/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 00:46:07,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 00:46:07,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 00:46:07,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 00:46:07,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 00:46:07,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 00:46:07,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 00:46:07,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 00:46:07,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 00:46:07,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 00:46:07,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 00:46:07,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 00:46:07,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 00:46:07,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 00:46:07,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 00:46:07,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 00:46:07,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 00:46:07,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 00:46:07,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 00:46:07,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 00:46:07,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 00:46:07,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 00:46:07,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 00:46:07,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 00:46:07,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 00:46:07,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 00:46:07,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 00:46:07,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 00:46:07,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 00:46:07,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 00:46:07,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 00:46:07,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 00:46:07,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 00:46:07,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 00:46:07,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 00:46:08,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 00:46:08,004 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-RepeatedSemanticLbeWithPredicates.epf [2021-03-26 00:46:08,025 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 00:46:08,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 00:46:08,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 00:46:08,028 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 00:46:08,028 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 00:46:08,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 00:46:08,029 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 00:46:08,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 00:46:08,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 00:46:08,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 00:46:08,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 00:46:08,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 00:46:08,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 00:46:08,030 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 00:46:08,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 00:46:08,030 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 00:46:08,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 00:46:08,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 00:46:08,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 00:46:08,030 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 00:46:08,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 00:46:08,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 00:46:08,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 00:46:08,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 00:46:08,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 00:46:08,031 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 00:46:08,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 00:46:08,031 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 00:46:08,031 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 00:46:08,031 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 00:46:08,032 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 00:46:08,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 00:46:08,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 00:46:08,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 00:46:08,262 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 00:46:08,265 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 00:46:08,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2021-03-26 00:46:08,305 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bcd4d12a/2d6e299f4fd54022b0266f31b08b61c6/FLAG8ee8c97bc [2021-03-26 00:46:08,756 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 00:46:08,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2021-03-26 00:46:08,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bcd4d12a/2d6e299f4fd54022b0266f31b08b61c6/FLAG8ee8c97bc [2021-03-26 00:46:08,783 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bcd4d12a/2d6e299f4fd54022b0266f31b08b61c6 [2021-03-26 00:46:08,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 00:46:08,785 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 00:46:08,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 00:46:08,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 00:46:08,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 00:46:08,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 12:46:08" (1/1) ... [2021-03-26 00:46:08,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@273b9588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:46:08, skipping insertion in model container [2021-03-26 00:46:08,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 12:46:08" (1/1) ... [2021-03-26 00:46:08,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 00:46:08,835 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 00:46:08,987 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/safe025_pso.opt.i[949,962] [2021-03-26 00:46:09,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 00:46:09,083 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 00:46:09,090 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/safe025_pso.opt.i[949,962] [2021-03-26 00:46:09,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 00:46:09,168 INFO L208 MainTranslator]: Completed translation [2021-03-26 00:46:09,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:46:09 WrapperNode [2021-03-26 00:46:09,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 00:46:09,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 00:46:09,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 00:46:09,170 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 00:46:09,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:46:09" (1/1) ... [2021-03-26 00:46:09,197 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:46:09" (1/1) ... [2021-03-26 00:46:09,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 00:46:09,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 00:46:09,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 00:46:09,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 00:46:09,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:46:09" (1/1) ... [2021-03-26 00:46:09,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:46:09" (1/1) ... [2021-03-26 00:46:09,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:46:09" (1/1) ... [2021-03-26 00:46:09,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:46:09" (1/1) ... [2021-03-26 00:46:09,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:46:09" (1/1) ... [2021-03-26 00:46:09,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:46:09" (1/1) ... [2021-03-26 00:46:09,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:46:09" (1/1) ... [2021-03-26 00:46:09,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 00:46:09,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 00:46:09,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 00:46:09,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 00:46:09,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:46:09" (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 [2021-03-26 00:46:09,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 00:46:09,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-26 00:46:09,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 00:46:09,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 00:46:09,307 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-26 00:46:09,307 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-26 00:46:09,307 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-26 00:46:09,307 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-26 00:46:09,307 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-26 00:46:09,307 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-26 00:46:09,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 00:46:09,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-26 00:46:09,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 00:46:09,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 00:46:09,309 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 00:46:09,529 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 00:46:09,530 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-26 00:46:09,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 12:46:09 BoogieIcfgContainer [2021-03-26 00:46:09,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 00:46:09,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 00:46:09,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 00:46:09,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 00:46:09,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 12:46:08" (1/3) ... [2021-03-26 00:46:09,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774d6545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 12:46:09, skipping insertion in model container [2021-03-26 00:46:09,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:46:09" (2/3) ... [2021-03-26 00:46:09,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774d6545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 12:46:09, skipping insertion in model container [2021-03-26 00:46:09,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 12:46:09" (3/3) ... [2021-03-26 00:46:09,535 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_pso.opt.i [2021-03-26 00:46:09,538 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 00:46:09,541 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 00:46:09,542 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 00:46:09,569 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,570 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,570 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,570 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,570 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,570 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,570 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,570 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,570 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,571 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,571 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,571 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,571 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,571 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,571 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,571 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,571 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,571 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,572 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,572 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,572 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,572 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,572 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,572 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,572 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,572 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,573 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,573 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,573 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,573 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,573 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,573 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,573 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,573 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,573 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,574 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,575 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,575 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,575 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,575 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,580 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,580 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,580 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,580 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,584 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,585 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,585 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,585 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:46:09,588 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 00:46:09,599 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-26 00:46:09,619 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 00:46:09,619 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 00:46:09,619 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 00:46:09,619 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 00:46:09,619 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 00:46:09,619 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 00:46:09,619 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 00:46:09,619 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 00:46:09,628 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-26 00:46:09,669 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-26 00:46:09,669 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:46:09,672 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-26 00:46:09,672 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-26 00:46:09,676 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-26 00:46:09,676 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:46:09,684 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-26 00:46:09,686 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-26 00:46:09,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-26 00:46:09,716 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-26 00:46:09,717 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:46:09,717 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. [2021-03-26 00:46:09,718 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-26 00:46:10,900 INFO L154 LiptonReduction]: Checked pairs total: 1010 [2021-03-26 00:46:10,900 INFO L156 LiptonReduction]: Total number of compositions: 38 [2021-03-26 00:46:10,902 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1226 [2021-03-26 00:46:10,908 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-26 00:46:10,908 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:46:10,908 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:46:10,909 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:46:10,909 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:46:10,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:46:10,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1013680624, now seen corresponding path program 1 times [2021-03-26 00:46:10,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:46:10,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074217516] [2021-03-26 00:46:10,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:46:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:46:11,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:11,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:11,071 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-26 00:46:11,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 00:46:11,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:46:11,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074217516] [2021-03-26 00:46:11,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:46:11,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:46:11,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735110200] [2021-03-26 00:46:11,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:46:11,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:46:11,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:46:11,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:46:11,101 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 113 [2021-03-26 00:46:11,104 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 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) [2021-03-26 00:46:11,105 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:46:11,105 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 113 [2021-03-26 00:46:11,109 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:46:11,147 INFO L129 PetriNetUnfolder]: 44/126 cut-off events. [2021-03-26 00:46:11,147 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:46:11,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 126 events. 44/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 505 event pairs, 8 based on Foata normal form. 8/126 useless extension candidates. Maximal degree in co-relation 214. Up to 55 conditions per place. [2021-03-26 00:46:11,149 INFO L132 encePairwiseOnDemand]: 106/113 looper letters, 9 selfloop transitions, 6 changer transitions 0/29 dead transitions. [2021-03-26 00:46:11,149 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 97 flow [2021-03-26 00:46:11,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:46:11,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:46:11,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 369 transitions. [2021-03-26 00:46:11,157 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8163716814159292 [2021-03-26 00:46:11,157 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 369 transitions. [2021-03-26 00:46:11,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 369 transitions. [2021-03-26 00:46:11,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:46:11,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 369 transitions. [2021-03-26 00:46:11,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 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) [2021-03-26 00:46:11,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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) [2021-03-26 00:46:11,166 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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) [2021-03-26 00:46:11,167 INFO L185 Difference]: Start difference. First operand has 32 places, 22 transitions, 53 flow. Second operand 4 states and 369 transitions. [2021-03-26 00:46:11,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 97 flow [2021-03-26 00:46:11,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 94 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-26 00:46:11,169 INFO L241 Difference]: Finished difference. Result has 35 places, 26 transitions, 94 flow [2021-03-26 00:46:11,170 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2021-03-26 00:46:11,171 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2021-03-26 00:46:11,171 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:46:11,171 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 26 transitions, 94 flow [2021-03-26 00:46:11,171 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 26 transitions, 94 flow [2021-03-26 00:46:11,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 26 transitions, 94 flow [2021-03-26 00:46:11,180 INFO L129 PetriNetUnfolder]: 44/128 cut-off events. [2021-03-26 00:46:11,180 INFO L130 PetriNetUnfolder]: For 40/42 co-relation queries the response was YES. [2021-03-26 00:46:11,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 128 events. 44/128 cut-off events. For 40/42 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 549 event pairs, 17 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 270. Up to 52 conditions per place. [2021-03-26 00:46:11,181 INFO L142 LiptonReduction]: Number of co-enabled transitions 186 [2021-03-26 00:46:11,603 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-26 00:46:11,794 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-26 00:46:11,870 INFO L154 LiptonReduction]: Checked pairs total: 123 [2021-03-26 00:46:11,870 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-26 00:46:11,870 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 699 [2021-03-26 00:46:11,871 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 21 transitions, 84 flow [2021-03-26 00:46:11,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 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) [2021-03-26 00:46:11,872 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:46:11,872 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:46:11,872 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 00:46:11,872 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:46:11,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:46:11,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1359328769, now seen corresponding path program 1 times [2021-03-26 00:46:11,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:46:11,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175376139] [2021-03-26 00:46:11,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:46:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:46:11,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:11,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:46:11,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:11,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:11,944 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-26 00:46:11,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 00:46:11,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:46:11,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175376139] [2021-03-26 00:46:11,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:46:11,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:46:11,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924378707] [2021-03-26 00:46:11,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:46:11,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:46:11,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:46:11,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:46:11,956 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 118 [2021-03-26 00:46:11,956 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 21 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 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) [2021-03-26 00:46:11,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:46:11,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 118 [2021-03-26 00:46:11,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:46:11,985 INFO L129 PetriNetUnfolder]: 32/100 cut-off events. [2021-03-26 00:46:11,985 INFO L130 PetriNetUnfolder]: For 55/74 co-relation queries the response was YES. [2021-03-26 00:46:11,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 100 events. 32/100 cut-off events. For 55/74 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 375 event pairs, 4 based on Foata normal form. 6/105 useless extension candidates. Maximal degree in co-relation 283. Up to 43 conditions per place. [2021-03-26 00:46:11,986 INFO L132 encePairwiseOnDemand]: 111/118 looper letters, 10 selfloop transitions, 9 changer transitions 0/29 dead transitions. [2021-03-26 00:46:11,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 162 flow [2021-03-26 00:46:11,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:46:11,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:46:11,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 379 transitions. [2021-03-26 00:46:11,988 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8029661016949152 [2021-03-26 00:46:11,988 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 379 transitions. [2021-03-26 00:46:11,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 379 transitions. [2021-03-26 00:46:11,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:46:11,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 379 transitions. [2021-03-26 00:46:11,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 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) [2021-03-26 00:46:11,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:46:11,991 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:46:11,991 INFO L185 Difference]: Start difference. First operand has 30 places, 21 transitions, 84 flow. Second operand 4 states and 379 transitions. [2021-03-26 00:46:11,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 162 flow [2021-03-26 00:46:11,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 00:46:11,992 INFO L241 Difference]: Finished difference. Result has 35 places, 26 transitions, 155 flow [2021-03-26 00:46:11,992 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=155, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2021-03-26 00:46:11,993 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2021-03-26 00:46:11,993 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:46:11,993 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 26 transitions, 155 flow [2021-03-26 00:46:11,993 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 26 transitions, 155 flow [2021-03-26 00:46:11,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 26 transitions, 155 flow [2021-03-26 00:46:11,999 INFO L129 PetriNetUnfolder]: 32/101 cut-off events. [2021-03-26 00:46:11,999 INFO L130 PetriNetUnfolder]: For 129/135 co-relation queries the response was YES. [2021-03-26 00:46:11,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 101 events. 32/101 cut-off events. For 129/135 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 403 event pairs, 11 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 307. Up to 41 conditions per place. [2021-03-26 00:46:12,000 INFO L142 LiptonReduction]: Number of co-enabled transitions 158 [2021-03-26 00:46:12,015 INFO L154 LiptonReduction]: Checked pairs total: 108 [2021-03-26 00:46:12,015 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:46:12,015 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 22 [2021-03-26 00:46:12,017 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 155 flow [2021-03-26 00:46:12,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 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) [2021-03-26 00:46:12,017 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:46:12,017 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:46:12,017 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 00:46:12,017 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:46:12,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:46:12,018 INFO L82 PathProgramCache]: Analyzing trace with hash 20503259, now seen corresponding path program 1 times [2021-03-26 00:46:12,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:46:12,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237478058] [2021-03-26 00:46:12,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:46:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:46:12,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:12,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:46:12,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:12,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:12,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:46:12,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237478058] [2021-03-26 00:46:12,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:46:12,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:46:12,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825503945] [2021-03-26 00:46:12,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 00:46:12,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:46:12,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 00:46:12,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 00:46:12,073 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 118 [2021-03-26 00:46:12,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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) [2021-03-26 00:46:12,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:46:12,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 118 [2021-03-26 00:46:12,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:46:12,086 INFO L129 PetriNetUnfolder]: 23/79 cut-off events. [2021-03-26 00:46:12,086 INFO L130 PetriNetUnfolder]: For 173/206 co-relation queries the response was YES. [2021-03-26 00:46:12,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 79 events. 23/79 cut-off events. For 173/206 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 280 event pairs, 2 based on Foata normal form. 8/86 useless extension candidates. Maximal degree in co-relation 285. Up to 29 conditions per place. [2021-03-26 00:46:12,087 INFO L132 encePairwiseOnDemand]: 115/118 looper letters, 11 selfloop transitions, 5 changer transitions 0/29 dead transitions. [2021-03-26 00:46:12,087 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 212 flow [2021-03-26 00:46:12,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 00:46:12,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 00:46:12,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2021-03-26 00:46:12,088 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728813559322034 [2021-03-26 00:46:12,088 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2021-03-26 00:46:12,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2021-03-26 00:46:12,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:46:12,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2021-03-26 00:46:12,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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) [2021-03-26 00:46:12,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:46:12,090 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:46:12,090 INFO L185 Difference]: Start difference. First operand has 35 places, 26 transitions, 155 flow. Second operand 3 states and 309 transitions. [2021-03-26 00:46:12,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 212 flow [2021-03-26 00:46:12,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 209 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 00:46:12,091 INFO L241 Difference]: Finished difference. Result has 37 places, 26 transitions, 169 flow [2021-03-26 00:46:12,091 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2021-03-26 00:46:12,091 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 5 predicate places. [2021-03-26 00:46:12,092 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:46:12,092 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 26 transitions, 169 flow [2021-03-26 00:46:12,092 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 26 transitions, 169 flow [2021-03-26 00:46:12,092 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 26 transitions, 169 flow [2021-03-26 00:46:12,096 INFO L129 PetriNetUnfolder]: 23/84 cut-off events. [2021-03-26 00:46:12,096 INFO L130 PetriNetUnfolder]: For 142/150 co-relation queries the response was YES. [2021-03-26 00:46:12,097 INFO L84 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 84 events. 23/84 cut-off events. For 142/150 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 319 event pairs, 6 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 280. Up to 28 conditions per place. [2021-03-26 00:46:12,097 INFO L142 LiptonReduction]: Number of co-enabled transitions 158 [2021-03-26 00:46:12,099 INFO L154 LiptonReduction]: Checked pairs total: 108 [2021-03-26 00:46:12,099 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:46:12,099 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-26 00:46:12,100 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 169 flow [2021-03-26 00:46:12,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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) [2021-03-26 00:46:12,100 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:46:12,101 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:46:12,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 00:46:12,101 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:46:12,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:46:12,101 INFO L82 PathProgramCache]: Analyzing trace with hash 673022833, now seen corresponding path program 1 times [2021-03-26 00:46:12,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:46:12,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074622081] [2021-03-26 00:46:12,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:46:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:46:12,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:12,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:12,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:12,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:46:12,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:46:12,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074622081] [2021-03-26 00:46:12,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:46:12,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:46:12,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768144535] [2021-03-26 00:46:12,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 00:46:12,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:46:12,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 00:46:12,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 00:46:12,139 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 118 [2021-03-26 00:46:12,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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) [2021-03-26 00:46:12,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:46:12,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 118 [2021-03-26 00:46:12,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:46:12,160 INFO L129 PetriNetUnfolder]: 74/188 cut-off events. [2021-03-26 00:46:12,160 INFO L130 PetriNetUnfolder]: For 219/230 co-relation queries the response was YES. [2021-03-26 00:46:12,161 INFO L84 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 188 events. 74/188 cut-off events. For 219/230 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 933 event pairs, 27 based on Foata normal form. 3/176 useless extension candidates. Maximal degree in co-relation 534. Up to 118 conditions per place. [2021-03-26 00:46:12,162 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 4 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2021-03-26 00:46:12,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 29 transitions, 191 flow [2021-03-26 00:46:12,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 00:46:12,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 00:46:12,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2021-03-26 00:46:12,164 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8305084745762712 [2021-03-26 00:46:12,164 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2021-03-26 00:46:12,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2021-03-26 00:46:12,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:46:12,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2021-03-26 00:46:12,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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) [2021-03-26 00:46:12,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:46:12,165 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:46:12,165 INFO L185 Difference]: Start difference. First operand has 37 places, 26 transitions, 169 flow. Second operand 3 states and 294 transitions. [2021-03-26 00:46:12,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 29 transitions, 191 flow [2021-03-26 00:46:12,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 29 transitions, 181 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 00:46:12,167 INFO L241 Difference]: Finished difference. Result has 38 places, 29 transitions, 185 flow [2021-03-26 00:46:12,167 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=38, PETRI_TRANSITIONS=29} [2021-03-26 00:46:12,167 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 6 predicate places. [2021-03-26 00:46:12,168 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:46:12,168 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 29 transitions, 185 flow [2021-03-26 00:46:12,168 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 29 transitions, 185 flow [2021-03-26 00:46:12,168 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 29 transitions, 185 flow [2021-03-26 00:46:12,177 INFO L129 PetriNetUnfolder]: 77/199 cut-off events. [2021-03-26 00:46:12,177 INFO L130 PetriNetUnfolder]: For 176/186 co-relation queries the response was YES. [2021-03-26 00:46:12,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 199 events. 77/199 cut-off events. For 176/186 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1013 event pairs, 26 based on Foata normal form. 2/192 useless extension candidates. Maximal degree in co-relation 563. Up to 126 conditions per place. [2021-03-26 00:46:12,178 INFO L142 LiptonReduction]: Number of co-enabled transitions 194 [2021-03-26 00:46:12,180 INFO L154 LiptonReduction]: Checked pairs total: 38 [2021-03-26 00:46:12,180 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:46:12,180 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12 [2021-03-26 00:46:12,181 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 29 transitions, 185 flow [2021-03-26 00:46:12,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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) [2021-03-26 00:46:12,181 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:46:12,181 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:46:12,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 00:46:12,181 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:46:12,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:46:12,181 INFO L82 PathProgramCache]: Analyzing trace with hash -419209750, now seen corresponding path program 1 times [2021-03-26 00:46:12,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:46:12,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155342298] [2021-03-26 00:46:12,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:46:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:46:12,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:12,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:12,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:12,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:12,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:12,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:46:12,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:46:12,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155342298] [2021-03-26 00:46:12,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:46:12,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:46:12,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506182414] [2021-03-26 00:46:12,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:46:12,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:46:12,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:46:12,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:46:12,217 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 118 [2021-03-26 00:46:12,218 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 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) [2021-03-26 00:46:12,218 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:46:12,218 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 118 [2021-03-26 00:46:12,218 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:46:12,244 INFO L129 PetriNetUnfolder]: 44/130 cut-off events. [2021-03-26 00:46:12,244 INFO L130 PetriNetUnfolder]: For 162/205 co-relation queries the response was YES. [2021-03-26 00:46:12,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 130 events. 44/130 cut-off events. For 162/205 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 548 event pairs, 7 based on Foata normal form. 39/164 useless extension candidates. Maximal degree in co-relation 462. Up to 70 conditions per place. [2021-03-26 00:46:12,245 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 4 selfloop transitions, 7 changer transitions 0/32 dead transitions. [2021-03-26 00:46:12,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 219 flow [2021-03-26 00:46:12,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:46:12,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:46:12,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 392 transitions. [2021-03-26 00:46:12,247 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8305084745762712 [2021-03-26 00:46:12,247 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 392 transitions. [2021-03-26 00:46:12,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 392 transitions. [2021-03-26 00:46:12,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:46:12,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 392 transitions. [2021-03-26 00:46:12,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 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) [2021-03-26 00:46:12,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:46:12,249 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:46:12,249 INFO L185 Difference]: Start difference. First operand has 38 places, 29 transitions, 185 flow. Second operand 4 states and 392 transitions. [2021-03-26 00:46:12,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 219 flow [2021-03-26 00:46:12,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 32 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 00:46:12,251 INFO L241 Difference]: Finished difference. Result has 41 places, 32 transitions, 221 flow [2021-03-26 00:46:12,251 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=221, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2021-03-26 00:46:12,251 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2021-03-26 00:46:12,251 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:46:12,252 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 32 transitions, 221 flow [2021-03-26 00:46:12,252 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 32 transitions, 221 flow [2021-03-26 00:46:12,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 32 transitions, 221 flow [2021-03-26 00:46:12,259 INFO L129 PetriNetUnfolder]: 44/134 cut-off events. [2021-03-26 00:46:12,259 INFO L130 PetriNetUnfolder]: For 183/204 co-relation queries the response was YES. [2021-03-26 00:46:12,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 134 events. 44/134 cut-off events. For 183/204 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 581 event pairs, 6 based on Foata normal form. 9/139 useless extension candidates. Maximal degree in co-relation 483. Up to 74 conditions per place. [2021-03-26 00:46:12,261 INFO L142 LiptonReduction]: Number of co-enabled transitions 184 [2021-03-26 00:46:12,262 INFO L154 LiptonReduction]: Checked pairs total: 38 [2021-03-26 00:46:12,262 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:46:12,262 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-03-26 00:46:12,264 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 221 flow [2021-03-26 00:46:12,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 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) [2021-03-26 00:46:12,264 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:46:12,265 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:46:12,265 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 00:46:12,265 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:46:12,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:46:12,265 INFO L82 PathProgramCache]: Analyzing trace with hash -2125959514, now seen corresponding path program 1 times [2021-03-26 00:46:12,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:46:12,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881238215] [2021-03-26 00:46:12,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:46:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:46:12,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:12,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:12,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:12,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:12,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:12,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:12,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:12,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:46:12,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:46:12,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881238215] [2021-03-26 00:46:12,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:46:12,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 00:46:12,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049141649] [2021-03-26 00:46:12,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 00:46:12,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:46:12,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 00:46:12,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-26 00:46:12,319 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 118 [2021-03-26 00:46:12,319 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 221 flow. Second operand has 5 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 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) [2021-03-26 00:46:12,319 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:46:12,319 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 118 [2021-03-26 00:46:12,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:46:12,345 INFO L129 PetriNetUnfolder]: 36/103 cut-off events. [2021-03-26 00:46:12,346 INFO L130 PetriNetUnfolder]: For 245/324 co-relation queries the response was YES. [2021-03-26 00:46:12,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 103 events. 36/103 cut-off events. For 245/324 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 385 event pairs, 3 based on Foata normal form. 56/155 useless extension candidates. Maximal degree in co-relation 426. Up to 50 conditions per place. [2021-03-26 00:46:12,347 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 1 selfloop transitions, 10 changer transitions 0/32 dead transitions. [2021-03-26 00:46:12,347 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 32 transitions, 243 flow [2021-03-26 00:46:12,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 00:46:12,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 00:46:12,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 487 transitions. [2021-03-26 00:46:12,348 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8254237288135593 [2021-03-26 00:46:12,348 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 487 transitions. [2021-03-26 00:46:12,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 487 transitions. [2021-03-26 00:46:12,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:46:12,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 487 transitions. [2021-03-26 00:46:12,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.4) internal successors, (487), 5 states have internal predecessors, (487), 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) [2021-03-26 00:46:12,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:46:12,351 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:46:12,351 INFO L185 Difference]: Start difference. First operand has 41 places, 32 transitions, 221 flow. Second operand 5 states and 487 transitions. [2021-03-26 00:46:12,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 32 transitions, 243 flow [2021-03-26 00:46:12,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 32 transitions, 212 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-26 00:46:12,352 INFO L241 Difference]: Finished difference. Result has 41 places, 32 transitions, 218 flow [2021-03-26 00:46:12,352 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=218, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2021-03-26 00:46:12,353 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2021-03-26 00:46:12,353 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:46:12,353 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 32 transitions, 218 flow [2021-03-26 00:46:12,353 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 32 transitions, 218 flow [2021-03-26 00:46:12,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 32 transitions, 218 flow [2021-03-26 00:46:12,359 INFO L129 PetriNetUnfolder]: 37/107 cut-off events. [2021-03-26 00:46:12,359 INFO L130 PetriNetUnfolder]: For 167/176 co-relation queries the response was YES. [2021-03-26 00:46:12,359 INFO L84 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 107 events. 37/107 cut-off events. For 167/176 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 423 event pairs, 3 based on Foata normal form. 1/105 useless extension candidates. Maximal degree in co-relation 370. Up to 35 conditions per place. [2021-03-26 00:46:12,359 INFO L142 LiptonReduction]: Number of co-enabled transitions 156 [2021-03-26 00:46:12,417 INFO L154 LiptonReduction]: Checked pairs total: 68 [2021-03-26 00:46:12,417 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 00:46:12,417 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 64 [2021-03-26 00:46:12,419 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 216 flow [2021-03-26 00:46:12,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 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) [2021-03-26 00:46:12,419 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:46:12,419 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:46:12,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 00:46:12,419 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:46:12,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:46:12,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1111036189, now seen corresponding path program 1 times [2021-03-26 00:46:12,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:46:12,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447453694] [2021-03-26 00:46:12,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:46:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:46:12,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:12,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:46:12,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:12,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:12,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:12,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:12,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:46:12,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447453694] [2021-03-26 00:46:12,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:46:12,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:46:12,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006595113] [2021-03-26 00:46:12,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:46:12,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:46:12,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:46:12,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:46:12,484 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 119 [2021-03-26 00:46:12,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 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) [2021-03-26 00:46:12,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:46:12,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 119 [2021-03-26 00:46:12,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:46:12,508 INFO L129 PetriNetUnfolder]: 44/125 cut-off events. [2021-03-26 00:46:12,509 INFO L130 PetriNetUnfolder]: For 419/489 co-relation queries the response was YES. [2021-03-26 00:46:12,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 125 events. 44/125 cut-off events. For 419/489 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 526 event pairs, 0 based on Foata normal form. 21/141 useless extension candidates. Maximal degree in co-relation 482. Up to 43 conditions per place. [2021-03-26 00:46:12,509 INFO L132 encePairwiseOnDemand]: 115/119 looper letters, 9 selfloop transitions, 5 changer transitions 7/39 dead transitions. [2021-03-26 00:46:12,509 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 39 transitions, 320 flow [2021-03-26 00:46:12,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 00:46:12,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 00:46:12,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 487 transitions. [2021-03-26 00:46:12,511 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8184873949579832 [2021-03-26 00:46:12,511 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 487 transitions. [2021-03-26 00:46:12,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 487 transitions. [2021-03-26 00:46:12,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:46:12,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 487 transitions. [2021-03-26 00:46:12,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.4) internal successors, (487), 5 states have internal predecessors, (487), 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) [2021-03-26 00:46:12,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:46:12,513 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:46:12,513 INFO L185 Difference]: Start difference. First operand has 40 places, 31 transitions, 216 flow. Second operand 5 states and 487 transitions. [2021-03-26 00:46:12,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 39 transitions, 320 flow [2021-03-26 00:46:12,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 39 transitions, 294 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-26 00:46:12,515 INFO L241 Difference]: Finished difference. Result has 43 places, 31 transitions, 211 flow [2021-03-26 00:46:12,515 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=211, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2021-03-26 00:46:12,515 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2021-03-26 00:46:12,515 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:46:12,516 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 31 transitions, 211 flow [2021-03-26 00:46:12,516 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 31 transitions, 211 flow [2021-03-26 00:46:12,516 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 31 transitions, 211 flow [2021-03-26 00:46:12,521 INFO L129 PetriNetUnfolder]: 31/95 cut-off events. [2021-03-26 00:46:12,521 INFO L130 PetriNetUnfolder]: For 202/218 co-relation queries the response was YES. [2021-03-26 00:46:12,521 INFO L84 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 95 events. 31/95 cut-off events. For 202/218 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 403 event pairs, 2 based on Foata normal form. 7/98 useless extension candidates. Maximal degree in co-relation 327. Up to 26 conditions per place. [2021-03-26 00:46:12,522 INFO L142 LiptonReduction]: Number of co-enabled transitions 154 [2021-03-26 00:46:12,524 INFO L154 LiptonReduction]: Checked pairs total: 68 [2021-03-26 00:46:12,524 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:46:12,524 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-03-26 00:46:12,524 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 211 flow [2021-03-26 00:46:12,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 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) [2021-03-26 00:46:12,525 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:46:12,525 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:46:12,525 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 00:46:12,525 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:46:12,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:46:12,525 INFO L82 PathProgramCache]: Analyzing trace with hash 552557885, now seen corresponding path program 1 times [2021-03-26 00:46:12,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:46:12,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720174435] [2021-03-26 00:46:12,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:46:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:46:12,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:12,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:46:12,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:12,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:12,565 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-26 00:46:12,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 00:46:12,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:46:12,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720174435] [2021-03-26 00:46:12,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:46:12,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:46:12,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691760942] [2021-03-26 00:46:12,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:46:12,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:46:12,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:46:12,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:46:12,573 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 119 [2021-03-26 00:46:12,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 211 flow. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:46:12,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:46:12,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 119 [2021-03-26 00:46:12,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:46:12,609 INFO L129 PetriNetUnfolder]: 51/137 cut-off events. [2021-03-26 00:46:12,609 INFO L130 PetriNetUnfolder]: For 562/635 co-relation queries the response was YES. [2021-03-26 00:46:12,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 137 events. 51/137 cut-off events. For 562/635 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 576 event pairs, 0 based on Foata normal form. 20/153 useless extension candidates. Maximal degree in co-relation 530. Up to 32 conditions per place. [2021-03-26 00:46:12,610 INFO L132 encePairwiseOnDemand]: 111/119 looper letters, 8 selfloop transitions, 11 changer transitions 14/47 dead transitions. [2021-03-26 00:46:12,610 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 412 flow [2021-03-26 00:46:12,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 00:46:12,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 00:46:12,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 463 transitions. [2021-03-26 00:46:12,611 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7781512605042017 [2021-03-26 00:46:12,611 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 463 transitions. [2021-03-26 00:46:12,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 463 transitions. [2021-03-26 00:46:12,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:46:12,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 463 transitions. [2021-03-26 00:46:12,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.6) internal successors, (463), 5 states have internal predecessors, (463), 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) [2021-03-26 00:46:12,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:46:12,613 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:46:12,613 INFO L185 Difference]: Start difference. First operand has 41 places, 31 transitions, 211 flow. Second operand 5 states and 463 transitions. [2021-03-26 00:46:12,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 412 flow [2021-03-26 00:46:12,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 386 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-26 00:46:12,615 INFO L241 Difference]: Finished difference. Result has 46 places, 33 transitions, 255 flow [2021-03-26 00:46:12,615 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=255, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2021-03-26 00:46:12,615 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2021-03-26 00:46:12,615 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:46:12,616 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 33 transitions, 255 flow [2021-03-26 00:46:12,616 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 33 transitions, 255 flow [2021-03-26 00:46:12,616 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 33 transitions, 255 flow [2021-03-26 00:46:12,620 INFO L129 PetriNetUnfolder]: 24/84 cut-off events. [2021-03-26 00:46:12,620 INFO L130 PetriNetUnfolder]: For 220/237 co-relation queries the response was YES. [2021-03-26 00:46:12,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 84 events. 24/84 cut-off events. For 220/237 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 322 event pairs, 0 based on Foata normal form. 6/88 useless extension candidates. Maximal degree in co-relation 314. Up to 22 conditions per place. [2021-03-26 00:46:12,621 INFO L142 LiptonReduction]: Number of co-enabled transitions 88 [2021-03-26 00:46:12,622 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 00:46:12,622 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:46:12,622 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-26 00:46:12,625 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 255 flow [2021-03-26 00:46:12,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:46:12,625 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:46:12,625 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:46:12,625 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 00:46:12,625 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:46:12,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:46:12,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1452427877, now seen corresponding path program 2 times [2021-03-26 00:46:12,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:46:12,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477827765] [2021-03-26 00:46:12,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:46:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:46:12,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:12,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:46:12,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:12,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:12,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:12,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:12,663 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-26 00:46:12,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 00:46:12,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:46:12,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477827765] [2021-03-26 00:46:12,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:46:12,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 00:46:12,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811570950] [2021-03-26 00:46:12,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 00:46:12,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:46:12,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 00:46:12,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-26 00:46:12,674 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 119 [2021-03-26 00:46:12,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 255 flow. Second operand has 5 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) [2021-03-26 00:46:12,675 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:46:12,675 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 119 [2021-03-26 00:46:12,675 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:46:12,697 INFO L129 PetriNetUnfolder]: 28/101 cut-off events. [2021-03-26 00:46:12,698 INFO L130 PetriNetUnfolder]: For 310/348 co-relation queries the response was YES. [2021-03-26 00:46:12,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 101 events. 28/101 cut-off events. For 310/348 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 428 event pairs, 0 based on Foata normal form. 13/111 useless extension candidates. Maximal degree in co-relation 405. Up to 30 conditions per place. [2021-03-26 00:46:12,698 INFO L132 encePairwiseOnDemand]: 112/119 looper letters, 5 selfloop transitions, 11 changer transitions 3/35 dead transitions. [2021-03-26 00:46:12,698 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 35 transitions, 312 flow [2021-03-26 00:46:12,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 00:46:12,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 00:46:12,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 561 transitions. [2021-03-26 00:46:12,700 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7857142857142857 [2021-03-26 00:46:12,700 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 561 transitions. [2021-03-26 00:46:12,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 561 transitions. [2021-03-26 00:46:12,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:46:12,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 561 transitions. [2021-03-26 00:46:12,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 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) [2021-03-26 00:46:12,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 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) [2021-03-26 00:46:12,703 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 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) [2021-03-26 00:46:12,703 INFO L185 Difference]: Start difference. First operand has 46 places, 33 transitions, 255 flow. Second operand 6 states and 561 transitions. [2021-03-26 00:46:12,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 35 transitions, 312 flow [2021-03-26 00:46:12,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 35 transitions, 301 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-26 00:46:12,706 INFO L241 Difference]: Finished difference. Result has 50 places, 32 transitions, 257 flow [2021-03-26 00:46:12,706 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=257, PETRI_PLACES=50, PETRI_TRANSITIONS=32} [2021-03-26 00:46:12,706 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 18 predicate places. [2021-03-26 00:46:12,706 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:46:12,706 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 32 transitions, 257 flow [2021-03-26 00:46:12,707 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 32 transitions, 257 flow [2021-03-26 00:46:12,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 32 transitions, 257 flow [2021-03-26 00:46:12,712 INFO L129 PetriNetUnfolder]: 22/80 cut-off events. [2021-03-26 00:46:12,712 INFO L130 PetriNetUnfolder]: For 251/262 co-relation queries the response was YES. [2021-03-26 00:46:12,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 80 events. 22/80 cut-off events. For 251/262 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 290 event pairs, 0 based on Foata normal form. 5/82 useless extension candidates. Maximal degree in co-relation 309. Up to 22 conditions per place. [2021-03-26 00:46:12,712 INFO L142 LiptonReduction]: Number of co-enabled transitions 86 [2021-03-26 00:46:12,714 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 00:46:12,714 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:46:12,714 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-26 00:46:12,714 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 32 transitions, 257 flow [2021-03-26 00:46:12,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 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) [2021-03-26 00:46:12,715 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:46:12,715 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:46:12,715 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-26 00:46:12,715 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:46:12,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:46:12,715 INFO L82 PathProgramCache]: Analyzing trace with hash -660039517, now seen corresponding path program 3 times [2021-03-26 00:46:12,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:46:12,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806571673] [2021-03-26 00:46:12,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:46:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:46:12,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:12,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:12,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:46:12,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:46:12,750 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-26 00:46:12,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 00:46:12,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:46:12,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806571673] [2021-03-26 00:46:12,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:46:12,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:46:12,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275011125] [2021-03-26 00:46:12,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 00:46:12,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:46:12,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 00:46:12,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-26 00:46:12,760 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 119 [2021-03-26 00:46:12,760 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 32 transitions, 257 flow. Second operand has 5 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) [2021-03-26 00:46:12,760 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:46:12,760 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 119 [2021-03-26 00:46:12,760 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:46:12,774 INFO L129 PetriNetUnfolder]: 22/79 cut-off events. [2021-03-26 00:46:12,774 INFO L130 PetriNetUnfolder]: For 311/334 co-relation queries the response was YES. [2021-03-26 00:46:12,774 INFO L84 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 79 events. 22/79 cut-off events. For 311/334 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 289 event pairs, 0 based on Foata normal form. 9/86 useless extension candidates. Maximal degree in co-relation 340. Up to 21 conditions per place. [2021-03-26 00:46:12,774 INFO L132 encePairwiseOnDemand]: 116/119 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2021-03-26 00:46:12,774 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 32 transitions, 283 flow [2021-03-26 00:46:12,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:46:12,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:46:12,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 372 transitions. [2021-03-26 00:46:12,775 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7815126050420168 [2021-03-26 00:46:12,776 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 372 transitions. [2021-03-26 00:46:12,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 372 transitions. [2021-03-26 00:46:12,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:46:12,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 372 transitions. [2021-03-26 00:46:12,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2021-03-26 00:46:12,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 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) [2021-03-26 00:46:12,777 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 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) [2021-03-26 00:46:12,777 INFO L185 Difference]: Start difference. First operand has 48 places, 32 transitions, 257 flow. Second operand 4 states and 372 transitions. [2021-03-26 00:46:12,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 32 transitions, 283 flow [2021-03-26 00:46:12,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 32 transitions, 234 flow, removed 5 selfloop flow, removed 6 redundant places. [2021-03-26 00:46:12,779 INFO L241 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2021-03-26 00:46:12,780 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2021-03-26 00:46:12,780 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 12 predicate places. [2021-03-26 00:46:12,780 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:46:12,780 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 0 transitions, 0 flow [2021-03-26 00:46:12,780 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 0 transitions, 0 flow [2021-03-26 00:46:12,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 00:46:12,780 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 00:46:12,780 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:46:12,780 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. [2021-03-26 00:46:12,780 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 00:46:12,781 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 00:46:12,781 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:46:12,781 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-26 00:46:12,781 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 00:46:12,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 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) [2021-03-26 00:46:12,781 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-26 00:46:12,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 12:46:12 BasicIcfg [2021-03-26 00:46:12,784 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 00:46:12,784 INFO L168 Benchmark]: Toolchain (without parser) took 3999.26 ms. Allocated memory was 255.9 MB in the beginning and 398.5 MB in the end (delta: 142.6 MB). Free memory was 234.9 MB in the beginning and 284.3 MB in the end (delta: -49.4 MB). Peak memory consumption was 91.8 MB. Max. memory is 16.0 GB. [2021-03-26 00:46:12,785 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 00:46:12,785 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.49 ms. Allocated memory was 255.9 MB in the beginning and 331.4 MB in the end (delta: 75.5 MB). Free memory was 234.9 MB in the beginning and 293.7 MB in the end (delta: -58.8 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.0 GB. [2021-03-26 00:46:12,785 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.19 ms. Allocated memory is still 331.4 MB. Free memory was 293.7 MB in the beginning and 291.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 00:46:12,785 INFO L168 Benchmark]: Boogie Preprocessor took 25.03 ms. Allocated memory is still 331.4 MB. Free memory was 291.6 MB in the beginning and 290.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 00:46:12,786 INFO L168 Benchmark]: RCFGBuilder took 291.29 ms. Allocated memory is still 331.4 MB. Free memory was 290.2 MB in the beginning and 267.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-26 00:46:12,786 INFO L168 Benchmark]: TraceAbstraction took 3252.04 ms. Allocated memory was 331.4 MB in the beginning and 398.5 MB in the end (delta: 67.1 MB). Free memory was 267.8 MB in the beginning and 284.3 MB in the end (delta: -16.5 MB). Peak memory consumption was 49.3 MB. Max. memory is 16.0 GB. [2021-03-26 00:46:12,787 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 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 383.49 ms. Allocated memory was 255.9 MB in the beginning and 331.4 MB in the end (delta: 75.5 MB). Free memory was 234.9 MB in the beginning and 293.7 MB in the end (delta: -58.8 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 43.19 ms. Allocated memory is still 331.4 MB. Free memory was 293.7 MB in the beginning and 291.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 25.03 ms. Allocated memory is still 331.4 MB. Free memory was 291.6 MB in the beginning and 290.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 291.29 ms. Allocated memory is still 331.4 MB. Free memory was 290.2 MB in the beginning and 267.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3252.04 ms. Allocated memory was 331.4 MB in the beginning and 398.5 MB in the end (delta: 67.1 MB). Free memory was 267.8 MB in the beginning and 284.3 MB in the end (delta: -16.5 MB). Peak memory consumption was 49.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1214.1ms, 69 PlacesBefore, 32 PlacesAfterwards, 60 TransitionsBefore, 22 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 38 TotalNumberOfCompositions, 1010 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 751, positive: 715, positive conditional: 715, positive unconditional: 0, negative: 36, negative conditional: 36, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 562, positive: 544, positive conditional: 0, positive unconditional: 544, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 562, positive: 544, positive conditional: 0, positive unconditional: 544, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 562, positive: 536, positive conditional: 0, positive unconditional: 536, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 26, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 82, positive: 32, positive conditional: 0, positive unconditional: 32, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 751, positive: 171, positive conditional: 171, positive unconditional: 0, negative: 18, negative conditional: 18, negative unconditional: 0, unknown: 562, unknown conditional: 562, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 55, Positive cache size: 48, Positive conditional cache size: 48, Positive unconditional cache size: 0, Negative cache size: 7, Negative conditional cache size: 7, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 699.0ms, 35 PlacesBefore, 30 PlacesAfterwards, 26 TransitionsBefore, 21 TransitionsAfterwards, 186 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 123 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 62, positive: 55, positive conditional: 55, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 52, positive: 48, positive conditional: 10, positive unconditional: 38, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 52, positive: 48, positive conditional: 10, positive unconditional: 38, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 52, positive: 44, positive conditional: 0, positive unconditional: 44, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 22, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 62, positive: 7, positive conditional: 7, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 52, unknown conditional: 52, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 60, Positive cache size: 51, Positive conditional cache size: 51, Positive unconditional cache size: 0, Negative cache size: 9, Negative conditional cache size: 9, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 22.0ms, 35 PlacesBefore, 35 PlacesAfterwards, 26 TransitionsBefore, 26 TransitionsAfterwards, 158 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 108 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 87, positive: 80, positive conditional: 80, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 34, positive: 32, positive conditional: 13, positive unconditional: 19, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 34, positive: 32, positive conditional: 13, positive unconditional: 19, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 34, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 12, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 6, negative conditional: 3, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 87, positive: 48, positive conditional: 48, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 34, unknown conditional: 34, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 94, Positive cache size: 83, Positive conditional cache size: 83, Positive unconditional cache size: 0, Negative cache size: 11, Negative conditional cache size: 11, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.5ms, 37 PlacesBefore, 37 PlacesAfterwards, 26 TransitionsBefore, 26 TransitionsAfterwards, 158 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 108 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 97, positive: 90, positive conditional: 90, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 18, positive: 18, positive conditional: 8, positive unconditional: 10, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 18, positive: 18, positive conditional: 8, positive unconditional: 10, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 18, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 97, positive: 72, positive conditional: 72, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 18, unknown conditional: 18, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 101, Positive conditional cache size: 101, Positive unconditional cache size: 0, Negative cache size: 11, Negative conditional cache size: 11, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.1ms, 38 PlacesBefore, 38 PlacesAfterwards, 29 TransitionsBefore, 29 TransitionsAfterwards, 194 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 38 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 20, positive: 18, positive conditional: 18, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 1, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 1, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 20, positive: 14, positive conditional: 14, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 4, unknown conditional: 4, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 116, Positive cache size: 105, Positive conditional cache size: 105, Positive unconditional cache size: 0, Negative cache size: 11, Negative conditional cache size: 11, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.5ms, 41 PlacesBefore, 41 PlacesAfterwards, 32 TransitionsBefore, 32 TransitionsAfterwards, 184 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 38 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 26, positive: 24, positive conditional: 24, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 3, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 3, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 26, positive: 20, positive conditional: 20, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 4, unknown conditional: 4, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 120, Positive cache size: 109, Positive conditional cache size: 109, Positive unconditional cache size: 0, Negative cache size: 11, Negative conditional cache size: 11, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 64.3ms, 41 PlacesBefore, 40 PlacesAfterwards, 32 TransitionsBefore, 31 TransitionsAfterwards, 156 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 68 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 36, positive: 32, positive conditional: 32, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 2, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 2, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 36, positive: 29, positive conditional: 29, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 3, unknown conditional: 3, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 105, Positive cache size: 99, Positive conditional cache size: 99, Positive unconditional cache size: 0, Negative cache size: 6, Negative conditional cache size: 6, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.2ms, 43 PlacesBefore, 41 PlacesAfterwards, 31 TransitionsBefore, 31 TransitionsAfterwards, 154 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 68 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 56, positive: 52, positive conditional: 52, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 5, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 5, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 56, positive: 45, positive conditional: 45, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 7, unknown conditional: 7, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 106, Positive conditional cache size: 106, Positive unconditional cache size: 0, Negative cache size: 6, Negative conditional cache size: 6, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.7ms, 46 PlacesBefore, 46 PlacesAfterwards, 33 TransitionsBefore, 33 TransitionsAfterwards, 88 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: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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): 112, Positive cache size: 106, Positive conditional cache size: 106, Positive unconditional cache size: 0, Negative cache size: 6, Negative conditional cache size: 6, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.2ms, 50 PlacesBefore, 48 PlacesAfterwards, 32 TransitionsBefore, 32 TransitionsAfterwards, 86 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: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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): 112, Positive cache size: 106, Positive conditional cache size: 106, Positive unconditional cache size: 0, Negative cache size: 6, Negative conditional cache size: 6, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.4ms, 44 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: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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): 112, Positive cache size: 106, Positive conditional cache size: 106, Positive unconditional cache size: 0, Negative cache size: 6, Negative conditional cache size: 6, 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: 2.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3166.2ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 362.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1286.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 52 SDtfs, 24 SDslu, 19 SDs, 0 SdLazy, 111 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 80.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 82.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=257occurred in iteration=9, InterpolantAutomatonStates: 43, 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: 17.2ms SsaConstructionTime, 138.6ms SatisfiabilityAnalysisTime, 379.0ms InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 651 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...