/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/safe013_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 00:40:04,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 00:40:04,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 00:40:05,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 00:40:05,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 00:40:05,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 00:40:05,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 00:40:05,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 00:40:05,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 00:40:05,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 00:40:05,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 00:40:05,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 00:40:05,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 00:40:05,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 00:40:05,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 00:40:05,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 00:40:05,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 00:40:05,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 00:40:05,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 00:40:05,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 00:40:05,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 00:40:05,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 00:40:05,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 00:40:05,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 00:40:05,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-26 00:40:05,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-26 00:40:05,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-26 00:40:05,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-26 00:40:05,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-26 00:40:05,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-26 00:40:05,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 00:40:05,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 00:40:05,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 00:40:05,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 00:40:05,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 00:40:05,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 00:40:05,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 00:40:05,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 00:40:05,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 00:40:05,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 00:40:05,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 00:40:05,059 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 00:40:05,090 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 00:40:05,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 00:40:05,093 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 00:40:05,093 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 00:40:05,093 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 00:40:05,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 00:40:05,093 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 00:40:05,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 00:40:05,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 00:40:05,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 00:40:05,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 00:40:05,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 00:40:05,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 00:40:05,095 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 00:40:05,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 00:40:05,095 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 00:40:05,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 00:40:05,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 00:40:05,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 00:40:05,095 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 00:40:05,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 00:40:05,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 00:40:05,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 00:40:05,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 00:40:05,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 00:40:05,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 00:40:05,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 00:40:05,096 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 00:40:05,096 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 00:40:05,096 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 00:40:05,096 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 00:40:05,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 00:40:05,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 00:40:05,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 00:40:05,357 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 00:40:05,358 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 00:40:05,358 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2021-03-26 00:40:05,404 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/661c004df/7f24c5bf71964302b34782203dfbc9b9/FLAGff7c5e035 [2021-03-26 00:40:05,784 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 00:40:05,784 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2021-03-26 00:40:05,805 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/661c004df/7f24c5bf71964302b34782203dfbc9b9/FLAGff7c5e035 [2021-03-26 00:40:06,142 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/661c004df/7f24c5bf71964302b34782203dfbc9b9 [2021-03-26 00:40:06,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 00:40:06,144 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 00:40:06,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 00:40:06,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 00:40:06,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 00:40:06,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 12:40:06" (1/1) ... [2021-03-26 00:40:06,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4487fd85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:40:06, skipping insertion in model container [2021-03-26 00:40:06,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 12:40:06" (1/1) ... [2021-03-26 00:40:06,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 00:40:06,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 00:40:06,289 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/safe013_tso.oepc.i[950,963] [2021-03-26 00:40:06,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 00:40:06,426 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 00:40:06,434 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/safe013_tso.oepc.i[950,963] [2021-03-26 00:40:06,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 00:40:06,526 INFO L208 MainTranslator]: Completed translation [2021-03-26 00:40:06,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:40:06 WrapperNode [2021-03-26 00:40:06,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 00:40:06,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 00:40:06,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 00:40:06,527 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 00:40:06,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:40:06" (1/1) ... [2021-03-26 00:40:06,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:40:06" (1/1) ... [2021-03-26 00:40:06,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 00:40:06,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 00:40:06,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 00:40:06,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 00:40:06,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:40:06" (1/1) ... [2021-03-26 00:40:06,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:40:06" (1/1) ... [2021-03-26 00:40:06,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:40:06" (1/1) ... [2021-03-26 00:40:06,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:40:06" (1/1) ... [2021-03-26 00:40:06,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:40:06" (1/1) ... [2021-03-26 00:40:06,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:40:06" (1/1) ... [2021-03-26 00:40:06,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:40:06" (1/1) ... [2021-03-26 00:40:06,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 00:40:06,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 00:40:06,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 00:40:06,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 00:40:06,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:40:06" (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 00:40:06,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 00:40:06,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-26 00:40:06,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 00:40:06,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 00:40:06,628 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-26 00:40:06,628 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-26 00:40:06,628 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-26 00:40:06,628 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-26 00:40:06,628 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-26 00:40:06,628 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-26 00:40:06,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 00:40:06,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-26 00:40:06,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 00:40:06,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 00:40:06,629 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 00:40:06,943 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 00:40:06,943 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-26 00:40:06,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 12:40:06 BoogieIcfgContainer [2021-03-26 00:40:06,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 00:40:06,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 00:40:06,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 00:40:06,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 00:40:06,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 12:40:06" (1/3) ... [2021-03-26 00:40:06,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42460064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 12:40:06, skipping insertion in model container [2021-03-26 00:40:06,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:40:06" (2/3) ... [2021-03-26 00:40:06,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42460064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 12:40:06, skipping insertion in model container [2021-03-26 00:40:06,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 12:40:06" (3/3) ... [2021-03-26 00:40:06,951 INFO L111 eAbstractionObserver]: Analyzing ICFG safe013_tso.oepc.i [2021-03-26 00:40:06,955 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 00:40:06,958 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 00:40:06,959 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 00:40:06,985 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,986 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,986 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,986 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,986 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,986 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,986 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,986 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,986 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,987 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,987 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,987 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,987 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,988 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,988 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,988 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,988 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,988 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,988 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,988 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,989 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,989 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,989 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,989 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,990 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,991 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,991 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,991 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,991 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,991 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,992 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,992 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,992 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,992 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,992 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,993 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,994 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,994 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,994 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,995 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,998 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,999 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,999 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:06,999 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:07,003 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:07,003 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:07,003 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:07,003 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:40:07,006 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 00:40:07,018 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-26 00:40:07,030 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 00:40:07,031 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 00:40:07,031 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 00:40:07,031 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 00:40:07,031 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 00:40:07,031 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 00:40:07,031 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 00:40:07,031 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 00:40:07,038 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-26 00:40:07,075 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-26 00:40:07,075 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:40:07,078 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 00:40:07,078 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-26 00:40:07,082 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-26 00:40:07,083 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:40:07,091 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-26 00:40:07,093 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-26 00:40:07,094 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-26 00:40:07,118 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-26 00:40:07,119 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:40:07,119 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 46 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 00:40:07,120 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-26 00:40:08,417 INFO L154 LiptonReduction]: Checked pairs total: 1010 [2021-03-26 00:40:08,417 INFO L156 LiptonReduction]: Total number of compositions: 38 [2021-03-26 00:40:08,419 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1336 [2021-03-26 00:40:08,426 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-26 00:40:08,426 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:40:08,426 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:40:08,426 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:40:08,426 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:40:08,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:40:08,429 INFO L82 PathProgramCache]: Analyzing trace with hash 2143165953, now seen corresponding path program 1 times [2021-03-26 00:40:08,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:40:08,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850490921] [2021-03-26 00:40:08,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:40:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:40:08,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:40:08,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:40:08,589 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:40:08,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:40:08,604 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 00:40:08,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850490921] [2021-03-26 00:40:08,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:40:08,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:40:08,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029242364] [2021-03-26 00:40:08,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:40:08,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:40:08,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:40:08,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:40:08,624 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 113 [2021-03-26 00:40:08,627 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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 00:40:08,627 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:40:08,628 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 113 [2021-03-26 00:40:08,632 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:40:08,662 INFO L129 PetriNetUnfolder]: 8/50 cut-off events. [2021-03-26 00:40:08,662 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:40:08,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 50 events. 8/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 124 event pairs, 2 based on Foata normal form. 3/49 useless extension candidates. Maximal degree in co-relation 75. Up to 19 conditions per place. [2021-03-26 00:40:08,664 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 6 selfloop transitions, 5 changer transitions 0/26 dead transitions. [2021-03-26 00:40:08,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 26 transitions, 83 flow [2021-03-26 00:40:08,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:40:08,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:40:08,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 381 transitions. [2021-03-26 00:40:08,677 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8429203539823009 [2021-03-26 00:40:08,677 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 381 transitions. [2021-03-26 00:40:08,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 381 transitions. [2021-03-26 00:40:08,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:40:08,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 381 transitions. [2021-03-26 00:40:08,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:40:08,688 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 00:40:08,688 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 00:40:08,690 INFO L185 Difference]: Start difference. First operand has 32 places, 22 transitions, 53 flow. Second operand 4 states and 381 transitions. [2021-03-26 00:40:08,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 26 transitions, 83 flow [2021-03-26 00:40:08,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 80 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-26 00:40:08,695 INFO L241 Difference]: Finished difference. Result has 34 places, 24 transitions, 77 flow [2021-03-26 00:40:08,696 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=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=77, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2021-03-26 00:40:08,697 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2021-03-26 00:40:08,697 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:40:08,697 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 24 transitions, 77 flow [2021-03-26 00:40:08,697 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 24 transitions, 77 flow [2021-03-26 00:40:08,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 24 transitions, 77 flow [2021-03-26 00:40:08,703 INFO L129 PetriNetUnfolder]: 6/47 cut-off events. [2021-03-26 00:40:08,703 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-03-26 00:40:08,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 47 events. 6/47 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 115 event pairs, 4 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 78. Up to 16 conditions per place. [2021-03-26 00:40:08,709 INFO L142 LiptonReduction]: Number of co-enabled transitions 176 [2021-03-26 00:40:08,991 INFO L154 LiptonReduction]: Checked pairs total: 219 [2021-03-26 00:40:08,991 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-26 00:40:08,991 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 294 [2021-03-26 00:40:08,993 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 69 flow [2021-03-26 00:40:08,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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 00:40:08,994 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:40:08,994 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:40:08,994 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 00:40:08,994 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:40:08,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:40:08,995 INFO L82 PathProgramCache]: Analyzing trace with hash 2018613826, now seen corresponding path program 1 times [2021-03-26 00:40:08,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:40:08,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328122253] [2021-03-26 00:40:08,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:40:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:40:09,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:40:09,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:40:09,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:40:09,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:40:09,042 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:40:09,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:40:09,048 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 00:40:09,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328122253] [2021-03-26 00:40:09,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:40:09,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:40:09,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090970599] [2021-03-26 00:40:09,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:40:09,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:40:09,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:40:09,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:40:09,062 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 117 [2021-03-26 00:40:09,062 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 69 flow. Second operand has 4 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 00:40:09,062 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:40:09,062 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 117 [2021-03-26 00:40:09,062 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:40:09,090 INFO L129 PetriNetUnfolder]: 35/110 cut-off events. [2021-03-26 00:40:09,090 INFO L130 PetriNetUnfolder]: For 77/94 co-relation queries the response was YES. [2021-03-26 00:40:09,091 INFO L84 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 110 events. 35/110 cut-off events. For 77/94 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 441 event pairs, 2 based on Foata normal form. 9/117 useless extension candidates. Maximal degree in co-relation 264. Up to 35 conditions per place. [2021-03-26 00:40:09,091 INFO L132 encePairwiseOnDemand]: 110/117 looper letters, 9 selfloop transitions, 15 changer transitions 0/35 dead transitions. [2021-03-26 00:40:09,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 185 flow [2021-03-26 00:40:09,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 00:40:09,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 00:40:09,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 482 transitions. [2021-03-26 00:40:09,095 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8239316239316239 [2021-03-26 00:40:09,095 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 482 transitions. [2021-03-26 00:40:09,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 482 transitions. [2021-03-26 00:40:09,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:40:09,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 482 transitions. [2021-03-26 00:40:09,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.4) internal successors, (482), 5 states have internal predecessors, (482), 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 00:40:09,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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 00:40:09,098 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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 00:40:09,098 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 69 flow. Second operand 5 states and 482 transitions. [2021-03-26 00:40:09,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 185 flow [2021-03-26 00:40:09,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 35 transitions, 167 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 00:40:09,099 INFO L241 Difference]: Finished difference. Result has 36 places, 31 transitions, 180 flow [2021-03-26 00:40:09,099 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2021-03-26 00:40:09,100 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2021-03-26 00:40:09,100 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:40:09,100 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 31 transitions, 180 flow [2021-03-26 00:40:09,100 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 31 transitions, 180 flow [2021-03-26 00:40:09,100 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 31 transitions, 180 flow [2021-03-26 00:40:09,107 INFO L129 PetriNetUnfolder]: 24/98 cut-off events. [2021-03-26 00:40:09,107 INFO L130 PetriNetUnfolder]: For 75/89 co-relation queries the response was YES. [2021-03-26 00:40:09,111 INFO L84 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 98 events. 24/98 cut-off events. For 75/89 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 436 event pairs, 5 based on Foata normal form. 1/98 useless extension candidates. Maximal degree in co-relation 285. Up to 34 conditions per place. [2021-03-26 00:40:09,112 INFO L142 LiptonReduction]: Number of co-enabled transitions 178 [2021-03-26 00:40:09,238 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-26 00:40:09,418 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-26 00:40:09,483 INFO L154 LiptonReduction]: Checked pairs total: 206 [2021-03-26 00:40:09,483 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 00:40:09,483 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 383 [2021-03-26 00:40:09,484 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 178 flow [2021-03-26 00:40:09,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 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 00:40:09,484 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:40:09,484 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:40:09,484 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 00:40:09,485 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:40:09,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:40:09,485 INFO L82 PathProgramCache]: Analyzing trace with hash -603840681, now seen corresponding path program 1 times [2021-03-26 00:40:09,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:40:09,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909142739] [2021-03-26 00:40:09,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:40:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:40:09,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:40:09,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:40:09,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:40:09,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:40:09,527 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:40:09,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:40:09,535 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 00:40:09,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909142739] [2021-03-26 00:40:09,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:40:09,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:40:09,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612569721] [2021-03-26 00:40:09,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 00:40:09,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:40:09,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 00:40:09,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 00:40:09,537 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 118 [2021-03-26 00:40:09,537 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 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 00:40:09,537 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:40:09,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 118 [2021-03-26 00:40:09,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:40:09,566 INFO L129 PetriNetUnfolder]: 25/101 cut-off events. [2021-03-26 00:40:09,566 INFO L130 PetriNetUnfolder]: For 196/240 co-relation queries the response was YES. [2021-03-26 00:40:09,567 INFO L84 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 101 events. 25/101 cut-off events. For 196/240 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 449 event pairs, 2 based on Foata normal form. 13/112 useless extension candidates. Maximal degree in co-relation 357. Up to 32 conditions per place. [2021-03-26 00:40:09,567 INFO L132 encePairwiseOnDemand]: 111/118 looper letters, 7 selfloop transitions, 8 changer transitions 12/37 dead transitions. [2021-03-26 00:40:09,567 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 37 transitions, 287 flow [2021-03-26 00:40:09,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 00:40:09,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 00:40:09,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 478 transitions. [2021-03-26 00:40:09,570 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8101694915254237 [2021-03-26 00:40:09,570 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 478 transitions. [2021-03-26 00:40:09,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 478 transitions. [2021-03-26 00:40:09,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:40:09,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 478 transitions. [2021-03-26 00:40:09,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.6) internal successors, (478), 5 states have internal predecessors, (478), 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 00:40:09,572 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 00:40:09,572 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 00:40:09,572 INFO L185 Difference]: Start difference. First operand has 35 places, 30 transitions, 178 flow. Second operand 5 states and 478 transitions. [2021-03-26 00:40:09,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 37 transitions, 287 flow [2021-03-26 00:40:09,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 37 transitions, 287 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-26 00:40:09,574 INFO L241 Difference]: Finished difference. Result has 41 places, 23 transitions, 150 flow [2021-03-26 00:40:09,575 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=150, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2021-03-26 00:40:09,575 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2021-03-26 00:40:09,575 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:40:09,575 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 23 transitions, 150 flow [2021-03-26 00:40:09,575 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 23 transitions, 150 flow [2021-03-26 00:40:09,575 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 23 transitions, 150 flow [2021-03-26 00:40:09,579 INFO L129 PetriNetUnfolder]: 9/49 cut-off events. [2021-03-26 00:40:09,579 INFO L130 PetriNetUnfolder]: For 83/86 co-relation queries the response was YES. [2021-03-26 00:40:09,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 49 events. 9/49 cut-off events. For 83/86 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 145 event pairs, 4 based on Foata normal form. 1/49 useless extension candidates. Maximal degree in co-relation 169. Up to 19 conditions per place. [2021-03-26 00:40:09,580 INFO L142 LiptonReduction]: Number of co-enabled transitions 122 [2021-03-26 00:40:09,584 INFO L154 LiptonReduction]: Checked pairs total: 27 [2021-03-26 00:40:09,584 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:40:09,584 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-03-26 00:40:09,585 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 150 flow [2021-03-26 00:40:09,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 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 00:40:09,585 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:40:09,586 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:40:09,586 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 00:40:09,586 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:40:09,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:40:09,586 INFO L82 PathProgramCache]: Analyzing trace with hash 125842264, now seen corresponding path program 1 times [2021-03-26 00:40:09,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:40:09,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485855158] [2021-03-26 00:40:09,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:40:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:40:09,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:40:09,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:40:09,611 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:40:09,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:40:09,616 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 00:40:09,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485855158] [2021-03-26 00:40:09,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:40:09,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:40:09,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174886206] [2021-03-26 00:40:09,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:40:09,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:40:09,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:40:09,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:40:09,617 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 118 [2021-03-26 00:40:09,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 150 flow. Second operand has 4 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 00:40:09,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:40:09,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 118 [2021-03-26 00:40:09,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:40:09,632 INFO L129 PetriNetUnfolder]: 7/44 cut-off events. [2021-03-26 00:40:09,632 INFO L130 PetriNetUnfolder]: For 94/103 co-relation queries the response was YES. [2021-03-26 00:40:09,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 44 events. 7/44 cut-off events. For 94/103 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 116 event pairs, 3 based on Foata normal form. 4/47 useless extension candidates. Maximal degree in co-relation 171. Up to 18 conditions per place. [2021-03-26 00:40:09,632 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 4 selfloop transitions, 8 changer transitions 0/24 dead transitions. [2021-03-26 00:40:09,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 24 transitions, 184 flow [2021-03-26 00:40:09,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:40:09,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:40:09,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 387 transitions. [2021-03-26 00:40:09,633 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8199152542372882 [2021-03-26 00:40:09,633 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 387 transitions. [2021-03-26 00:40:09,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 387 transitions. [2021-03-26 00:40:09,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:40:09,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 387 transitions. [2021-03-26 00:40:09,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 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 00:40:09,635 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 00:40:09,636 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 00:40:09,636 INFO L185 Difference]: Start difference. First operand has 41 places, 23 transitions, 150 flow. Second operand 4 states and 387 transitions. [2021-03-26 00:40:09,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 24 transitions, 184 flow [2021-03-26 00:40:09,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 24 transitions, 145 flow, removed 4 selfloop flow, removed 7 redundant places. [2021-03-26 00:40:09,637 INFO L241 Difference]: Finished difference. Result has 38 places, 24 transitions, 144 flow [2021-03-26 00:40:09,637 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=38, PETRI_TRANSITIONS=24} [2021-03-26 00:40:09,637 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 6 predicate places. [2021-03-26 00:40:09,637 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:40:09,637 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 24 transitions, 144 flow [2021-03-26 00:40:09,638 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 24 transitions, 144 flow [2021-03-26 00:40:09,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 24 transitions, 144 flow [2021-03-26 00:40:09,641 INFO L129 PetriNetUnfolder]: 7/44 cut-off events. [2021-03-26 00:40:09,641 INFO L130 PetriNetUnfolder]: For 49/52 co-relation queries the response was YES. [2021-03-26 00:40:09,641 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 44 events. 7/44 cut-off events. For 49/52 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 116 event pairs, 3 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 134. Up to 17 conditions per place. [2021-03-26 00:40:09,641 INFO L142 LiptonReduction]: Number of co-enabled transitions 126 [2021-03-26 00:40:09,643 INFO L154 LiptonReduction]: Checked pairs total: 47 [2021-03-26 00:40:09,643 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:40:09,643 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-26 00:40:09,643 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 24 transitions, 144 flow [2021-03-26 00:40:09,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 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 00:40:09,644 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:40:09,644 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:40:09,644 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 00:40:09,644 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:40:09,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:40:09,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1752088289, now seen corresponding path program 1 times [2021-03-26 00:40:09,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:40:09,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421855924] [2021-03-26 00:40:09,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:40:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:40:09,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:40:09,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:40:09,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:40:09,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:40:09,677 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 00:40:09,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421855924] [2021-03-26 00:40:09,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:40:09,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:40:09,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101253317] [2021-03-26 00:40:09,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 00:40:09,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:40:09,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 00:40:09,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 00:40:09,679 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 118 [2021-03-26 00:40:09,680 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 24 transitions, 144 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 00:40:09,680 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:40:09,680 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 118 [2021-03-26 00:40:09,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:40:09,701 INFO L129 PetriNetUnfolder]: 47/122 cut-off events. [2021-03-26 00:40:09,701 INFO L130 PetriNetUnfolder]: For 136/150 co-relation queries the response was YES. [2021-03-26 00:40:09,701 INFO L84 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 122 events. 47/122 cut-off events. For 136/150 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 515 event pairs, 19 based on Foata normal form. 2/112 useless extension candidates. Maximal degree in co-relation 332. Up to 82 conditions per place. [2021-03-26 00:40:09,702 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 4 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2021-03-26 00:40:09,702 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 27 transitions, 166 flow [2021-03-26 00:40:09,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 00:40:09,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 00:40:09,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2021-03-26 00:40:09,703 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8305084745762712 [2021-03-26 00:40:09,703 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2021-03-26 00:40:09,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2021-03-26 00:40:09,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:40:09,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2021-03-26 00:40:09,704 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 00:40:09,705 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 00:40:09,705 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 00:40:09,706 INFO L185 Difference]: Start difference. First operand has 38 places, 24 transitions, 144 flow. Second operand 3 states and 294 transitions. [2021-03-26 00:40:09,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 27 transitions, 166 flow [2021-03-26 00:40:09,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 27 transitions, 158 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-03-26 00:40:09,708 INFO L241 Difference]: Finished difference. Result has 40 places, 27 transitions, 162 flow [2021-03-26 00:40:09,708 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=40, PETRI_TRANSITIONS=27} [2021-03-26 00:40:09,708 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 8 predicate places. [2021-03-26 00:40:09,708 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:40:09,708 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 27 transitions, 162 flow [2021-03-26 00:40:09,708 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 27 transitions, 162 flow [2021-03-26 00:40:09,709 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 27 transitions, 162 flow [2021-03-26 00:40:09,719 INFO L129 PetriNetUnfolder]: 48/125 cut-off events. [2021-03-26 00:40:09,720 INFO L130 PetriNetUnfolder]: For 175/190 co-relation queries the response was YES. [2021-03-26 00:40:09,720 INFO L84 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 125 events. 48/125 cut-off events. For 175/190 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 530 event pairs, 18 based on Foata normal form. 2/121 useless extension candidates. Maximal degree in co-relation 355. Up to 80 conditions per place. [2021-03-26 00:40:09,721 INFO L142 LiptonReduction]: Number of co-enabled transitions 138 [2021-03-26 00:40:09,722 INFO L154 LiptonReduction]: Checked pairs total: 6 [2021-03-26 00:40:09,722 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:40:09,722 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 14 [2021-03-26 00:40:09,723 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 27 transitions, 162 flow [2021-03-26 00:40:09,723 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 00:40:09,723 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:40:09,723 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:40:09,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 00:40:09,724 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:40:09,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:40:09,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1475562407, now seen corresponding path program 1 times [2021-03-26 00:40:09,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:40:09,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370536775] [2021-03-26 00:40:09,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:40:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:40:09,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:40:09,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:40:09,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:40:09,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:40:09,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:40:09,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:40:09,751 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 00:40:09,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370536775] [2021-03-26 00:40:09,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:40:09,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:40:09,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148072283] [2021-03-26 00:40:09,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:40:09,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:40:09,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:40:09,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:40:09,752 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 118 [2021-03-26 00:40:09,753 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 162 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 00:40:09,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:40:09,753 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 118 [2021-03-26 00:40:09,753 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:40:09,769 INFO L129 PetriNetUnfolder]: 23/77 cut-off events. [2021-03-26 00:40:09,769 INFO L130 PetriNetUnfolder]: For 89/113 co-relation queries the response was YES. [2021-03-26 00:40:09,769 INFO L84 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 77 events. 23/77 cut-off events. For 89/113 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 250 event pairs, 3 based on Foata normal form. 22/96 useless extension candidates. Maximal degree in co-relation 258. Up to 48 conditions per place. [2021-03-26 00:40:09,770 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 4 selfloop transitions, 7 changer transitions 0/30 dead transitions. [2021-03-26 00:40:09,770 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 30 transitions, 196 flow [2021-03-26 00:40:09,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:40:09,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:40:09,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 392 transitions. [2021-03-26 00:40:09,771 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8305084745762712 [2021-03-26 00:40:09,771 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 392 transitions. [2021-03-26 00:40:09,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 392 transitions. [2021-03-26 00:40:09,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:40:09,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 392 transitions. [2021-03-26 00:40:09,772 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 00:40:09,773 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 00:40:09,773 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 00:40:09,773 INFO L185 Difference]: Start difference. First operand has 40 places, 27 transitions, 162 flow. Second operand 4 states and 392 transitions. [2021-03-26 00:40:09,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 30 transitions, 196 flow [2021-03-26 00:40:09,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 30 transitions, 177 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-26 00:40:09,776 INFO L241 Difference]: Finished difference. Result has 41 places, 30 transitions, 183 flow [2021-03-26 00:40:09,776 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2021-03-26 00:40:09,776 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2021-03-26 00:40:09,776 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:40:09,776 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 30 transitions, 183 flow [2021-03-26 00:40:09,777 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 30 transitions, 183 flow [2021-03-26 00:40:09,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 30 transitions, 183 flow [2021-03-26 00:40:09,782 INFO L129 PetriNetUnfolder]: 23/77 cut-off events. [2021-03-26 00:40:09,782 INFO L130 PetriNetUnfolder]: For 62/75 co-relation queries the response was YES. [2021-03-26 00:40:09,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 77 events. 23/77 cut-off events. For 62/75 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 249 event pairs, 3 based on Foata normal form. 8/83 useless extension candidates. Maximal degree in co-relation 246. Up to 48 conditions per place. [2021-03-26 00:40:09,783 INFO L142 LiptonReduction]: Number of co-enabled transitions 126 [2021-03-26 00:40:09,787 INFO L154 LiptonReduction]: Checked pairs total: 5 [2021-03-26 00:40:09,787 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:40:09,787 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-03-26 00:40:09,789 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 183 flow [2021-03-26 00:40:09,789 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 00:40:09,789 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:40:09,789 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:40:09,789 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 00:40:09,789 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:40:09,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:40:09,790 INFO L82 PathProgramCache]: Analyzing trace with hash -333452590, now seen corresponding path program 1 times [2021-03-26 00:40:09,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:40:09,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489261240] [2021-03-26 00:40:09,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:40:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:40:09,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:40:09,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:40:09,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:40:09,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:40:09,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:40:09,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:40:09,840 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 00:40:09,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489261240] [2021-03-26 00:40:09,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:40:09,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:40:09,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598959830] [2021-03-26 00:40:09,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:40:09,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:40:09,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:40:09,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:40:09,845 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 118 [2021-03-26 00:40:09,845 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 00:40:09,845 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:40:09,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 118 [2021-03-26 00:40:09,846 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:40:09,868 INFO L129 PetriNetUnfolder]: 30/99 cut-off events. [2021-03-26 00:40:09,868 INFO L130 PetriNetUnfolder]: For 109/136 co-relation queries the response was YES. [2021-03-26 00:40:09,868 INFO L84 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 99 events. 30/99 cut-off events. For 109/136 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 392 event pairs, 4 based on Foata normal form. 13/108 useless extension candidates. Maximal degree in co-relation 323. Up to 68 conditions per place. [2021-03-26 00:40:09,868 INFO L132 encePairwiseOnDemand]: 115/118 looper letters, 3 selfloop transitions, 2 changer transitions 4/31 dead transitions. [2021-03-26 00:40:09,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 31 transitions, 201 flow [2021-03-26 00:40:09,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:40:09,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:40:09,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2021-03-26 00:40:09,870 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8432203389830508 [2021-03-26 00:40:09,870 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 398 transitions. [2021-03-26 00:40:09,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 398 transitions. [2021-03-26 00:40:09,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:40:09,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 398 transitions. [2021-03-26 00:40:09,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 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 00:40:09,872 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 00:40:09,872 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 00:40:09,872 INFO L185 Difference]: Start difference. First operand has 41 places, 30 transitions, 183 flow. Second operand 4 states and 398 transitions. [2021-03-26 00:40:09,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 31 transitions, 201 flow [2021-03-26 00:40:09,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 31 transitions, 187 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-03-26 00:40:09,874 INFO L241 Difference]: Finished difference. Result has 44 places, 27 transitions, 160 flow [2021-03-26 00:40:09,874 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=44, PETRI_TRANSITIONS=27} [2021-03-26 00:40:09,874 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 12 predicate places. [2021-03-26 00:40:09,874 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:40:09,874 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 27 transitions, 160 flow [2021-03-26 00:40:09,874 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 27 transitions, 160 flow [2021-03-26 00:40:09,874 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 27 transitions, 160 flow [2021-03-26 00:40:09,880 INFO L129 PetriNetUnfolder]: 21/90 cut-off events. [2021-03-26 00:40:09,880 INFO L130 PetriNetUnfolder]: For 75/92 co-relation queries the response was YES. [2021-03-26 00:40:09,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 90 events. 21/90 cut-off events. For 75/92 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 396 event pairs, 4 based on Foata normal form. 5/92 useless extension candidates. Maximal degree in co-relation 253. Up to 51 conditions per place. [2021-03-26 00:40:09,889 INFO L142 LiptonReduction]: Number of co-enabled transitions 104 [2021-03-26 00:40:09,979 INFO L154 LiptonReduction]: Checked pairs total: 8 [2021-03-26 00:40:09,980 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 00:40:09,980 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 106 [2021-03-26 00:40:09,980 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 26 transitions, 161 flow [2021-03-26 00:40:09,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 00:40:09,981 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:40:09,981 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:40:09,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 00:40:09,981 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:40:09,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:40:09,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1388600034, now seen corresponding path program 2 times [2021-03-26 00:40:09,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:40:09,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339980811] [2021-03-26 00:40:09,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:40:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:40:10,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:40:10,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:40:10,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:40:10,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:40:10,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:40:10,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:40:10,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:40:10,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:40:10,010 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 00:40:10,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339980811] [2021-03-26 00:40:10,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:40:10,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 00:40:10,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106177600] [2021-03-26 00:40:10,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 00:40:10,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:40:10,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 00:40:10,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-26 00:40:10,012 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 120 [2021-03-26 00:40:10,012 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 26 transitions, 161 flow. Second operand has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:40:10,012 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:40:10,012 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 120 [2021-03-26 00:40:10,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:40:10,033 INFO L129 PetriNetUnfolder]: 15/64 cut-off events. [2021-03-26 00:40:10,033 INFO L130 PetriNetUnfolder]: For 173/258 co-relation queries the response was YES. [2021-03-26 00:40:10,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 64 events. 15/64 cut-off events. For 173/258 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 222 event pairs, 1 based on Foata normal form. 39/98 useless extension candidates. Maximal degree in co-relation 209. Up to 29 conditions per place. [2021-03-26 00:40:10,034 INFO L132 encePairwiseOnDemand]: 115/120 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2021-03-26 00:40:10,034 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 25 transitions, 165 flow [2021-03-26 00:40:10,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 00:40:10,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 00:40:10,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 490 transitions. [2021-03-26 00:40:10,036 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2021-03-26 00:40:10,036 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 490 transitions. [2021-03-26 00:40:10,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 490 transitions. [2021-03-26 00:40:10,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:40:10,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 490 transitions. [2021-03-26 00:40:10,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.0) internal successors, (490), 5 states have internal predecessors, (490), 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 00:40:10,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 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 00:40:10,038 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 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 00:40:10,038 INFO L185 Difference]: Start difference. First operand has 43 places, 26 transitions, 161 flow. Second operand 5 states and 490 transitions. [2021-03-26 00:40:10,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 25 transitions, 165 flow [2021-03-26 00:40:10,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 25 transitions, 146 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-03-26 00:40:10,039 INFO L241 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2021-03-26 00:40:10,039 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2021-03-26 00:40:10,039 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2021-03-26 00:40:10,039 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:40:10,039 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 0 transitions, 0 flow [2021-03-26 00:40:10,040 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 0 transitions, 0 flow [2021-03-26 00:40:10,040 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 00:40:10,040 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 00:40:10,040 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:40:10,040 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 00:40:10,040 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 00:40:10,040 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 00:40:10,040 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:40:10,040 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-26 00:40:10,041 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 00:40:10,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:40:10,041 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 00:40:10,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 12:40:10 BasicIcfg [2021-03-26 00:40:10,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 00:40:10,045 INFO L168 Benchmark]: Toolchain (without parser) took 3900.34 ms. Allocated memory was 255.9 MB in the beginning and 425.7 MB in the end (delta: 169.9 MB). Free memory was 235.8 MB in the beginning and 370.9 MB in the end (delta: -135.1 MB). Peak memory consumption was 34.5 MB. Max. memory is 16.0 GB. [2021-03-26 00:40:10,045 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 00:40:10,045 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.38 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 235.5 MB in the beginning and 317.4 MB in the end (delta: -81.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-26 00:40:10,045 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.82 ms. Allocated memory is still 354.4 MB. Free memory was 317.4 MB in the beginning and 315.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 00:40:10,045 INFO L168 Benchmark]: Boogie Preprocessor took 22.65 ms. Allocated memory is still 354.4 MB. Free memory was 315.2 MB in the beginning and 313.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 00:40:10,046 INFO L168 Benchmark]: RCFGBuilder took 367.77 ms. Allocated memory is still 354.4 MB. Free memory was 313.9 MB in the beginning and 291.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-26 00:40:10,046 INFO L168 Benchmark]: TraceAbstraction took 3097.92 ms. Allocated memory was 354.4 MB in the beginning and 425.7 MB in the end (delta: 71.3 MB). Free memory was 290.9 MB in the beginning and 370.9 MB in the end (delta: -80.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 00:40:10,047 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 381.38 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 235.5 MB in the beginning and 317.4 MB in the end (delta: -81.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.82 ms. Allocated memory is still 354.4 MB. Free memory was 317.4 MB in the beginning and 315.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 22.65 ms. Allocated memory is still 354.4 MB. Free memory was 315.2 MB in the beginning and 313.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 367.77 ms. Allocated memory is still 354.4 MB. Free memory was 313.9 MB in the beginning and 291.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3097.92 ms. Allocated memory was 354.4 MB in the beginning and 425.7 MB in the end (delta: 71.3 MB). Free memory was 290.9 MB in the beginning and 370.9 MB in the end (delta: -80.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1324.5ms, 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: 726, positive: 690, positive conditional: 690, 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: 570, positive: 551, positive conditional: 0, positive unconditional: 551, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 570, positive: 551, positive conditional: 0, positive unconditional: 551, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 570, positive: 541, positive conditional: 0, positive unconditional: 541, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 29, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 97, positive: 41, positive conditional: 0, positive unconditional: 41, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 726, positive: 139, positive conditional: 139, positive unconditional: 0, negative: 17, negative conditional: 17, negative unconditional: 0, unknown: 570, unknown conditional: 570, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 30, Positive conditional cache size: 30, 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: 294.0ms, 34 PlacesBefore, 30 PlacesAfterwards, 24 TransitionsBefore, 20 TransitionsAfterwards, 176 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 219 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 115, positive: 99, positive conditional: 99, positive unconditional: 0, negative: 16, negative conditional: 16, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 57, positive: 49, positive conditional: 11, positive unconditional: 38, negative: 8, negative conditional: 2, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 57, positive: 49, positive conditional: 11, positive unconditional: 38, negative: 8, negative conditional: 2, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 57, positive: 45, positive conditional: 0, positive unconditional: 45, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 8, negative conditional: 2, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 35, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 21, negative conditional: 6, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 115, positive: 50, positive conditional: 50, positive unconditional: 0, negative: 8, negative conditional: 8, negative unconditional: 0, unknown: 57, unknown conditional: 57, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 57, Positive cache size: 46, Positive conditional cache size: 46, 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: 383.2ms, 36 PlacesBefore, 35 PlacesAfterwards, 31 TransitionsBefore, 30 TransitionsAfterwards, 178 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 206 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 168, positive: 154, positive conditional: 154, positive unconditional: 0, negative: 14, negative conditional: 14, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 35, positive: 33, positive conditional: 16, positive unconditional: 17, 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: 35, positive: 33, positive conditional: 16, positive unconditional: 17, 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: 35, positive: 32, positive conditional: 0, positive unconditional: 32, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 12, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 7, negative conditional: 4, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 168, positive: 121, positive conditional: 121, positive unconditional: 0, negative: 12, negative conditional: 12, negative unconditional: 0, unknown: 35, unknown conditional: 35, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 92, Positive cache size: 79, Positive conditional cache size: 79, Positive unconditional cache size: 0, Negative cache size: 13, Negative conditional cache size: 13, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.2ms, 41 PlacesBefore, 41 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 122 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 27 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 26, positive: 23, positive conditional: 23, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 13, positive: 12, positive conditional: 7, positive unconditional: 5, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 13, positive: 12, positive conditional: 7, positive unconditional: 5, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 13, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 26, positive: 11, positive conditional: 11, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 13, unknown conditional: 13, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 105, Positive cache size: 91, Positive conditional cache size: 91, Positive unconditional cache size: 0, Negative cache size: 14, Negative conditional cache size: 14, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.0ms, 38 PlacesBefore, 38 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 126 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 47 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 42, positive: 37, positive conditional: 37, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 17, positive: 17, positive conditional: 12, positive unconditional: 5, 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: 17, positive: 17, positive conditional: 12, positive unconditional: 5, 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: 17, positive: 17, positive conditional: 0, positive unconditional: 17, 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: 42, positive: 20, positive conditional: 20, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 17, unknown conditional: 17, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 122, Positive cache size: 108, Positive conditional cache size: 108, Positive unconditional cache size: 0, Negative cache size: 14, Negative conditional cache size: 14, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.8ms, 40 PlacesBefore, 40 PlacesAfterwards, 27 TransitionsBefore, 27 TransitionsAfterwards, 138 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 6 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6, positive: 5, positive conditional: 5, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 1, 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: 2, positive: 2, positive conditional: 1, 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: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , 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: 6, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 124, Positive cache size: 110, Positive conditional cache size: 110, Positive unconditional cache size: 0, Negative cache size: 14, Negative conditional cache size: 14, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.2ms, 41 PlacesBefore, 41 PlacesAfterwards, 30 TransitionsBefore, 30 TransitionsAfterwards, 126 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 5 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 125, Positive cache size: 110, Positive conditional cache size: 110, Positive unconditional cache size: 0, Negative cache size: 15, Negative conditional cache size: 15, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 105.5ms, 44 PlacesBefore, 43 PlacesAfterwards, 27 TransitionsBefore, 26 TransitionsAfterwards, 104 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 8 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 8, 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: 8, positive: 8, positive conditional: 5, 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: 8, positive: 8, positive conditional: 5, 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: 8, positive: 8, positive conditional: 0, positive unconditional: 8, 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: 8, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 8, unknown conditional: 8, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 84, Positive cache size: 79, Positive conditional cache size: 79, Positive unconditional cache size: 0, Negative cache size: 5, Negative conditional cache size: 5, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.6ms, 41 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): 84, Positive cache size: 79, Positive conditional cache size: 79, Positive unconditional cache size: 0, Negative cache size: 5, Negative conditional cache size: 5, 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: 2.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3013.7ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 291.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1391.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 38 SDtfs, 23 SDslu, 25 SDs, 0 SdLazy, 71 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 56.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=183occurred in iteration=6, InterpolantAutomatonStates: 34, 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: 11.7ms SsaConstructionTime, 92.6ms SatisfiabilityAnalysisTime, 272.1ms InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 448 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...