/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/safe008_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:00:42,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:00:42,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:00:42,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:00:42,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:00:42,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:00:42,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:00:42,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:00:42,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:00:42,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:00:42,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:00:42,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:00:42,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:00:42,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:00:42,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:00:42,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:00:42,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:00:42,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:00:42,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:00:42,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:00:42,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:00:42,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:00:42,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:00:42,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:00:42,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 05:00:42,929 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 05:00:42,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 05:00:42,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 05:00:42,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 05:00:42,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 05:00:42,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 05:00:42,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 05:00:42,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 05:00:42,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 05:00:42,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 05:00:42,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 05:00:42,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 05:00:42,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 05:00:42,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:00:42,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:00:42,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:00:42,937 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 05:00:42,958 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:00:42,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:00:42,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:00:42,961 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:00:42,961 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:00:42,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:00:42,961 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:00:42,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:00:42,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:00:42,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:00:42,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:00:42,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:00:42,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:00:42,962 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:00:42,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:00:42,963 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:00:42,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:00:42,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:00:42,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:00:42,963 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:00:42,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:00:42,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:00:42,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:00:42,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:00:42,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:00:42,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:00:42,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:00:42,964 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:00:42,964 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:00:42,964 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:00:42,964 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:00:43,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:00:43,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:00:43,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:00:43,265 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:00:43,266 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:00:43,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i [2021-03-25 05:00:43,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f2629427/63c50f6b2d88463590161d0b18d0cefa/FLAG7a653951a [2021-03-25 05:00:43,706 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:00:43,707 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i [2021-03-25 05:00:43,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f2629427/63c50f6b2d88463590161d0b18d0cefa/FLAG7a653951a [2021-03-25 05:00:44,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f2629427/63c50f6b2d88463590161d0b18d0cefa [2021-03-25 05:00:44,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:00:44,051 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:00:44,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:00:44,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:00:44,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:00:44,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:00:44" (1/1) ... [2021-03-25 05:00:44,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b28cd8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:44, skipping insertion in model container [2021-03-25 05:00:44,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:00:44" (1/1) ... [2021-03-25 05:00:44,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:00:44,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:00:44,182 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/safe008_tso.opt.i[949,962] [2021-03-25 05:00:44,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:00:44,354 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:00:44,363 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/safe008_tso.opt.i[949,962] [2021-03-25 05:00:44,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:00:44,441 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:00:44,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:44 WrapperNode [2021-03-25 05:00:44,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:00:44,444 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:00:44,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:00:44,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:00:44,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:44" (1/1) ... [2021-03-25 05:00:44,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:44" (1/1) ... [2021-03-25 05:00:44,485 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:00:44,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:00:44,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:00:44,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:00:44,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:44" (1/1) ... [2021-03-25 05:00:44,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:44" (1/1) ... [2021-03-25 05:00:44,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:44" (1/1) ... [2021-03-25 05:00:44,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:44" (1/1) ... [2021-03-25 05:00:44,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:44" (1/1) ... [2021-03-25 05:00:44,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:44" (1/1) ... [2021-03-25 05:00:44,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:44" (1/1) ... [2021-03-25 05:00:44,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:00:44,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:00:44,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:00:44,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:00:44,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:44" (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 05:00:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:00:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:00:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:00:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:00:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 05:00:44,644 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 05:00:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 05:00:44,645 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 05:00:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 05:00:44,645 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 05:00:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:00:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:00:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:00:44,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:00:44,646 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 05:00:44,891 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:00:44,892 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 05:00:44,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:00:44 BoogieIcfgContainer [2021-03-25 05:00:44,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:00:44,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:00:44,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:00:44,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:00:44,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:00:44" (1/3) ... [2021-03-25 05:00:44,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c5c93b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:00:44, skipping insertion in model container [2021-03-25 05:00:44,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:44" (2/3) ... [2021-03-25 05:00:44,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c5c93b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:00:44, skipping insertion in model container [2021-03-25 05:00:44,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:00:44" (3/3) ... [2021-03-25 05:00:44,898 INFO L111 eAbstractionObserver]: Analyzing ICFG safe008_tso.opt.i [2021-03-25 05:00:44,901 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:00:44,904 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 05:00:44,904 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:00:44,923 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,924 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,924 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,924 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,924 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,924 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,924 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,924 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,925 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,925 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,925 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,925 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,925 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,925 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,925 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,925 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,925 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,926 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,926 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,926 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,926 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,926 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,926 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,926 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,926 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,927 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,927 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,927 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,927 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,927 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,927 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,927 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,927 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,927 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,928 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,928 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,929 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,929 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,929 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,929 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,933 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,933 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,933 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,933 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,934 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,935 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,935 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,935 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:44,936 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:00:44,948 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 05:00:44,961 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:00:44,961 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:00:44,961 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:00:44,961 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:00:44,961 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:00:44,961 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:00:44,961 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:00:44,961 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:00:44,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-25 05:00:44,992 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-25 05:00:44,992 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:00:44,995 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-25 05:00:44,995 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-25 05:00:44,997 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-25 05:00:44,998 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:45,004 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-25 05:00:45,006 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-25 05:00:45,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-25 05:00:45,018 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-25 05:00:45,018 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:00:45,019 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-25 05:00:45,020 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-25 05:00:46,282 INFO L154 LiptonReduction]: Checked pairs total: 1328 [2021-03-25 05:00:46,282 INFO L156 LiptonReduction]: Total number of compositions: 41 [2021-03-25 05:00:46,284 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1286 [2021-03-25 05:00:46,290 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-25 05:00:46,290 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:00:46,290 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:00:46,290 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:00:46,290 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:00:46,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:00:46,294 INFO L82 PathProgramCache]: Analyzing trace with hash 775848287, now seen corresponding path program 1 times [2021-03-25 05:00:46,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:00:46,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349512479] [2021-03-25 05:00:46,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:00:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:00:46,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:46,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:46,444 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:00:46,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:00:46,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:46,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:46,460 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 05:00:46,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349512479] [2021-03-25 05:00:46,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:00:46,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:00:46,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877664454] [2021-03-25 05:00:46,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:00:46,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:00:46,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:00:46,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:00:46,476 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 116 [2021-03-25 05:00:46,478 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:00:46,478 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:00:46,478 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 116 [2021-03-25 05:00:46,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:00:46,539 INFO L129 PetriNetUnfolder]: 47/138 cut-off events. [2021-03-25 05:00:46,539 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:00:46,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 138 events. 47/138 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 574 event pairs, 7 based on Foata normal form. 15/146 useless extension candidates. Maximal degree in co-relation 235. Up to 49 conditions per place. [2021-03-25 05:00:46,541 INFO L132 encePairwiseOnDemand]: 109/116 looper letters, 8 selfloop transitions, 5 changer transitions 10/36 dead transitions. [2021-03-25 05:00:46,541 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 36 transitions, 127 flow [2021-03-25 05:00:46,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:00:46,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:00:46,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 635 transitions. [2021-03-25 05:00:46,552 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7820197044334976 [2021-03-25 05:00:46,552 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 635 transitions. [2021-03-25 05:00:46,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 635 transitions. [2021-03-25 05:00:46,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:00:46,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 635 transitions. [2021-03-25 05:00:46,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.71428571428571) internal successors, (635), 7 states have internal predecessors, (635), 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 05:00:46,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:00:46,564 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:00:46,566 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 7 states and 635 transitions. [2021-03-25 05:00:46,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 36 transitions, 127 flow [2021-03-25 05:00:46,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 124 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 05:00:46,569 INFO L241 Difference]: Finished difference. Result has 39 places, 23 transitions, 85 flow [2021-03-25 05:00:46,570 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=85, PETRI_PLACES=39, PETRI_TRANSITIONS=23} [2021-03-25 05:00:46,570 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2021-03-25 05:00:46,570 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:46,570 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 23 transitions, 85 flow [2021-03-25 05:00:46,571 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 23 transitions, 85 flow [2021-03-25 05:00:46,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 23 transitions, 85 flow [2021-03-25 05:00:46,578 INFO L129 PetriNetUnfolder]: 19/90 cut-off events. [2021-03-25 05:00:46,579 INFO L130 PetriNetUnfolder]: For 38/40 co-relation queries the response was YES. [2021-03-25 05:00:46,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 90 events. 19/90 cut-off events. For 38/40 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 384 event pairs, 14 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 177. Up to 34 conditions per place. [2021-03-25 05:00:46,580 INFO L142 LiptonReduction]: Number of co-enabled transitions 144 [2021-03-25 05:00:46,774 INFO L154 LiptonReduction]: Checked pairs total: 222 [2021-03-25 05:00:46,775 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:00:46,775 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 205 [2021-03-25 05:00:46,775 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 21 transitions, 81 flow [2021-03-25 05:00:46,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:00:46,776 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:00:46,776 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:00:46,776 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:00:46,776 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:00:46,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:00:46,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1718526481, now seen corresponding path program 1 times [2021-03-25 05:00:46,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:00:46,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435251062] [2021-03-25 05:00:46,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:00:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:00:46,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:46,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:00:46,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:46,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:46,864 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:00:46,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:00:46,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:46,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:46,878 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 05:00:46,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435251062] [2021-03-25 05:00:46,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:00:46,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:00:46,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241214001] [2021-03-25 05:00:46,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:00:46,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:00:46,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:00:46,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:00:46,881 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 118 [2021-03-25 05:00:46,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 21 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 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 05:00:46,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:00:46,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 118 [2021-03-25 05:00:46,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:00:46,941 INFO L129 PetriNetUnfolder]: 23/110 cut-off events. [2021-03-25 05:00:46,941 INFO L130 PetriNetUnfolder]: For 146/169 co-relation queries the response was YES. [2021-03-25 05:00:46,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 110 events. 23/110 cut-off events. For 146/169 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 514 event pairs, 6 based on Foata normal form. 12/120 useless extension candidates. Maximal degree in co-relation 292. Up to 40 conditions per place. [2021-03-25 05:00:46,942 INFO L132 encePairwiseOnDemand]: 112/118 looper letters, 8 selfloop transitions, 6 changer transitions 9/35 dead transitions. [2021-03-25 05:00:46,942 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 35 transitions, 207 flow [2021-03-25 05:00:46,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:00:46,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:00:46,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 635 transitions. [2021-03-25 05:00:46,958 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7687651331719129 [2021-03-25 05:00:46,958 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 635 transitions. [2021-03-25 05:00:46,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 635 transitions. [2021-03-25 05:00:46,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:00:46,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 635 transitions. [2021-03-25 05:00:46,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.71428571428571) internal successors, (635), 7 states have internal predecessors, (635), 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 05:00:46,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 118.0) internal successors, (944), 8 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:00:46,962 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 118.0) internal successors, (944), 8 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:00:46,962 INFO L185 Difference]: Start difference. First operand has 34 places, 21 transitions, 81 flow. Second operand 7 states and 635 transitions. [2021-03-25 05:00:46,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 35 transitions, 207 flow [2021-03-25 05:00:46,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 185 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-03-25 05:00:46,964 INFO L241 Difference]: Finished difference. Result has 40 places, 23 transitions, 107 flow [2021-03-25 05:00:46,964 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=107, PETRI_PLACES=40, PETRI_TRANSITIONS=23} [2021-03-25 05:00:46,964 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2021-03-25 05:00:46,965 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:46,965 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 23 transitions, 107 flow [2021-03-25 05:00:46,965 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 23 transitions, 107 flow [2021-03-25 05:00:46,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 23 transitions, 107 flow [2021-03-25 05:00:46,969 INFO L129 PetriNetUnfolder]: 10/63 cut-off events. [2021-03-25 05:00:46,969 INFO L130 PetriNetUnfolder]: For 70/86 co-relation queries the response was YES. [2021-03-25 05:00:46,970 INFO L84 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 63 events. 10/63 cut-off events. For 70/86 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 231 event pairs, 4 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 154. Up to 23 conditions per place. [2021-03-25 05:00:46,971 INFO L142 LiptonReduction]: Number of co-enabled transitions 154 [2021-03-25 05:00:47,120 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-25 05:00:47,311 INFO L154 LiptonReduction]: Checked pairs total: 198 [2021-03-25 05:00:47,311 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:00:47,311 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 346 [2021-03-25 05:00:47,312 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 22 transitions, 105 flow [2021-03-25 05:00:47,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 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 05:00:47,312 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:00:47,312 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:00:47,313 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:00:47,313 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:00:47,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:00:47,313 INFO L82 PathProgramCache]: Analyzing trace with hash -894910227, now seen corresponding path program 1 times [2021-03-25 05:00:47,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:00:47,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151858523] [2021-03-25 05:00:47,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:00:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:00:47,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:47,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:47,362 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:00:47,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:00:47,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:47,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:47,370 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 05:00:47,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151858523] [2021-03-25 05:00:47,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:00:47,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:00:47,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045639998] [2021-03-25 05:00:47,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:00:47,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:00:47,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:00:47,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:00:47,382 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 119 [2021-03-25 05:00:47,383 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 22 transitions, 105 flow. Second operand has 5 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 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 05:00:47,383 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:00:47,383 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 119 [2021-03-25 05:00:47,383 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:00:47,425 INFO L129 PetriNetUnfolder]: 12/73 cut-off events. [2021-03-25 05:00:47,426 INFO L130 PetriNetUnfolder]: For 141/145 co-relation queries the response was YES. [2021-03-25 05:00:47,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 73 events. 12/73 cut-off events. For 141/145 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 275 event pairs, 1 based on Foata normal form. 6/76 useless extension candidates. Maximal degree in co-relation 220. Up to 25 conditions per place. [2021-03-25 05:00:47,427 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 11 selfloop transitions, 6 changer transitions 5/33 dead transitions. [2021-03-25 05:00:47,427 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 33 transitions, 222 flow [2021-03-25 05:00:47,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:00:47,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:00:47,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 628 transitions. [2021-03-25 05:00:47,428 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7539015606242497 [2021-03-25 05:00:47,428 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 628 transitions. [2021-03-25 05:00:47,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 628 transitions. [2021-03-25 05:00:47,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:00:47,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 628 transitions. [2021-03-25 05:00:47,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.71428571428571) internal successors, (628), 7 states have internal predecessors, (628), 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 05:00:47,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:00:47,432 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:00:47,432 INFO L185 Difference]: Start difference. First operand has 36 places, 22 transitions, 105 flow. Second operand 7 states and 628 transitions. [2021-03-25 05:00:47,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 33 transitions, 222 flow [2021-03-25 05:00:47,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 33 transitions, 198 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-03-25 05:00:47,448 INFO L241 Difference]: Finished difference. Result has 44 places, 25 transitions, 149 flow [2021-03-25 05:00:47,449 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=149, PETRI_PLACES=44, PETRI_TRANSITIONS=25} [2021-03-25 05:00:47,449 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2021-03-25 05:00:47,449 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:47,449 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 25 transitions, 149 flow [2021-03-25 05:00:47,449 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 25 transitions, 149 flow [2021-03-25 05:00:47,449 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 25 transitions, 149 flow [2021-03-25 05:00:47,453 INFO L129 PetriNetUnfolder]: 6/48 cut-off events. [2021-03-25 05:00:47,453 INFO L130 PetriNetUnfolder]: For 99/121 co-relation queries the response was YES. [2021-03-25 05:00:47,453 INFO L84 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 48 events. 6/48 cut-off events. For 99/121 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 155 event pairs, 1 based on Foata normal form. 1/48 useless extension candidates. Maximal degree in co-relation 135. Up to 16 conditions per place. [2021-03-25 05:00:47,454 INFO L142 LiptonReduction]: Number of co-enabled transitions 164 [2021-03-25 05:00:47,455 INFO L154 LiptonReduction]: Checked pairs total: 172 [2021-03-25 05:00:47,455 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:00:47,455 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-25 05:00:47,456 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 25 transitions, 149 flow [2021-03-25 05:00:47,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 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 05:00:47,456 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:00:47,456 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:00:47,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:00:47,457 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:00:47,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:00:47,457 INFO L82 PathProgramCache]: Analyzing trace with hash 845867162, now seen corresponding path program 1 times [2021-03-25 05:00:47,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:00:47,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144695275] [2021-03-25 05:00:47,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:00:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:00:47,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:47,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:47,515 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:00:47,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:00:47,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:47,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:47,525 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 05:00:47,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144695275] [2021-03-25 05:00:47,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:00:47,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:00:47,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309990776] [2021-03-25 05:00:47,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:00:47,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:00:47,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:00:47,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:00:47,527 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2021-03-25 05:00:47,528 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 25 transitions, 149 flow. Second operand has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 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 05:00:47,528 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:00:47,528 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2021-03-25 05:00:47,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:00:47,579 INFO L129 PetriNetUnfolder]: 37/119 cut-off events. [2021-03-25 05:00:47,580 INFO L130 PetriNetUnfolder]: For 368/372 co-relation queries the response was YES. [2021-03-25 05:00:47,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 444 conditions, 119 events. 37/119 cut-off events. For 368/372 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 471 event pairs, 0 based on Foata normal form. 4/121 useless extension candidates. Maximal degree in co-relation 423. Up to 34 conditions per place. [2021-03-25 05:00:47,581 INFO L132 encePairwiseOnDemand]: 111/119 looper letters, 17 selfloop transitions, 16 changer transitions 7/50 dead transitions. [2021-03-25 05:00:47,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 50 transitions, 437 flow [2021-03-25 05:00:47,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:00:47,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:00:47,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 624 transitions. [2021-03-25 05:00:47,583 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7490996398559424 [2021-03-25 05:00:47,583 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 624 transitions. [2021-03-25 05:00:47,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 624 transitions. [2021-03-25 05:00:47,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:00:47,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 624 transitions. [2021-03-25 05:00:47,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 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 05:00:47,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:00:47,586 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:00:47,586 INFO L185 Difference]: Start difference. First operand has 41 places, 25 transitions, 149 flow. Second operand 7 states and 624 transitions. [2021-03-25 05:00:47,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 50 transitions, 437 flow [2021-03-25 05:00:47,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 50 transitions, 409 flow, removed 12 selfloop flow, removed 3 redundant places. [2021-03-25 05:00:47,589 INFO L241 Difference]: Finished difference. Result has 50 places, 35 transitions, 305 flow [2021-03-25 05:00:47,589 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=305, PETRI_PLACES=50, PETRI_TRANSITIONS=35} [2021-03-25 05:00:47,589 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2021-03-25 05:00:47,589 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:47,589 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 35 transitions, 305 flow [2021-03-25 05:00:47,589 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 35 transitions, 305 flow [2021-03-25 05:00:47,590 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 35 transitions, 305 flow [2021-03-25 05:00:47,597 INFO L129 PetriNetUnfolder]: 17/91 cut-off events. [2021-03-25 05:00:47,597 INFO L130 PetriNetUnfolder]: For 256/275 co-relation queries the response was YES. [2021-03-25 05:00:47,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 91 events. 17/91 cut-off events. For 256/275 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 405 event pairs, 2 based on Foata normal form. 1/91 useless extension candidates. Maximal degree in co-relation 332. Up to 27 conditions per place. [2021-03-25 05:00:47,598 INFO L142 LiptonReduction]: Number of co-enabled transitions 216 [2021-03-25 05:00:47,600 INFO L154 LiptonReduction]: Checked pairs total: 234 [2021-03-25 05:00:47,601 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:00:47,601 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12 [2021-03-25 05:00:47,601 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 305 flow [2021-03-25 05:00:47,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 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 05:00:47,602 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:00:47,602 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:00:47,602 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:00:47,602 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:00:47,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:00:47,602 INFO L82 PathProgramCache]: Analyzing trace with hash 932558972, now seen corresponding path program 2 times [2021-03-25 05:00:47,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:00:47,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951429430] [2021-03-25 05:00:47,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:00:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:00:47,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:47,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:47,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:47,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:47,654 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:00:47,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:00:47,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:47,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:47,665 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 05:00:47,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951429430] [2021-03-25 05:00:47,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:00:47,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:00:47,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286362620] [2021-03-25 05:00:47,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:00:47,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:00:47,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:00:47,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:00:47,670 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2021-03-25 05:00:47,670 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 305 flow. Second operand has 6 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 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 05:00:47,670 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:00:47,670 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2021-03-25 05:00:47,670 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:00:47,712 INFO L129 PetriNetUnfolder]: 25/108 cut-off events. [2021-03-25 05:00:47,712 INFO L130 PetriNetUnfolder]: For 536/598 co-relation queries the response was YES. [2021-03-25 05:00:47,713 INFO L84 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 108 events. 25/108 cut-off events. For 536/598 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 483 event pairs, 1 based on Foata normal form. 11/117 useless extension candidates. Maximal degree in co-relation 492. Up to 34 conditions per place. [2021-03-25 05:00:47,715 INFO L132 encePairwiseOnDemand]: 112/119 looper letters, 9 selfloop transitions, 6 changer transitions 27/52 dead transitions. [2021-03-25 05:00:47,715 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 572 flow [2021-03-25 05:00:47,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:00:47,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:00:47,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 619 transitions. [2021-03-25 05:00:47,716 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7430972388955582 [2021-03-25 05:00:47,716 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 619 transitions. [2021-03-25 05:00:47,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 619 transitions. [2021-03-25 05:00:47,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:00:47,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 619 transitions. [2021-03-25 05:00:47,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.42857142857143) internal successors, (619), 7 states have internal predecessors, (619), 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 05:00:47,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:00:47,719 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:00:47,719 INFO L185 Difference]: Start difference. First operand has 48 places, 35 transitions, 305 flow. Second operand 7 states and 619 transitions. [2021-03-25 05:00:47,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 572 flow [2021-03-25 05:00:47,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 52 transitions, 556 flow, removed 8 selfloop flow, removed 3 redundant places. [2021-03-25 05:00:47,722 INFO L241 Difference]: Finished difference. Result has 55 places, 22 transitions, 178 flow [2021-03-25 05:00:47,722 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=178, PETRI_PLACES=55, PETRI_TRANSITIONS=22} [2021-03-25 05:00:47,722 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2021-03-25 05:00:47,723 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:47,723 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 22 transitions, 178 flow [2021-03-25 05:00:47,723 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 22 transitions, 178 flow [2021-03-25 05:00:47,723 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 22 transitions, 178 flow [2021-03-25 05:00:47,725 INFO L129 PetriNetUnfolder]: 1/31 cut-off events. [2021-03-25 05:00:47,725 INFO L130 PetriNetUnfolder]: For 150/161 co-relation queries the response was YES. [2021-03-25 05:00:47,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 31 events. 1/31 cut-off events. For 150/161 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 111. Up to 8 conditions per place. [2021-03-25 05:00:47,726 INFO L142 LiptonReduction]: Number of co-enabled transitions 130 [2021-03-25 05:00:47,823 INFO L154 LiptonReduction]: Checked pairs total: 171 [2021-03-25 05:00:47,825 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 05:00:47,826 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 104 [2021-03-25 05:00:47,828 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 20 transitions, 184 flow [2021-03-25 05:00:47,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 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 05:00:47,829 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:00:47,829 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:00:47,829 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 05:00:47,829 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:00:47,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:00:47,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1239922824, now seen corresponding path program 1 times [2021-03-25 05:00:47,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:00:47,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596511535] [2021-03-25 05:00:47,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:00:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:00:47,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:47,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:47,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:47,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:47,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:47,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:47,882 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 05:00:47,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596511535] [2021-03-25 05:00:47,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:00:47,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:00:47,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169272731] [2021-03-25 05:00:47,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:00:47,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:00:47,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:00:47,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:00:47,883 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 123 [2021-03-25 05:00:47,884 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 20 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 93.8) internal successors, (469), 5 states have internal predecessors, (469), 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 05:00:47,884 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:00:47,884 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 123 [2021-03-25 05:00:47,884 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:00:47,901 INFO L129 PetriNetUnfolder]: 1/34 cut-off events. [2021-03-25 05:00:47,901 INFO L130 PetriNetUnfolder]: For 482/498 co-relation queries the response was YES. [2021-03-25 05:00:47,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 34 events. 1/34 cut-off events. For 482/498 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 86 event pairs, 0 based on Foata normal form. 5/38 useless extension candidates. Maximal degree in co-relation 138. Up to 8 conditions per place. [2021-03-25 05:00:47,902 INFO L132 encePairwiseOnDemand]: 119/123 looper letters, 1 selfloop transitions, 3 changer transitions 5/21 dead transitions. [2021-03-25 05:00:47,902 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 21 transitions, 215 flow [2021-03-25 05:00:47,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:00:47,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:00:47,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 380 transitions. [2021-03-25 05:00:47,903 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7723577235772358 [2021-03-25 05:00:47,903 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 380 transitions. [2021-03-25 05:00:47,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 380 transitions. [2021-03-25 05:00:47,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:00:47,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 380 transitions. [2021-03-25 05:00:47,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:00:47,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:00:47,905 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:00:47,905 INFO L185 Difference]: Start difference. First operand has 51 places, 20 transitions, 184 flow. Second operand 4 states and 380 transitions. [2021-03-25 05:00:47,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 21 transitions, 215 flow [2021-03-25 05:00:47,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 21 transitions, 108 flow, removed 20 selfloop flow, removed 18 redundant places. [2021-03-25 05:00:47,906 INFO L241 Difference]: Finished difference. Result has 38 places, 16 transitions, 79 flow [2021-03-25 05:00:47,906 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=79, PETRI_PLACES=38, PETRI_TRANSITIONS=16} [2021-03-25 05:00:47,906 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2021-03-25 05:00:47,907 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:47,907 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 16 transitions, 79 flow [2021-03-25 05:00:47,907 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 16 transitions, 79 flow [2021-03-25 05:00:47,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 16 transitions, 79 flow [2021-03-25 05:00:47,908 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-25 05:00:47,908 INFO L130 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2021-03-25 05:00:47,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 18 events. 0/18 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 05:00:47,909 INFO L142 LiptonReduction]: Number of co-enabled transitions 68 [2021-03-25 05:00:47,940 INFO L154 LiptonReduction]: Checked pairs total: 47 [2021-03-25 05:00:47,940 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:00:47,940 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 33 [2021-03-25 05:00:47,942 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 14 transitions, 75 flow [2021-03-25 05:00:47,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 93.8) internal successors, (469), 5 states have internal predecessors, (469), 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 05:00:47,942 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:00:47,942 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:00:47,942 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 05:00:47,943 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:00:47,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:00:47,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1475447421, now seen corresponding path program 1 times [2021-03-25 05:00:47,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:00:47,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906339318] [2021-03-25 05:00:47,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:00:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:00:47,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:47,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:47,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:47,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:47,977 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 05:00:47,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906339318] [2021-03-25 05:00:47,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:00:47,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:00:47,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304305809] [2021-03-25 05:00:47,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:00:47,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:00:47,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:00:47,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:00:47,980 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 125 [2021-03-25 05:00:47,980 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 14 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:00:47,980 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:00:47,980 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 125 [2021-03-25 05:00:47,980 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:00:48,017 INFO L129 PetriNetUnfolder]: 23/60 cut-off events. [2021-03-25 05:00:48,017 INFO L130 PetriNetUnfolder]: For 188/198 co-relation queries the response was YES. [2021-03-25 05:00:48,017 INFO L84 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 60 events. 23/60 cut-off events. For 188/198 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 180 event pairs, 9 based on Foata normal form. 5/62 useless extension candidates. Maximal degree in co-relation 155. Up to 39 conditions per place. [2021-03-25 05:00:48,017 INFO L132 encePairwiseOnDemand]: 119/125 looper letters, 5 selfloop transitions, 3 changer transitions 8/24 dead transitions. [2021-03-25 05:00:48,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 24 transitions, 136 flow [2021-03-25 05:00:48,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:00:48,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:00:48,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 473 transitions. [2021-03-25 05:00:48,020 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7568 [2021-03-25 05:00:48,020 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 473 transitions. [2021-03-25 05:00:48,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 473 transitions. [2021-03-25 05:00:48,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:00:48,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 473 transitions. [2021-03-25 05:00:48,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.6) internal successors, (473), 5 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:00:48,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 125.0) internal successors, (750), 6 states have internal predecessors, (750), 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 05:00:48,022 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 125.0) internal successors, (750), 6 states have internal predecessors, (750), 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 05:00:48,022 INFO L185 Difference]: Start difference. First operand has 36 places, 14 transitions, 75 flow. Second operand 5 states and 473 transitions. [2021-03-25 05:00:48,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 24 transitions, 136 flow [2021-03-25 05:00:48,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 104 flow, removed 4 selfloop flow, removed 10 redundant places. [2021-03-25 05:00:48,023 INFO L241 Difference]: Finished difference. Result has 33 places, 16 transitions, 77 flow [2021-03-25 05:00:48,023 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=77, PETRI_PLACES=33, PETRI_TRANSITIONS=16} [2021-03-25 05:00:48,024 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2021-03-25 05:00:48,024 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:48,024 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 16 transitions, 77 flow [2021-03-25 05:00:48,024 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 16 transitions, 77 flow [2021-03-25 05:00:48,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 16 transitions, 77 flow [2021-03-25 05:00:48,028 INFO L129 PetriNetUnfolder]: 14/41 cut-off events. [2021-03-25 05:00:48,029 INFO L130 PetriNetUnfolder]: For 47/50 co-relation queries the response was YES. [2021-03-25 05:00:48,029 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 41 events. 14/41 cut-off events. For 47/50 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 102 event pairs, 8 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 119. Up to 30 conditions per place. [2021-03-25 05:00:48,029 INFO L142 LiptonReduction]: Number of co-enabled transitions 46 [2021-03-25 05:00:48,056 INFO L154 LiptonReduction]: Checked pairs total: 6 [2021-03-25 05:00:48,056 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:00:48,056 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 32 [2021-03-25 05:00:48,058 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 16 transitions, 78 flow [2021-03-25 05:00:48,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:00:48,059 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:00:48,059 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:00:48,059 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 05:00:48,059 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:00:48,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:00:48,059 INFO L82 PathProgramCache]: Analyzing trace with hash -545652951, now seen corresponding path program 1 times [2021-03-25 05:00:48,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:00:48,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399905725] [2021-03-25 05:00:48,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:00:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:00:48,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:48,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:48,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:48,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:48,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:48,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:48,102 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 05:00:48,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399905725] [2021-03-25 05:00:48,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:00:48,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:00:48,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262414633] [2021-03-25 05:00:48,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:00:48,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:00:48,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:00:48,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:00:48,104 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 126 [2021-03-25 05:00:48,104 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 16 transitions, 78 flow. Second operand has 5 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:00:48,104 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:00:48,104 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 126 [2021-03-25 05:00:48,104 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:00:48,130 INFO L129 PetriNetUnfolder]: 9/38 cut-off events. [2021-03-25 05:00:48,130 INFO L130 PetriNetUnfolder]: For 74/90 co-relation queries the response was YES. [2021-03-25 05:00:48,131 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 38 events. 9/38 cut-off events. For 74/90 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 92 event pairs, 1 based on Foata normal form. 7/43 useless extension candidates. Maximal degree in co-relation 131. Up to 27 conditions per place. [2021-03-25 05:00:48,131 INFO L132 encePairwiseOnDemand]: 119/126 looper letters, 3 selfloop transitions, 5 changer transitions 10/26 dead transitions. [2021-03-25 05:00:48,131 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 178 flow [2021-03-25 05:00:48,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 05:00:48,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 05:00:48,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 566 transitions. [2021-03-25 05:00:48,132 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7486772486772487 [2021-03-25 05:00:48,133 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 566 transitions. [2021-03-25 05:00:48,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 566 transitions. [2021-03-25 05:00:48,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:00:48,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 566 transitions. [2021-03-25 05:00:48,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.33333333333333) internal successors, (566), 6 states have internal predecessors, (566), 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 05:00:48,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 126.0) internal successors, (882), 7 states have internal predecessors, (882), 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 05:00:48,135 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 126.0) internal successors, (882), 7 states have internal predecessors, (882), 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 05:00:48,135 INFO L185 Difference]: Start difference. First operand has 31 places, 16 transitions, 78 flow. Second operand 6 states and 566 transitions. [2021-03-25 05:00:48,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 178 flow [2021-03-25 05:00:48,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 173 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 05:00:48,136 INFO L241 Difference]: Finished difference. Result has 37 places, 16 transitions, 97 flow [2021-03-25 05:00:48,136 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=97, PETRI_PLACES=37, PETRI_TRANSITIONS=16} [2021-03-25 05:00:48,136 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 6 predicate places. [2021-03-25 05:00:48,136 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:48,137 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 16 transitions, 97 flow [2021-03-25 05:00:48,137 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 16 transitions, 97 flow [2021-03-25 05:00:48,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 16 transitions, 97 flow [2021-03-25 05:00:48,139 INFO L129 PetriNetUnfolder]: 2/21 cut-off events. [2021-03-25 05:00:48,139 INFO L130 PetriNetUnfolder]: For 42/47 co-relation queries the response was YES. [2021-03-25 05:00:48,139 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 21 events. 2/21 cut-off events. For 42/47 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 1 based on Foata normal form. 2/22 useless extension candidates. Maximal degree in co-relation 65. Up to 10 conditions per place. [2021-03-25 05:00:48,139 INFO L142 LiptonReduction]: Number of co-enabled transitions 40 [2021-03-25 05:00:48,238 INFO L154 LiptonReduction]: Checked pairs total: 4 [2021-03-25 05:00:48,238 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:00:48,238 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 102 [2021-03-25 05:00:48,239 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 15 transitions, 97 flow [2021-03-25 05:00:48,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:00:48,239 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:00:48,239 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:00:48,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 05:00:48,240 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:00:48,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:00:48,240 INFO L82 PathProgramCache]: Analyzing trace with hash -488758072, now seen corresponding path program 1 times [2021-03-25 05:00:48,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:00:48,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880112456] [2021-03-25 05:00:48,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:00:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:00:48,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:48,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:48,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:48,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:48,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:48,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:48,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:48,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:48,291 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 05:00:48,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880112456] [2021-03-25 05:00:48,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:00:48,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:00:48,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773612722] [2021-03-25 05:00:48,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:00:48,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:00:48,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:00:48,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:00:48,293 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 128 [2021-03-25 05:00:48,293 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 15 transitions, 97 flow. Second operand has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:00:48,293 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:00:48,294 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 128 [2021-03-25 05:00:48,294 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:00:48,305 INFO L129 PetriNetUnfolder]: 1/17 cut-off events. [2021-03-25 05:00:48,305 INFO L130 PetriNetUnfolder]: For 79/91 co-relation queries the response was YES. [2021-03-25 05:00:48,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 17 events. 1/17 cut-off events. For 79/91 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 0 based on Foata normal form. 4/18 useless extension candidates. Maximal degree in co-relation 56. Up to 6 conditions per place. [2021-03-25 05:00:48,305 INFO L132 encePairwiseOnDemand]: 121/128 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2021-03-25 05:00:48,305 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 14 transitions, 93 flow [2021-03-25 05:00:48,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:00:48,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:00:48,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 462 transitions. [2021-03-25 05:00:48,320 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.721875 [2021-03-25 05:00:48,320 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 462 transitions. [2021-03-25 05:00:48,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 462 transitions. [2021-03-25 05:00:48,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:00:48,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 462 transitions. [2021-03-25 05:00:48,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.4) internal successors, (462), 5 states have internal predecessors, (462), 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 05:00:48,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 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 05:00:48,322 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 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 05:00:48,323 INFO L185 Difference]: Start difference. First operand has 34 places, 15 transitions, 97 flow. Second operand 5 states and 462 transitions. [2021-03-25 05:00:48,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 14 transitions, 93 flow [2021-03-25 05:00:48,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 14 transitions, 72 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-25 05:00:48,324 INFO L241 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2021-03-25 05:00:48,324 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2021-03-25 05:00:48,324 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2021-03-25 05:00:48,324 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:48,324 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 0 transitions, 0 flow [2021-03-25 05:00:48,324 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 0 transitions, 0 flow [2021-03-25 05:00:48,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 05:00:48,325 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 05:00:48,325 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:00:48,325 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 05:00:48,325 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 05:00:48,325 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:00:48,325 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:00:48,325 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 05:00:48,325 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 05:00:48,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:00:48,326 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 05:00:48,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:00:48 BasicIcfg [2021-03-25 05:00:48,328 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:00:48,329 INFO L168 Benchmark]: Toolchain (without parser) took 4277.62 ms. Allocated memory was 385.9 MB in the beginning and 515.9 MB in the end (delta: 130.0 MB). Free memory was 349.4 MB in the beginning and 461.8 MB in the end (delta: -112.4 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.0 GB. [2021-03-25 05:00:48,329 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 385.9 MB. Free memory is still 366.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:00:48,329 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.31 ms. Allocated memory is still 385.9 MB. Free memory was 349.1 MB in the beginning and 348.6 MB in the end (delta: 532.7 kB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. [2021-03-25 05:00:48,330 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.28 ms. Allocated memory is still 385.9 MB. Free memory was 348.6 MB in the beginning and 346.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:00:48,330 INFO L168 Benchmark]: Boogie Preprocessor took 26.54 ms. Allocated memory is still 385.9 MB. Free memory was 346.5 MB in the beginning and 345.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:00:48,330 INFO L168 Benchmark]: RCFGBuilder took 379.83 ms. Allocated memory is still 385.9 MB. Free memory was 345.4 MB in the beginning and 322.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:00:48,330 INFO L168 Benchmark]: TraceAbstraction took 3434.37 ms. Allocated memory was 385.9 MB in the beginning and 515.9 MB in the end (delta: 130.0 MB). Free memory was 321.3 MB in the beginning and 461.8 MB in the end (delta: -140.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:00:48,331 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 385.9 MB. Free memory is still 366.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 390.31 ms. Allocated memory is still 385.9 MB. Free memory was 349.1 MB in the beginning and 348.6 MB in the end (delta: 532.7 kB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 41.28 ms. Allocated memory is still 385.9 MB. Free memory was 348.6 MB in the beginning and 346.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 26.54 ms. Allocated memory is still 385.9 MB. Free memory was 346.5 MB in the beginning and 345.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 379.83 ms. Allocated memory is still 385.9 MB. Free memory was 345.4 MB in the beginning and 322.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3434.37 ms. Allocated memory was 385.9 MB in the beginning and 515.9 MB in the end (delta: 130.0 MB). Free memory was 321.3 MB in the beginning and 461.8 MB in the end (delta: -140.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1276.2ms, 69 PlacesBefore, 31 PlacesAfterwards, 60 TransitionsBefore, 21 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 1328 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 804, positive: 757, positive conditional: 0, positive unconditional: 757, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 451, positive: 429, positive conditional: 0, positive unconditional: 429, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 451, positive: 429, positive conditional: 0, positive unconditional: 429, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 804, positive: 328, positive conditional: 0, positive unconditional: 328, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 451, unknown conditional: 0, unknown unconditional: 451] , Statistics on independence cache: Total cache size (in pairs): 40, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 204.0ms, 39 PlacesBefore, 34 PlacesAfterwards, 23 TransitionsBefore, 21 TransitionsAfterwards, 144 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 222 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 81, positive: 63, positive conditional: 0, positive unconditional: 63, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 11, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 11, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 81, positive: 55, positive conditional: 0, positive unconditional: 55, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 11, unknown conditional: 0, unknown unconditional: 11] , Statistics on independence cache: Total cache size (in pairs): 51, Positive cache size: 42, Positive conditional cache size: 0, Positive unconditional cache size: 42, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 346.2ms, 40 PlacesBefore, 36 PlacesAfterwards, 23 TransitionsBefore, 22 TransitionsAfterwards, 154 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 198 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 68, positive: 52, positive conditional: 0, positive unconditional: 52, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 68, positive: 49, positive conditional: 0, positive unconditional: 49, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 55, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.2ms, 44 PlacesBefore, 41 PlacesAfterwards, 25 TransitionsBefore, 25 TransitionsAfterwards, 164 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 172 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 110, positive: 96, positive conditional: 0, positive unconditional: 96, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 110, positive: 95, positive conditional: 0, positive unconditional: 95, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 56, Positive cache size: 46, Positive conditional cache size: 0, Positive unconditional cache size: 46, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.2ms, 50 PlacesBefore, 48 PlacesAfterwards, 35 TransitionsBefore, 35 TransitionsAfterwards, 216 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 234 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 86, positive: 72, positive conditional: 0, positive unconditional: 72, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 86, positive: 72, positive conditional: 0, positive unconditional: 72, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 56, Positive cache size: 46, Positive conditional cache size: 0, Positive unconditional cache size: 46, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 102.8ms, 55 PlacesBefore, 51 PlacesAfterwards, 22 TransitionsBefore, 20 TransitionsAfterwards, 130 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 171 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 99, positive: 85, positive conditional: 0, positive unconditional: 85, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 99, positive: 81, positive conditional: 0, positive unconditional: 81, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 33.3ms, 38 PlacesBefore, 36 PlacesAfterwards, 16 TransitionsBefore, 14 TransitionsAfterwards, 68 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 47 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 27, positive: 22, positive conditional: 0, positive unconditional: 22, 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: 10, positive: 10, positive conditional: 0, positive unconditional: 10, 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: 10, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 27, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 10, unknown conditional: 0, unknown unconditional: 10] , Statistics on independence cache: Total cache size (in pairs): 22, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 32.1ms, 33 PlacesBefore, 31 PlacesAfterwards, 16 TransitionsBefore, 16 TransitionsAfterwards, 46 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: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 14, Positive conditional cache size: 0, Positive unconditional cache size: 14, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 101.5ms, 37 PlacesBefore, 34 PlacesAfterwards, 16 TransitionsBefore, 15 TransitionsAfterwards, 40 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 4 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, 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: 4, positive: 4, positive conditional: 0, positive unconditional: 4, 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): 3, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.6ms, 31 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3367.6ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 502.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1325.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 69 SDtfs, 72 SDslu, 97 SDs, 0 SdLazy, 161 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 108.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 166.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=305occurred in iteration=4, InterpolantAutomatonStates: 55, 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: 16.9ms SsaConstructionTime, 160.8ms SatisfiabilityAnalysisTime, 368.7ms InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 449 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...