:09:39,169 INFO L129 PetriNetUnfolder]: 57/151 cut-off events. [2021-03-25 05:09:39,169 INFO L130 PetriNetUnfolder]: For 407/456 co-relation queries the response was YES. [2021-03-25 05:09:39,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 151 events. 57/151 cut-off events. For 407/456 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 651 event pairs, 4 based on Foata normal form. 2/151 useless extension candidates. Maximal degree in co-relation 612. Up to 67 conditions per place. [2021-03-25 05:09:39,173 INFO L142 LiptonReduction]: Number of co-enabled transitions 222 [2021-03-25 05:09:39,178 INFO L154 LiptonReduction]: Checked pairs total: 120 [2021-03-25 05:09:39,179 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:39,179 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 26 [2021-03-25 05:09:39,181 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 44 transitions, 374 flow [2021-03-25 05:09:39,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,182 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:39,182 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:39,182 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:09:39,182 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:39,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:39,182 INFO L82 PathProgramCache]: Analyzing trace with hash -410027142, now seen corresponding path program 1 times [2021-03-25 05:09:39,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:39,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868280064] [2021-03-25 05:09:39,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:39,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:39,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:09:39,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:39,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:39,242 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:09:39,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:09:39,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:39,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868280064] [2021-03-25 05:09:39,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:39,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:09:39,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529540228] [2021-03-25 05:09:39,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:09:39,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:39,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:09:39,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:09:39,257 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 114 [2021-03-25 05:09:39,257 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 44 transitions, 374 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:39,257 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 114 [2021-03-25 05:09:39,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:39,300 INFO L129 PetriNetUnfolder]: 54/162 cut-off events. [2021-03-25 05:09:39,301 INFO L130 PetriNetUnfolder]: For 423/506 co-relation queries the response was YES. [2021-03-25 05:09:39,301 INFO L84 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 162 events. 54/162 cut-off events. For 423/506 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 755 event pairs, 1 based on Foata normal form. 14/174 useless extension candidates. Maximal degree in co-relation 762. Up to 74 conditions per place. [2021-03-25 05:09:39,302 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 14 selfloop transitions, 23 changer transitions 3/49 dead transitions. [2021-03-25 05:09:39,302 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 49 transitions, 504 flow [2021-03-25 05:09:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:09:39,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:09:39,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2021-03-25 05:09:39,304 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8223684210526315 [2021-03-25 05:09:39,304 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2021-03-25 05:09:39,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2021-03-25 05:09:39,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:39,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2021-03-25 05:09:39,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,308 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,309 INFO L185 Difference]: Start difference. First operand has 40 places, 44 transitions, 374 flow. Second operand 4 states and 375 transitions. [2021-03-25 05:09:39,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 49 transitions, 504 flow [2021-03-25 05:09:39,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 49 transitions, 504 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 05:09:39,314 INFO L241 Difference]: Finished difference. Result has 46 places, 44 transitions, 480 flow [2021-03-25 05:09:39,314 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=480, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2021-03-25 05:09:39,315 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2021-03-25 05:09:39,315 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:39,315 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 44 transitions, 480 flow [2021-03-25 05:09:39,315 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 44 transitions, 480 flow [2021-03-25 05:09:39,316 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 44 transitions, 480 flow [2021-03-25 05:09:39,332 INFO L129 PetriNetUnfolder]: 51/156 cut-off events. [2021-03-25 05:09:39,332 INFO L130 PetriNetUnfolder]: For 693/761 co-relation queries the response was YES. [2021-03-25 05:09:39,332 INFO L84 FinitePrefix]: Finished finitePrefix Result has 781 conditions, 156 events. 51/156 cut-off events. For 693/761 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 754 event pairs, 3 based on Foata normal form. 3/157 useless extension candidates. Maximal degree in co-relation 757. Up to 70 conditions per place. [2021-03-25 05:09:39,334 INFO L142 LiptonReduction]: Number of co-enabled transitions 220 [2021-03-25 05:09:39,339 INFO L154 LiptonReduction]: Checked pairs total: 152 [2021-03-25 05:09:39,340 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:39,340 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 25 [2021-03-25 05:09:39,340 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 480 flow [2021-03-25 05:09:39,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,341 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:39,341 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:39,341 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 05:09:39,341 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:39,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:39,341 INFO L82 PathProgramCache]: Analyzing trace with hash -512179021, now seen corresponding path program 1 times [2021-03-25 05:09:39,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:39,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062764925] [2021-03-25 05:09:39,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:39,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:39,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:39,400 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 05:09:39,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 05:09:39,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:39,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062764925] [2021-03-25 05:09:39,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:39,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:09:39,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534747050] [2021-03-25 05:09:39,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:09:39,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:39,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:09:39,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:09:39,408 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 114 [2021-03-25 05:09:39,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 480 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,409 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:39,409 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 114 [2021-03-25 05:09:39,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:39,463 INFO L129 PetriNetUnfolder]: 125/328 cut-off events. [2021-03-25 05:09:39,464 INFO L130 PetriNetUnfolder]: For 1274/1418 co-relation queries the response was YES. [2021-03-25 05:09:39,465 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1208 conditions, 328 events. 125/328 cut-off events. For 1274/1418 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2040 event pairs, 27 based on Foata normal form. 38/351 useless extension candidates. Maximal degree in co-relation 1182. Up to 164 conditions per place. [2021-03-25 05:09:39,466 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 8 selfloop transitions, 8 changer transitions 0/54 dead transitions. [2021-03-25 05:09:39,466 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 54 transitions, 532 flow [2021-03-25 05:09:39,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:09:39,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:09:39,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2021-03-25 05:09:39,468 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7771929824561403 [2021-03-25 05:09:39,468 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 443 transitions. [2021-03-25 05:09:39,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 443 transitions. [2021-03-25 05:09:39,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:39,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 443 transitions. [2021-03-25 05:09:39,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,471 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,471 INFO L185 Difference]: Start difference. First operand has 46 places, 44 transitions, 480 flow. Second operand 5 states and 443 transitions. [2021-03-25 05:09:39,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 54 transitions, 532 flow [2021-03-25 05:09:39,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 54 transitions, 530 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-03-25 05:09:39,476 INFO L241 Difference]: Finished difference. Result has 53 places, 51 transitions, 538 flow [2021-03-25 05:09:39,476 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=538, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2021-03-25 05:09:39,477 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2021-03-25 05:09:39,477 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:39,477 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 51 transitions, 538 flow [2021-03-25 05:09:39,477 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 51 transitions, 538 flow [2021-03-25 05:09:39,478 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 51 transitions, 538 flow [2021-03-25 05:09:39,504 INFO L129 PetriNetUnfolder]: 125/328 cut-off events. [2021-03-25 05:09:39,504 INFO L130 PetriNetUnfolder]: For 1219/1313 co-relation queries the response was YES. [2021-03-25 05:09:39,506 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1391 conditions, 328 events. 125/328 cut-off events. For 1219/1313 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2085 event pairs, 28 based on Foata normal form. 18/325 useless extension candidates. Maximal degree in co-relation 1362. Up to 183 conditions per place. [2021-03-25 05:09:39,509 INFO L142 LiptonReduction]: Number of co-enabled transitions 384 [2021-03-25 05:09:39,519 INFO L154 LiptonReduction]: Checked pairs total: 33 [2021-03-25 05:09:39,520 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:09:39,520 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 43 [2021-03-25 05:09:39,522 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 532 flow [2021-03-25 05:09:39,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,522 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:39,522 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:39,522 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 05:09:39,522 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:39,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:39,523 INFO L82 PathProgramCache]: Analyzing trace with hash -49299819, now seen corresponding path program 1 times [2021-03-25 05:09:39,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:39,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090764184] [2021-03-25 05:09:39,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:39,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:39,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:09:39,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:39,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:39,572 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:09:39,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:09:39,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:39,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090764184] [2021-03-25 05:09:39,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:39,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:09:39,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588049763] [2021-03-25 05:09:39,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:09:39,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:39,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:09:39,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:09:39,583 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 114 [2021-03-25 05:09:39,584 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 532 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,584 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:39,584 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 114 [2021-03-25 05:09:39,584 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:39,636 INFO L129 PetriNetUnfolder]: 135/340 cut-off events. [2021-03-25 05:09:39,636 INFO L130 PetriNetUnfolder]: For 1370/1547 co-relation queries the response was YES. [2021-03-25 05:09:39,638 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1545 conditions, 340 events. 135/340 cut-off events. For 1370/1547 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 1991 event pairs, 41 based on Foata normal form. 38/358 useless extension candidates. Maximal degree in co-relation 1514. Up to 215 conditions per place. [2021-03-25 05:09:39,639 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 14 selfloop transitions, 23 changer transitions 3/52 dead transitions. [2021-03-25 05:09:39,639 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 662 flow [2021-03-25 05:09:39,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:09:39,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:09:39,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2021-03-25 05:09:39,640 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8223684210526315 [2021-03-25 05:09:39,640 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2021-03-25 05:09:39,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2021-03-25 05:09:39,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:39,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2021-03-25 05:09:39,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,643 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,643 INFO L185 Difference]: Start difference. First operand has 53 places, 50 transitions, 532 flow. Second operand 4 states and 375 transitions. [2021-03-25 05:09:39,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 662 flow [2021-03-25 05:09:39,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 52 transitions, 656 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 05:09:39,669 INFO L241 Difference]: Finished difference. Result has 55 places, 47 transitions, 620 flow [2021-03-25 05:09:39,670 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=620, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2021-03-25 05:09:39,670 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2021-03-25 05:09:39,670 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:39,670 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 47 transitions, 620 flow [2021-03-25 05:09:39,670 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 47 transitions, 620 flow [2021-03-25 05:09:39,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 47 transitions, 620 flow [2021-03-25 05:09:39,700 INFO L129 PetriNetUnfolder]: 131/336 cut-off events. [2021-03-25 05:09:39,700 INFO L130 PetriNetUnfolder]: For 1586/1666 co-relation queries the response was YES. [2021-03-25 05:09:39,701 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 336 events. 131/336 cut-off events. For 1586/1666 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2049 event pairs, 41 based on Foata normal form. 3/319 useless extension candidates. Maximal degree in co-relation 1474. Up to 215 conditions per place. [2021-03-25 05:09:39,705 INFO L142 LiptonReduction]: Number of co-enabled transitions 242 [2021-03-25 05:09:39,709 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:09:39,709 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:39,709 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 39 [2021-03-25 05:09:39,710 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 620 flow [2021-03-25 05:09:39,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,710 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:39,710 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:39,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 05:09:39,711 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:39,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:39,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1137926189, now seen corresponding path program 1 times [2021-03-25 05:09:39,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:39,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637176865] [2021-03-25 05:09:39,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:39,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:39,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:09:39,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:39,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:39,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:39,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637176865] [2021-03-25 05:09:39,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:39,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:09:39,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49938385] [2021-03-25 05:09:39,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:09:39,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:39,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:09:39,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:09:39,761 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 114 [2021-03-25 05:09:39,762 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 620 flow. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,762 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:39,762 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 114 [2021-03-25 05:09:39,762 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:39,810 INFO L129 PetriNetUnfolder]: 168/418 cut-off events. [2021-03-25 05:09:39,811 INFO L130 PetriNetUnfolder]: For 1778/1838 co-relation queries the response was YES. [2021-03-25 05:09:39,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1776 conditions, 418 events. 168/418 cut-off events. For 1778/1838 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 2703 event pairs, 61 based on Foata normal form. 10/397 useless extension candidates. Maximal degree in co-relation 1742. Up to 297 conditions per place. [2021-03-25 05:09:39,814 INFO L132 encePairwiseOnDemand]: 111/114 looper letters, 5 selfloop transitions, 7 changer transitions 5/47 dead transitions. [2021-03-25 05:09:39,814 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 47 transitions, 650 flow [2021-03-25 05:09:39,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:09:39,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:09:39,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2021-03-25 05:09:39,815 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8771929824561403 [2021-03-25 05:09:39,815 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2021-03-25 05:09:39,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2021-03-25 05:09:39,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:39,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2021-03-25 05:09:39,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,818 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,818 INFO L185 Difference]: Start difference. First operand has 55 places, 47 transitions, 620 flow. Second operand 3 states and 300 transitions. [2021-03-25 05:09:39,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 47 transitions, 650 flow [2021-03-25 05:09:39,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 47 transitions, 630 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-25 05:09:39,825 INFO L241 Difference]: Finished difference. Result has 57 places, 42 transitions, 536 flow [2021-03-25 05:09:39,826 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=536, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2021-03-25 05:09:39,826 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2021-03-25 05:09:39,826 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:39,826 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 42 transitions, 536 flow [2021-03-25 05:09:39,826 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 42 transitions, 536 flow [2021-03-25 05:09:39,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 42 transitions, 536 flow [2021-03-25 05:09:39,862 INFO L129 PetriNetUnfolder]: 161/406 cut-off events. [2021-03-25 05:09:39,863 INFO L130 PetriNetUnfolder]: For 1629/1719 co-relation queries the response was YES. [2021-03-25 05:09:39,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1649 conditions, 406 events. 161/406 cut-off events. For 1629/1719 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 2619 event pairs, 61 based on Foata normal form. 3/383 useless extension candidates. Maximal degree in co-relation 1616. Up to 295 conditions per place. [2021-03-25 05:09:39,868 INFO L142 LiptonReduction]: Number of co-enabled transitions 210 [2021-03-25 05:09:39,874 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:09:39,874 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:39,874 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 48 [2021-03-25 05:09:39,878 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 536 flow [2021-03-25 05:09:39,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,880 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:39,880 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:39,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 05:09:39,880 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:39,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:39,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1118444405, now seen corresponding path program 1 times [2021-03-25 05:09:39,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:39,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894908184] [2021-03-25 05:09:39,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:39,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:39,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:39,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:39,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:39,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:39,934 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 05:09:39,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 05:09:39,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:39,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894908184] [2021-03-25 05:09:39,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:39,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:09:39,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473455149] [2021-03-25 05:09:39,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:09:39,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:39,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:09:39,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:09:39,944 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 114 [2021-03-25 05:09:39,945 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 536 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:39,945 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:39,945 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 114 [2021-03-25 05:09:39,945 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:40,020 INFO L129 PetriNetUnfolder]: 128/368 cut-off events. [2021-03-25 05:09:40,020 INFO L130 PetriNetUnfolder]: For 1546/1802 co-relation queries the response was YES. [2021-03-25 05:09:40,022 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 368 events. 128/368 cut-off events. For 1546/1802 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 2493 event pairs, 9 based on Foata normal form. 84/441 useless extension candidates. Maximal degree in co-relation 1642. Up to 283 conditions per place. [2021-03-25 05:09:40,022 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 5 selfloop transitions, 7 changer transitions 19/52 dead transitions. [2021-03-25 05:09:40,022 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 52 transitions, 632 flow [2021-03-25 05:09:40,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 05:09:40,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 05:09:40,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 531 transitions. [2021-03-25 05:09:40,024 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7763157894736842 [2021-03-25 05:09:40,025 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 531 transitions. [2021-03-25 05:09:40,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 531 transitions. [2021-03-25 05:09:40,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:40,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 531 transitions. [2021-03-25 05:09:40,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:40,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:40,027 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:40,027 INFO L185 Difference]: Start difference. First operand has 57 places, 42 transitions, 536 flow. Second operand 6 states and 531 transitions. [2021-03-25 05:09:40,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 52 transitions, 632 flow [2021-03-25 05:09:40,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 52 transitions, 562 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-03-25 05:09:40,034 INFO L241 Difference]: Finished difference. Result has 61 places, 33 transitions, 408 flow [2021-03-25 05:09:40,035 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=408, PETRI_PLACES=61, PETRI_TRANSITIONS=33} [2021-03-25 05:09:40,035 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2021-03-25 05:09:40,035 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:40,035 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 33 transitions, 408 flow [2021-03-25 05:09:40,035 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 33 transitions, 408 flow [2021-03-25 05:09:40,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 33 transitions, 408 flow [2021-03-25 05:09:40,044 INFO L129 PetriNetUnfolder]: 24/90 cut-off events. [2021-03-25 05:09:40,044 INFO L130 PetriNetUnfolder]: For 444/500 co-relation queries the response was YES. [2021-03-25 05:09:40,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 507 conditions, 90 events. 24/90 cut-off events. For 444/500 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 336 event pairs, 3 based on Foata normal form. 5/92 useless extension candidates. Maximal degree in co-relation 473. Up to 61 conditions per place. [2021-03-25 05:09:40,045 INFO L142 LiptonReduction]: Number of co-enabled transitions 118 [2021-03-25 05:09:40,123 INFO L154 LiptonReduction]: Checked pairs total: 6 [2021-03-25 05:09:40,123 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:09:40,123 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 88 [2021-03-25 05:09:40,123 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 32 transitions, 406 flow [2021-03-25 05:09:40,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:40,124 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:40,124 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:40,124 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 05:09:40,124 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:40,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:40,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1717026320, now seen corresponding path program 1 times [2021-03-25 05:09:40,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:40,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595023989] [2021-03-25 05:09:40,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:40,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:40,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:40,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:40,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:40,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:40,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:40,171 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 05:09:40,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 05:09:40,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:40,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595023989] [2021-03-25 05:09:40,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:40,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:09:40,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946927353] [2021-03-25 05:09:40,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:09:40,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:40,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:09:40,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:09:40,180 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 115 [2021-03-25 05:09:40,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 32 transitions, 406 flow. Second operand has 6 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:40,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:40,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 115 [2021-03-25 05:09:40,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:40,209 INFO L129 PetriNetUnfolder]: 15/60 cut-off events. [2021-03-25 05:09:40,209 INFO L130 PetriNetUnfolder]: For 510/675 co-relation queries the response was YES. [2021-03-25 05:09:40,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 60 events. 15/60 cut-off events. For 510/675 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 181 event pairs, 0 based on Foata normal form. 41/98 useless extension candidates. Maximal degree in co-relation 369. Up to 37 conditions per place. [2021-03-25 05:09:40,209 INFO L132 encePairwiseOnDemand]: 110/115 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2021-03-25 05:09:40,209 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 31 transitions, 400 flow [2021-03-25 05:09:40,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:09:40,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:09:40,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 436 transitions. [2021-03-25 05:09:40,211 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7582608695652174 [2021-03-25 05:09:40,211 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 436 transitions. [2021-03-25 05:09:40,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 436 transitions. [2021-03-25 05:09:40,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:40,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 436 transitions. [2021-03-25 05:09:40,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.2) internal successors, (436), 5 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:40,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:40,213 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:40,213 INFO L185 Difference]: Start difference. First operand has 58 places, 32 transitions, 406 flow. Second operand 5 states and 436 transitions. [2021-03-25 05:09:40,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 31 transitions, 400 flow [2021-03-25 05:09:40,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 31 transitions, 280 flow, removed 12 selfloop flow, removed 13 redundant places. [2021-03-25 05:09:40,216 INFO L241 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2021-03-25 05:09:40,217 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2021-03-25 05:09:40,217 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 18 predicate places. [2021-03-25 05:09:40,217 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:40,217 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 0 transitions, 0 flow [2021-03-25 05:09:40,217 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 0 transitions, 0 flow [2021-03-25 05:09:40,217 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 05:09:40,217 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 05:09:40,217 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:09:40,218 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 05:09:40,218 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 05:09:40,218 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:09:40,218 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:40,218 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 05:09:40,219 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 05:09:40,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:40,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 05:09:40,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:09:40 BasicIcfg [2021-03-25 05:09:40,222 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:09:40,223 INFO L168 Benchmark]: Toolchain (without parser) took 5037.11 ms. Allocated memory was 255.9 MB in the beginning and 396.4 MB in the end (delta: 140.5 MB). Free memory was 233.5 MB in the beginning and 235.2 MB in the end (delta: -1.7 MB). Peak memory consumption was 138.4 MB. Max. memory is 16.0 GB. [2021-03-25 05:09:40,223 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 255.9 MB. Free memory was 237.7 MB in the beginning and 237.5 MB in the end (delta: 168.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:09:40,224 INFO L168 Benchmark]: CACSL2BoogieTranslator took 475.56 ms. Allocated memory was 255.9 MB in the beginning and 329.3 MB in the end (delta: 73.4 MB). Free memory was 232.9 MB in the beginning and 291.7 MB in the end (delta: -58.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-25 05:09:40,224 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.70 ms. Allocated memory is still 329.3 MB. Free memory was 291.7 MB in the beginning and 289.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:09:40,224 INFO L168 Benchmark]: Boogie Preprocessor took 18.13 ms. Allocated memory is still 329.3 MB. Free memory was 289.9 MB in the beginning and 288.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:09:40,224 INFO L168 Benchmark]: RCFGBuilder took 385.43 ms. Allocated memory is still 329.3 MB. Free memory was 288.2 MB in the beginning and 307.2 MB in the end (delta: -18.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.0 GB. [2021-03-25 05:09:40,225 INFO L168 Benchmark]: TraceAbstraction took 4100.19 ms. Allocated memory was 329.3 MB in the beginning and 396.4 MB in the end (delta: 67.1 MB). Free memory was 305.9 MB in the beginning and 235.2 MB in the end (delta: 70.7 MB). Peak memory consumption was 137.6 MB. Max. memory is 16.0 GB. [2021-03-25 05:09:40,229 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 255.9 MB. Free memory was 237.7 MB in the beginning and 237.5 MB in the end (delta: 168.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 475.56 ms. Allocated memory was 255.9 MB in the beginning and 329.3 MB in the end (delta: 73.4 MB). Free memory was 232.9 MB in the beginning and 291.7 MB in the end (delta: -58.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 50.70 ms. Allocated memory is still 329.3 MB. Free memory was 291.7 MB in the beginning and 289.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.13 ms. Allocated memory is still 329.3 MB. Free memory was 289.9 MB in the beginning and 288.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 385.43 ms. Allocated memory is still 329.3 MB. Free memory was 288.2 MB in the beginning and 307.2 MB in the end (delta: -18.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4100.19 ms. Allocated memory was 329.3 MB in the beginning and 396.4 MB in the end (delta: 67.1 MB). Free memory was 305.9 MB in the beginning and 235.2 MB in the end (delta: 70.7 MB). Peak memory consumption was 137.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1212.5ms, 67 PlacesBefore, 30 PlacesAfterwards, 58 TransitionsBefore, 20 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 4 FixpointIterations, 14 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 38 TotalNumberOfCompositions, 1207 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 647, positive: 605, positive conditional: 0, positive unconditional: 605, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 431, positive: 410, positive conditional: 0, positive unconditional: 410, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 431, positive: 410, positive conditional: 0, positive unconditional: 410, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 647, positive: 195, positive conditional: 0, positive unconditional: 195, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 431, unknown conditional: 0, unknown unconditional: 431] , 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: 847.5ms, 31 PlacesBefore, 28 PlacesAfterwards, 26 TransitionsBefore, 23 TransitionsAfterwards, 172 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 204 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 114, positive: 101, positive conditional: 0, positive unconditional: 101, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 26, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 26, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 114, positive: 80, positive conditional: 0, positive unconditional: 80, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 26, unknown conditional: 0, unknown unconditional: 26] , Statistics on independence cache: Total cache size (in pairs): 53, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17.3ms, 32 PlacesBefore, 32 PlacesAfterwards, 30 TransitionsBefore, 30 TransitionsAfterwards, 176 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 80 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 44, positive: 39, positive conditional: 0, positive unconditional: 39, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 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: 44, positive: 39, positive conditional: 0, positive unconditional: 39, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 53, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16.7ms, 35 PlacesBefore, 35 PlacesAfterwards, 36 TransitionsBefore, 36 TransitionsAfterwards, 194 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 112 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 43, positive: 36, positive conditional: 0, positive unconditional: 36, 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: 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: 43, positive: 36, positive conditional: 0, positive unconditional: 36, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 53, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 24.7ms, 40 PlacesBefore, 40 PlacesAfterwards, 44 TransitionsBefore, 44 TransitionsAfterwards, 222 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 120 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 47, positive: 40, positive conditional: 0, positive unconditional: 40, 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: 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: 47, positive: 40, positive conditional: 0, positive unconditional: 40, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 53, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 24.5ms, 46 PlacesBefore, 46 PlacesAfterwards, 44 TransitionsBefore, 44 TransitionsAfterwards, 220 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 152 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 81, positive: 72, positive conditional: 0, positive unconditional: 72, 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: 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: 81, positive: 72, positive conditional: 0, positive unconditional: 72, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 53, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 42.5ms, 53 PlacesBefore, 53 PlacesAfterwards, 51 TransitionsBefore, 50 TransitionsAfterwards, 384 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 33 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 33, positive: 33, positive conditional: 0, positive unconditional: 33, 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: 33, positive: 33, positive conditional: 0, positive unconditional: 33, 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): 46, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 38.9ms, 55 PlacesBefore, 55 PlacesAfterwards, 47 TransitionsBefore, 47 TransitionsAfterwards, 242 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): 46, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 47.5ms, 57 PlacesBefore, 57 PlacesAfterwards, 42 TransitionsBefore, 42 TransitionsAfterwards, 210 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): 46, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 87.7ms, 61 PlacesBefore, 58 PlacesAfterwards, 33 TransitionsBefore, 32 TransitionsAfterwards, 118 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 6 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, 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: 6, positive: 6, positive conditional: 0, positive unconditional: 6, 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: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.6ms, 48 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: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - 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, 72 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 9.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4009.8ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 692.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1277.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 72 SDtfs, 20 SDslu, 33 SDs, 0 SdLazy, 107 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 100.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 97.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=620occurred in iteration=7, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 24.9ms SsaConstructionTime, 183.7ms SatisfiabilityAnalysisTime, 475.1ms InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 562 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...