/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 14:56:16,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 14:56:16,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 14:56:16,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 14:56:16,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 14:56:16,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 14:56:16,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 14:56:16,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 14:56:16,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 14:56:16,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 14:56:16,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 14:56:16,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 14:56:16,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 14:56:16,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 14:56:16,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 14:56:16,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 14:56:16,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 14:56:16,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 14:56:16,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 14:56:16,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 14:56:16,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 14:56:16,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 14:56:16,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 14:56:16,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 14:56:16,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 14:56:16,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 14:56:16,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 14:56:16,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 14:56:16,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 14:56:16,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 14:56:16,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 14:56:16,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 14:56:16,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 14:56:16,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 14:56:16,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 14:56:16,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 14:56:16,576 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-RepeatedSemanticLbe.epf [2021-03-25 14:56:16,604 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 14:56:16,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 14:56:16,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 14:56:16,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 14:56:16,608 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 14:56:16,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 14:56:16,608 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 14:56:16,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 14:56:16,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 14:56:16,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 14:56:16,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 14:56:16,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 14:56:16,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 14:56:16,610 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 14:56:16,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 14:56:16,610 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 14:56:16,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 14:56:16,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 14:56:16,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 14:56:16,611 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 14:56:16,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 14:56:16,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 14:56:16,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 14:56:16,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 14:56:16,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 14:56:16,611 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 14:56:16,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 14:56:16,612 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 14:56:16,612 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 14:56:16,612 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 14:56:16,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 14:56:16,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 14:56:16,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 14:56:16,949 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 14:56:16,950 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 14:56:16,951 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i [2021-03-25 14:56:17,021 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6438e3483/2704bd66d0f74c01a97935c29af61aa2/FLAG8a2bf0e45 [2021-03-25 14:56:17,557 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 14:56:17,558 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i [2021-03-25 14:56:17,586 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6438e3483/2704bd66d0f74c01a97935c29af61aa2/FLAG8a2bf0e45 [2021-03-25 14:56:17,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6438e3483/2704bd66d0f74c01a97935c29af61aa2 [2021-03-25 14:56:17,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 14:56:17,992 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 14:56:17,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 14:56:17,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 14:56:18,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 14:56:18,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 02:56:17" (1/1) ... [2021-03-25 14:56:18,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34d4b9d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:56:18, skipping insertion in model container [2021-03-25 14:56:18,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 02:56:17" (1/1) ... [2021-03-25 14:56:18,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 14:56:18,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 14:56:18,176 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/safe018_tso.opt.i[949,962] [2021-03-25 14:56:18,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 14:56:18,393 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 14:56:18,404 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/safe018_tso.opt.i[949,962] [2021-03-25 14:56:18,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 14:56:18,510 INFO L208 MainTranslator]: Completed translation [2021-03-25 14:56:18,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:56:18 WrapperNode [2021-03-25 14:56:18,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 14:56:18,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 14:56:18,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 14:56:18,513 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 14:56:18,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:56:18" (1/1) ... [2021-03-25 14:56:18,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:56:18" (1/1) ... [2021-03-25 14:56:18,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 14:56:18,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 14:56:18,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 14:56:18,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 14:56:18,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:56:18" (1/1) ... [2021-03-25 14:56:18,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:56:18" (1/1) ... [2021-03-25 14:56:18,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:56:18" (1/1) ... [2021-03-25 14:56:18,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:56:18" (1/1) ... [2021-03-25 14:56:18,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:56:18" (1/1) ... [2021-03-25 14:56:18,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:56:18" (1/1) ... [2021-03-25 14:56:18,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:56:18" (1/1) ... [2021-03-25 14:56:18,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 14:56:18,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 14:56:18,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 14:56:18,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 14:56:18,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:56:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 14:56:18,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 14:56:18,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 14:56:18,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 14:56:18,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 14:56:18,684 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 14:56:18,685 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 14:56:18,685 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 14:56:18,686 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 14:56:18,686 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 14:56:18,686 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 14:56:18,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 14:56:18,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 14:56:18,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 14:56:18,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 14:56:18,688 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 14:56:19,022 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 14:56:19,022 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 14:56:19,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 02:56:19 BoogieIcfgContainer [2021-03-25 14:56:19,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 14:56:19,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 14:56:19,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 14:56:19,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 14:56:19,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 02:56:17" (1/3) ... [2021-03-25 14:56:19,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c477fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 02:56:19, skipping insertion in model container [2021-03-25 14:56:19,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:56:18" (2/3) ... [2021-03-25 14:56:19,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c477fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 02:56:19, skipping insertion in model container [2021-03-25 14:56:19,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 02:56:19" (3/3) ... [2021-03-25 14:56:19,029 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_tso.opt.i [2021-03-25 14:56:19,033 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 14:56:19,036 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 14:56:19,036 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 14:56:19,058 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,058 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,058 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,058 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,059 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,059 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,059 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,059 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,060 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,060 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,060 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,060 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,061 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,061 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,062 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,062 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,062 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,062 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,062 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,062 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,063 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,063 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,063 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,063 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,064 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,065 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,065 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,065 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,066 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,066 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,067 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,067 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,068 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,069 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,069 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,070 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,071 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,074 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,075 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,075 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,081 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,081 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,081 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,081 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,082 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,083 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,083 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,083 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:56:19,084 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 14:56:19,099 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 14:56:19,117 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 14:56:19,117 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 14:56:19,117 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 14:56:19,117 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 14:56:19,117 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 14:56:19,117 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 14:56:19,117 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 14:56:19,118 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 14:56:19,127 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-03-25 14:56:19,158 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-03-25 14:56:19,158 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 14:56:19,161 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-25 14:56:19,161 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-03-25 14:56:19,165 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-03-25 14:56:19,166 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:56:19,177 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-25 14:56:19,179 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-25 14:56:19,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 59 transitions, 127 flow [2021-03-25 14:56:19,195 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-03-25 14:56:19,195 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 14:56:19,195 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-03-25 14:56:19,197 INFO L142 LiptonReduction]: Number of co-enabled transitions 804 [2021-03-25 14:56:20,704 INFO L154 LiptonReduction]: Checked pairs total: 984 [2021-03-25 14:56:20,704 INFO L156 LiptonReduction]: Total number of compositions: 39 [2021-03-25 14:56:20,707 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1542 [2021-03-25 14:56:20,717 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-25 14:56:20,718 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 14:56:20,718 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 14:56:20,718 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 14:56:20,719 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 14:56:20,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 14:56:20,724 INFO L82 PathProgramCache]: Analyzing trace with hash 933445281, now seen corresponding path program 1 times [2021-03-25 14:56:20,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 14:56:20,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674838130] [2021-03-25 14:56:20,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 14:56:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 14:56:20,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:56:20,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 14:56:20,942 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 14:56:20,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 14:56:20,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 14:56:20,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674838130] [2021-03-25 14:56:20,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 14:56:20,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 14:56:20,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948828971] [2021-03-25 14:56:20,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 14:56:20,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 14:56:20,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 14:56:20,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 14:56:20,984 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 113 [2021-03-25 14:56:20,990 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:20,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 14:56:20,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 113 [2021-03-25 14:56:20,992 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 14:56:21,017 INFO L129 PetriNetUnfolder]: 7/41 cut-off events. [2021-03-25 14:56:21,017 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 14:56:21,018 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 41 events. 7/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 91 event pairs, 5 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 57. Up to 18 conditions per place. [2021-03-25 14:56:21,019 INFO L132 encePairwiseOnDemand]: 109/113 looper letters, 4 selfloop transitions, 3 changer transitions 0/22 dead transitions. [2021-03-25 14:56:21,019 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 22 transitions, 67 flow [2021-03-25 14:56:21,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 14:56:21,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 14:56:21,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2021-03-25 14:56:21,029 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.855457227138643 [2021-03-25 14:56:21,030 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2021-03-25 14:56:21,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2021-03-25 14:56:21,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 14:56:21,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2021-03-25 14:56:21,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:21,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:21,041 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:21,043 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 49 flow. Second operand 3 states and 290 transitions. [2021-03-25 14:56:21,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 22 transitions, 67 flow [2021-03-25 14:56:21,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 22 transitions, 64 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 14:56:21,047 INFO L241 Difference]: Finished difference. Result has 30 places, 22 transitions, 65 flow [2021-03-25 14:56:21,048 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2021-03-25 14:56:21,049 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2021-03-25 14:56:21,049 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:56:21,049 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 22 transitions, 65 flow [2021-03-25 14:56:21,049 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 22 transitions, 65 flow [2021-03-25 14:56:21,050 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 22 transitions, 65 flow [2021-03-25 14:56:21,054 INFO L129 PetriNetUnfolder]: 3/30 cut-off events. [2021-03-25 14:56:21,054 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 14:56:21,054 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 30 events. 3/30 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 40 event pairs, 1 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 40. Up to 10 conditions per place. [2021-03-25 14:56:21,055 INFO L142 LiptonReduction]: Number of co-enabled transitions 132 [2021-03-25 14:56:21,439 INFO L154 LiptonReduction]: Checked pairs total: 280 [2021-03-25 14:56:21,439 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 14:56:21,439 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 390 [2021-03-25 14:56:21,442 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2021-03-25 14:56:21,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:21,442 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 14:56:21,442 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 14:56:21,442 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 14:56:21,442 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 14:56:21,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 14:56:21,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1127967768, now seen corresponding path program 1 times [2021-03-25 14:56:21,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 14:56:21,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100325209] [2021-03-25 14:56:21,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 14:56:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 14:56:21,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:56:21,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 14:56:21,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:56:21,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:56:21,549 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 14:56:21,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 14:56:21,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 14:56:21,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100325209] [2021-03-25 14:56:21,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 14:56:21,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 14:56:21,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127841051] [2021-03-25 14:56:21,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 14:56:21,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 14:56:21,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 14:56:21,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 14:56:21,565 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 116 [2021-03-25 14:56:21,566 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:21,566 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 14:56:21,566 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 116 [2021-03-25 14:56:21,566 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 14:56:21,613 INFO L129 PetriNetUnfolder]: 14/52 cut-off events. [2021-03-25 14:56:21,614 INFO L130 PetriNetUnfolder]: For 13/21 co-relation queries the response was YES. [2021-03-25 14:56:21,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 52 events. 14/52 cut-off events. For 13/21 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 139 event pairs, 1 based on Foata normal form. 4/55 useless extension candidates. Maximal degree in co-relation 104. Up to 17 conditions per place. [2021-03-25 14:56:21,615 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 7 selfloop transitions, 8 changer transitions 0/26 dead transitions. [2021-03-25 14:56:21,615 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 26 transitions, 109 flow [2021-03-25 14:56:21,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 14:56:21,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 14:56:21,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 466 transitions. [2021-03-25 14:56:21,645 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.803448275862069 [2021-03-25 14:56:21,645 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 466 transitions. [2021-03-25 14:56:21,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 466 transitions. [2021-03-25 14:56:21,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 14:56:21,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 466 transitions. [2021-03-25 14:56:21,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.2) internal successors, (466), 5 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:21,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:21,652 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:21,652 INFO L185 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 5 states and 466 transitions. [2021-03-25 14:56:21,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 26 transitions, 109 flow [2021-03-25 14:56:21,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 14:56:21,654 INFO L241 Difference]: Finished difference. Result has 33 places, 24 transitions, 111 flow [2021-03-25 14:56:21,654 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=111, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2021-03-25 14:56:21,655 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2021-03-25 14:56:21,655 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:56:21,655 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 24 transitions, 111 flow [2021-03-25 14:56:21,656 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 24 transitions, 111 flow [2021-03-25 14:56:21,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 24 transitions, 111 flow [2021-03-25 14:56:21,663 INFO L129 PetriNetUnfolder]: 10/45 cut-off events. [2021-03-25 14:56:21,663 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2021-03-25 14:56:21,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 45 events. 10/45 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 124 event pairs, 3 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 111. Up to 20 conditions per place. [2021-03-25 14:56:21,664 INFO L142 LiptonReduction]: Number of co-enabled transitions 138 [2021-03-25 14:56:21,810 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-25 14:56:22,001 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-25 14:56:22,073 INFO L154 LiptonReduction]: Checked pairs total: 122 [2021-03-25 14:56:22,073 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 14:56:22,073 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 418 [2021-03-25 14:56:22,074 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 109 flow [2021-03-25 14:56:22,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:22,074 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 14:56:22,074 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 14:56:22,075 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 14:56:22,075 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 14:56:22,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 14:56:22,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1330289015, now seen corresponding path program 1 times [2021-03-25 14:56:22,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 14:56:22,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380968335] [2021-03-25 14:56:22,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 14:56:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 14:56:22,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:56:22,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:56:22,146 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 14:56:22,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 14:56:22,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 14:56:22,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380968335] [2021-03-25 14:56:22,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 14:56:22,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 14:56:22,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167842386] [2021-03-25 14:56:22,160 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 14:56:22,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 14:56:22,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 14:56:22,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 14:56:22,167 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 117 [2021-03-25 14:56:22,167 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 109 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) [2021-03-25 14:56:22,168 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 14:56:22,169 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 117 [2021-03-25 14:56:22,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 14:56:22,188 INFO L129 PetriNetUnfolder]: 6/35 cut-off events. [2021-03-25 14:56:22,188 INFO L130 PetriNetUnfolder]: For 42/57 co-relation queries the response was YES. [2021-03-25 14:56:22,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 35 events. 6/35 cut-off events. For 42/57 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 81 event pairs, 1 based on Foata normal form. 4/39 useless extension candidates. Maximal degree in co-relation 97. Up to 15 conditions per place. [2021-03-25 14:56:22,189 INFO L132 encePairwiseOnDemand]: 114/117 looper letters, 7 selfloop transitions, 4 changer transitions 0/23 dead transitions. [2021-03-25 14:56:22,189 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 23 transitions, 131 flow [2021-03-25 14:56:22,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 14:56:22,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 14:56:22,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2021-03-25 14:56:22,190 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8233618233618234 [2021-03-25 14:56:22,190 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2021-03-25 14:56:22,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2021-03-25 14:56:22,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 14:56:22,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2021-03-25 14:56:22,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:22,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:22,193 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:22,193 INFO L185 Difference]: Start difference. First operand has 32 places, 23 transitions, 109 flow. Second operand 3 states and 289 transitions. [2021-03-25 14:56:22,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 23 transitions, 131 flow [2021-03-25 14:56:22,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 23 transitions, 128 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 14:56:22,196 INFO L241 Difference]: Finished difference. Result has 34 places, 23 transitions, 120 flow [2021-03-25 14:56:22,196 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2021-03-25 14:56:22,196 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2021-03-25 14:56:22,196 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:56:22,197 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 23 transitions, 120 flow [2021-03-25 14:56:22,197 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 23 transitions, 120 flow [2021-03-25 14:56:22,198 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 23 transitions, 120 flow [2021-03-25 14:56:22,208 INFO L129 PetriNetUnfolder]: 6/35 cut-off events. [2021-03-25 14:56:22,208 INFO L130 PetriNetUnfolder]: For 27/29 co-relation queries the response was YES. [2021-03-25 14:56:22,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 35 events. 6/35 cut-off events. For 27/29 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 76 event pairs, 1 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 86. Up to 13 conditions per place. [2021-03-25 14:56:22,210 INFO L142 LiptonReduction]: Number of co-enabled transitions 138 [2021-03-25 14:56:22,212 INFO L154 LiptonReduction]: Checked pairs total: 82 [2021-03-25 14:56:22,212 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 14:56:22,212 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16 [2021-03-25 14:56:22,216 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 120 flow [2021-03-25 14:56:22,217 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) [2021-03-25 14:56:22,217 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 14:56:22,217 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 14:56:22,217 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 14:56:22,217 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 14:56:22,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 14:56:22,218 INFO L82 PathProgramCache]: Analyzing trace with hash 722497835, now seen corresponding path program 1 times [2021-03-25 14:56:22,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 14:56:22,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062801643] [2021-03-25 14:56:22,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 14:56:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 14:56:22,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:56:22,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:56:22,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 14:56:22,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062801643] [2021-03-25 14:56:22,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 14:56:22,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 14:56:22,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467852707] [2021-03-25 14:56:22,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 14:56:22,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 14:56:22,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 14:56:22,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 14:56:22,268 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 117 [2021-03-25 14:56:22,268 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:22,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 14:56:22,268 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 117 [2021-03-25 14:56:22,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 14:56:22,279 INFO L129 PetriNetUnfolder]: 5/31 cut-off events. [2021-03-25 14:56:22,279 INFO L130 PetriNetUnfolder]: For 39/42 co-relation queries the response was YES. [2021-03-25 14:56:22,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 31 events. 5/31 cut-off events. For 39/42 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 68 event pairs, 0 based on Foata normal form. 2/33 useless extension candidates. Maximal degree in co-relation 80. Up to 11 conditions per place. [2021-03-25 14:56:22,279 INFO L132 encePairwiseOnDemand]: 114/117 looper letters, 1 selfloop transitions, 4 changer transitions 0/23 dead transitions. [2021-03-25 14:56:22,280 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 23 transitions, 130 flow [2021-03-25 14:56:22,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 14:56:22,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 14:56:22,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2021-03-25 14:56:22,281 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8660968660968661 [2021-03-25 14:56:22,281 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2021-03-25 14:56:22,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2021-03-25 14:56:22,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 14:56:22,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2021-03-25 14:56:22,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:22,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:22,283 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:22,283 INFO L185 Difference]: Start difference. First operand has 34 places, 23 transitions, 120 flow. Second operand 3 states and 304 transitions. [2021-03-25 14:56:22,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 23 transitions, 130 flow [2021-03-25 14:56:22,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 23 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 14:56:22,285 INFO L241 Difference]: Finished difference. Result has 35 places, 23 transitions, 126 flow [2021-03-25 14:56:22,285 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2021-03-25 14:56:22,285 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2021-03-25 14:56:22,285 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:56:22,286 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 23 transitions, 126 flow [2021-03-25 14:56:22,286 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 23 transitions, 126 flow [2021-03-25 14:56:22,286 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 23 transitions, 126 flow [2021-03-25 14:56:22,289 INFO L129 PetriNetUnfolder]: 5/31 cut-off events. [2021-03-25 14:56:22,290 INFO L130 PetriNetUnfolder]: For 25/26 co-relation queries the response was YES. [2021-03-25 14:56:22,290 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 31 events. 5/31 cut-off events. For 25/26 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 65 event pairs, 0 based on Foata normal form. 1/32 useless extension candidates. Maximal degree in co-relation 80. Up to 11 conditions per place. [2021-03-25 14:56:22,291 INFO L142 LiptonReduction]: Number of co-enabled transitions 138 [2021-03-25 14:56:22,295 INFO L154 LiptonReduction]: Checked pairs total: 67 [2021-03-25 14:56:22,296 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 14:56:22,296 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-03-25 14:56:22,297 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 126 flow [2021-03-25 14:56:22,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:22,298 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 14:56:22,298 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 14:56:22,298 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 14:56:22,298 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 14:56:22,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 14:56:22,299 INFO L82 PathProgramCache]: Analyzing trace with hash 401978809, now seen corresponding path program 1 times [2021-03-25 14:56:22,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 14:56:22,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080439844] [2021-03-25 14:56:22,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 14:56:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 14:56:22,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:56:22,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:56:22,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:56:22,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:56:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 14:56:22,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080439844] [2021-03-25 14:56:22,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 14:56:22,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 14:56:22,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888216749] [2021-03-25 14:56:22,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 14:56:22,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 14:56:22,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 14:56:22,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 14:56:22,361 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 117 [2021-03-25 14:56:22,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 126 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) [2021-03-25 14:56:22,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 14:56:22,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 117 [2021-03-25 14:56:22,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 14:56:22,382 INFO L129 PetriNetUnfolder]: 12/60 cut-off events. [2021-03-25 14:56:22,382 INFO L130 PetriNetUnfolder]: For 133/142 co-relation queries the response was YES. [2021-03-25 14:56:22,382 INFO L84 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 60 events. 12/60 cut-off events. For 133/142 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 222 event pairs, 0 based on Foata normal form. 8/67 useless extension candidates. Maximal degree in co-relation 172. Up to 20 conditions per place. [2021-03-25 14:56:22,383 INFO L132 encePairwiseOnDemand]: 113/117 looper letters, 6 selfloop transitions, 5 changer transitions 7/32 dead transitions. [2021-03-25 14:56:22,383 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 225 flow [2021-03-25 14:56:22,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 14:56:22,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 14:56:22,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 386 transitions. [2021-03-25 14:56:22,385 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8247863247863247 [2021-03-25 14:56:22,385 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 386 transitions. [2021-03-25 14:56:22,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 386 transitions. [2021-03-25 14:56:22,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 14:56:22,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 386 transitions. [2021-03-25 14:56:22,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:22,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:22,387 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:22,388 INFO L185 Difference]: Start difference. First operand has 35 places, 23 transitions, 126 flow. Second operand 4 states and 386 transitions. [2021-03-25 14:56:22,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 225 flow [2021-03-25 14:56:22,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 211 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 14:56:22,390 INFO L241 Difference]: Finished difference. Result has 38 places, 23 transitions, 138 flow [2021-03-25 14:56:22,390 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2021-03-25 14:56:22,390 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 8 predicate places. [2021-03-25 14:56:22,390 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:56:22,390 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 23 transitions, 138 flow [2021-03-25 14:56:22,390 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 23 transitions, 138 flow [2021-03-25 14:56:22,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 23 transitions, 138 flow [2021-03-25 14:56:22,393 INFO L129 PetriNetUnfolder]: 5/31 cut-off events. [2021-03-25 14:56:22,394 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-25 14:56:22,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 31 events. 5/31 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 63 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 89. Up to 11 conditions per place. [2021-03-25 14:56:22,394 INFO L142 LiptonReduction]: Number of co-enabled transitions 116 [2021-03-25 14:56:22,395 INFO L154 LiptonReduction]: Checked pairs total: 50 [2021-03-25 14:56:22,395 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 14:56:22,396 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-25 14:56:22,396 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 138 flow [2021-03-25 14:56:22,397 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) [2021-03-25 14:56:22,397 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 14:56:22,397 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 14:56:22,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 14:56:22,397 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 14:56:22,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 14:56:22,397 INFO L82 PathProgramCache]: Analyzing trace with hash -853609968, now seen corresponding path program 1 times [2021-03-25 14:56:22,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 14:56:22,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051651608] [2021-03-25 14:56:22,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 14:56:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 14:56:22,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:56:22,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:56:22,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:56:22,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:56:22,425 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 14:56:22,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 14:56:22,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 14:56:22,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051651608] [2021-03-25 14:56:22,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 14:56:22,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 14:56:22,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145660161] [2021-03-25 14:56:22,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 14:56:22,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 14:56:22,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 14:56:22,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 14:56:22,434 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 117 [2021-03-25 14:56:22,435 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:22,435 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 14:56:22,435 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 117 [2021-03-25 14:56:22,435 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 14:56:22,455 INFO L129 PetriNetUnfolder]: 5/35 cut-off events. [2021-03-25 14:56:22,455 INFO L130 PetriNetUnfolder]: For 138/144 co-relation queries the response was YES. [2021-03-25 14:56:22,456 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 35 events. 5/35 cut-off events. For 138/144 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 1 based on Foata normal form. 4/39 useless extension candidates. Maximal degree in co-relation 116. Up to 13 conditions per place. [2021-03-25 14:56:22,456 INFO L132 encePairwiseOnDemand]: 113/117 looper letters, 3 selfloop transitions, 3 changer transitions 9/25 dead transitions. [2021-03-25 14:56:22,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 25 transitions, 180 flow [2021-03-25 14:56:22,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 14:56:22,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 14:56:22,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2021-03-25 14:56:22,458 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7927350427350427 [2021-03-25 14:56:22,458 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2021-03-25 14:56:22,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2021-03-25 14:56:22,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 14:56:22,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2021-03-25 14:56:22,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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) [2021-03-25 14:56:22,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:22,460 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:22,460 INFO L185 Difference]: Start difference. First operand has 38 places, 23 transitions, 138 flow. Second operand 4 states and 371 transitions. [2021-03-25 14:56:22,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 25 transitions, 180 flow [2021-03-25 14:56:22,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 25 transitions, 164 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-25 14:56:22,463 INFO L241 Difference]: Finished difference. Result has 39 places, 16 transitions, 88 flow [2021-03-25 14:56:22,463 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=39, PETRI_TRANSITIONS=16} [2021-03-25 14:56:22,463 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2021-03-25 14:56:22,463 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:56:22,463 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 16 transitions, 88 flow [2021-03-25 14:56:22,463 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 16 transitions, 88 flow [2021-03-25 14:56:22,464 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 16 transitions, 88 flow [2021-03-25 14:56:22,466 INFO L129 PetriNetUnfolder]: 1/18 cut-off events. [2021-03-25 14:56:22,466 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2021-03-25 14:56:22,466 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 18 events. 1/18 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 1 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 51. Up to 6 conditions per place. [2021-03-25 14:56:22,466 INFO L142 LiptonReduction]: Number of co-enabled transitions 48 [2021-03-25 14:56:22,487 INFO L154 LiptonReduction]: Checked pairs total: 35 [2021-03-25 14:56:22,487 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 14:56:22,487 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 24 [2021-03-25 14:56:22,488 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 15 transitions, 84 flow [2021-03-25 14:56:22,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:22,488 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 14:56:22,488 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 14:56:22,488 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 14:56:22,489 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 14:56:22,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 14:56:22,489 INFO L82 PathProgramCache]: Analyzing trace with hash 914227181, now seen corresponding path program 1 times [2021-03-25 14:56:22,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 14:56:22,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401583898] [2021-03-25 14:56:22,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 14:56:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 14:56:22,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:56:22,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:56:22,523 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 14:56:22,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 14:56:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 14:56:22,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401583898] [2021-03-25 14:56:22,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 14:56:22,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 14:56:22,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875092871] [2021-03-25 14:56:22,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 14:56:22,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 14:56:22,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 14:56:22,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 14:56:22,532 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 118 [2021-03-25 14:56:22,532 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 15 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:22,532 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 14:56:22,532 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 118 [2021-03-25 14:56:22,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 14:56:22,566 INFO L129 PetriNetUnfolder]: 31/73 cut-off events. [2021-03-25 14:56:22,566 INFO L130 PetriNetUnfolder]: For 561/601 co-relation queries the response was YES. [2021-03-25 14:56:22,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 73 events. 31/73 cut-off events. For 561/601 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 233 event pairs, 15 based on Foata normal form. 12/78 useless extension candidates. Maximal degree in co-relation 225. Up to 48 conditions per place. [2021-03-25 14:56:22,567 INFO L132 encePairwiseOnDemand]: 112/118 looper letters, 5 selfloop transitions, 4 changer transitions 7/25 dead transitions. [2021-03-25 14:56:22,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 25 transitions, 136 flow [2021-03-25 14:56:22,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 14:56:22,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 14:56:22,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 468 transitions. [2021-03-25 14:56:22,570 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7932203389830509 [2021-03-25 14:56:22,570 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 468 transitions. [2021-03-25 14:56:22,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 468 transitions. [2021-03-25 14:56:22,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 14:56:22,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 468 transitions. [2021-03-25 14:56:22,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.6) internal successors, (468), 5 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:22,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:22,573 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:22,573 INFO L185 Difference]: Start difference. First operand has 36 places, 15 transitions, 84 flow. Second operand 5 states and 468 transitions. [2021-03-25 14:56:22,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 25 transitions, 136 flow [2021-03-25 14:56:22,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 100 flow, removed 9 selfloop flow, removed 11 redundant places. [2021-03-25 14:56:22,575 INFO L241 Difference]: Finished difference. Result has 32 places, 18 transitions, 84 flow [2021-03-25 14:56:22,575 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=84, PETRI_PLACES=32, PETRI_TRANSITIONS=18} [2021-03-25 14:56:22,575 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2021-03-25 14:56:22,575 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:56:22,576 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 18 transitions, 84 flow [2021-03-25 14:56:22,576 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 18 transitions, 84 flow [2021-03-25 14:56:22,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 18 transitions, 84 flow [2021-03-25 14:56:22,582 INFO L129 PetriNetUnfolder]: 27/61 cut-off events. [2021-03-25 14:56:22,582 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2021-03-25 14:56:22,582 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 61 events. 27/61 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 169 event pairs, 14 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 181. Up to 40 conditions per place. [2021-03-25 14:56:22,583 INFO L142 LiptonReduction]: Number of co-enabled transitions 32 [2021-03-25 14:56:22,672 INFO L154 LiptonReduction]: Checked pairs total: 14 [2021-03-25 14:56:22,672 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 14:56:22,672 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 97 [2021-03-25 14:56:22,679 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 18 transitions, 88 flow [2021-03-25 14:56:22,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:22,679 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 14:56:22,680 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 14:56:22,680 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 14:56:22,680 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 14:56:22,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 14:56:22,680 INFO L82 PathProgramCache]: Analyzing trace with hash 937175861, now seen corresponding path program 1 times [2021-03-25 14:56:22,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 14:56:22,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397943613] [2021-03-25 14:56:22,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 14:56:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 14:56:22,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:56:22,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:56:22,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:56:22,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:56:22,724 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 14:56:22,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 14:56:22,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 14:56:22,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397943613] [2021-03-25 14:56:22,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 14:56:22,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 14:56:22,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791173633] [2021-03-25 14:56:22,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 14:56:22,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 14:56:22,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 14:56:22,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 14:56:22,734 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 121 [2021-03-25 14:56:22,734 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 18 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:22,734 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 14:56:22,734 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 121 [2021-03-25 14:56:22,734 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 14:56:22,776 INFO L129 PetriNetUnfolder]: 17/53 cut-off events. [2021-03-25 14:56:22,776 INFO L130 PetriNetUnfolder]: For 171/209 co-relation queries the response was YES. [2021-03-25 14:56:22,776 INFO L84 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 53 events. 17/53 cut-off events. For 171/209 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 146 event pairs, 3 based on Foata normal form. 17/68 useless extension candidates. Maximal degree in co-relation 188. Up to 35 conditions per place. [2021-03-25 14:56:22,777 INFO L132 encePairwiseOnDemand]: 113/121 looper letters, 5 selfloop transitions, 7 changer transitions 7/28 dead transitions. [2021-03-25 14:56:22,777 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 184 flow [2021-03-25 14:56:22,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 14:56:22,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 14:56:22,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 561 transitions. [2021-03-25 14:56:22,780 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2021-03-25 14:56:22,781 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 561 transitions. [2021-03-25 14:56:22,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 561 transitions. [2021-03-25 14:56:22,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 14:56:22,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 561 transitions. [2021-03-25 14:56:22,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:22,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:22,784 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:22,784 INFO L185 Difference]: Start difference. First operand has 30 places, 18 transitions, 88 flow. Second operand 6 states and 561 transitions. [2021-03-25 14:56:22,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 184 flow [2021-03-25 14:56:22,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 176 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-25 14:56:22,785 INFO L241 Difference]: Finished difference. Result has 36 places, 21 transitions, 136 flow [2021-03-25 14:56:22,786 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=136, PETRI_PLACES=36, PETRI_TRANSITIONS=21} [2021-03-25 14:56:22,786 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2021-03-25 14:56:22,786 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:56:22,786 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 21 transitions, 136 flow [2021-03-25 14:56:22,786 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 21 transitions, 136 flow [2021-03-25 14:56:22,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 21 transitions, 136 flow [2021-03-25 14:56:22,791 INFO L129 PetriNetUnfolder]: 12/41 cut-off events. [2021-03-25 14:56:22,791 INFO L130 PetriNetUnfolder]: For 102/110 co-relation queries the response was YES. [2021-03-25 14:56:22,791 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 41 events. 12/41 cut-off events. For 102/110 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 81 event pairs, 3 based on Foata normal form. 2/41 useless extension candidates. Maximal degree in co-relation 154. Up to 23 conditions per place. [2021-03-25 14:56:22,792 INFO L142 LiptonReduction]: Number of co-enabled transitions 24 [2021-03-25 14:56:22,908 INFO L154 LiptonReduction]: Checked pairs total: 9 [2021-03-25 14:56:22,908 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 14:56:22,908 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 122 [2021-03-25 14:56:22,909 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 21 transitions, 142 flow [2021-03-25 14:56:22,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:22,910 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 14:56:22,910 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 14:56:22,910 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 14:56:22,910 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 14:56:22,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 14:56:22,910 INFO L82 PathProgramCache]: Analyzing trace with hash 938075357, now seen corresponding path program 1 times [2021-03-25 14:56:22,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 14:56:22,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354669033] [2021-03-25 14:56:22,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 14:56:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 14:56:22,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:56:22,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 14:56:22,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:56:22,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:56:22,971 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 14:56:22,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 14:56:22,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 14:56:22,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354669033] [2021-03-25 14:56:22,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 14:56:22,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 14:56:22,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848267366] [2021-03-25 14:56:22,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 14:56:22,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 14:56:22,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 14:56:22,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 14:56:22,984 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-03-25 14:56:22,985 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 21 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:22,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 14:56:22,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-03-25 14:56:22,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 14:56:23,016 INFO L129 PetriNetUnfolder]: 8/37 cut-off events. [2021-03-25 14:56:23,016 INFO L130 PetriNetUnfolder]: For 138/153 co-relation queries the response was YES. [2021-03-25 14:56:23,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 37 events. 8/37 cut-off events. For 138/153 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 82 event pairs, 1 based on Foata normal form. 7/43 useless extension candidates. Maximal degree in co-relation 146. Up to 21 conditions per place. [2021-03-25 14:56:23,016 INFO L132 encePairwiseOnDemand]: 115/124 looper letters, 2 selfloop transitions, 6 changer transitions 4/21 dead transitions. [2021-03-25 14:56:23,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 21 transitions, 162 flow [2021-03-25 14:56:23,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 14:56:23,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 14:56:23,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 456 transitions. [2021-03-25 14:56:23,020 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7354838709677419 [2021-03-25 14:56:23,020 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 456 transitions. [2021-03-25 14:56:23,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 456 transitions. [2021-03-25 14:56:23,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 14:56:23,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 456 transitions. [2021-03-25 14:56:23,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:23,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:23,022 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:23,022 INFO L185 Difference]: Start difference. First operand has 34 places, 21 transitions, 142 flow. Second operand 5 states and 456 transitions. [2021-03-25 14:56:23,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 21 transitions, 162 flow [2021-03-25 14:56:23,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 21 transitions, 130 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-03-25 14:56:23,024 INFO L241 Difference]: Finished difference. Result has 35 places, 17 transitions, 101 flow [2021-03-25 14:56:23,024 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=35, PETRI_TRANSITIONS=17} [2021-03-25 14:56:23,024 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2021-03-25 14:56:23,024 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:56:23,024 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 17 transitions, 101 flow [2021-03-25 14:56:23,025 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 17 transitions, 101 flow [2021-03-25 14:56:23,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 17 transitions, 101 flow [2021-03-25 14:56:23,027 INFO L129 PetriNetUnfolder]: 2/26 cut-off events. [2021-03-25 14:56:23,027 INFO L130 PetriNetUnfolder]: For 43/50 co-relation queries the response was YES. [2021-03-25 14:56:23,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 26 events. 2/26 cut-off events. For 43/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 1 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 78. Up to 9 conditions per place. [2021-03-25 14:56:23,028 INFO L142 LiptonReduction]: Number of co-enabled transitions 20 [2021-03-25 14:56:23,146 INFO L154 LiptonReduction]: Checked pairs total: 7 [2021-03-25 14:56:23,146 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 14:56:23,146 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 122 [2021-03-25 14:56:23,147 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 14 transitions, 95 flow [2021-03-25 14:56:23,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:23,147 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 14:56:23,147 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 14:56:23,147 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 14:56:23,147 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 14:56:23,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 14:56:23,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1682365865, now seen corresponding path program 1 times [2021-03-25 14:56:23,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 14:56:23,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445457062] [2021-03-25 14:56:23,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 14:56:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 14:56:23,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:56:23,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:56:23,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:56:23,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:56:23,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:56:23,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:56:23,191 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 14:56:23,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 14:56:23,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 14:56:23,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445457062] [2021-03-25 14:56:23,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 14:56:23,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 14:56:23,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946269467] [2021-03-25 14:56:23,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 14:56:23,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 14:56:23,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 14:56:23,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 14:56:23,198 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 127 [2021-03-25 14:56:23,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 14 transitions, 95 flow. Second operand has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:23,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 14:56:23,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 127 [2021-03-25 14:56:23,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 14:56:23,225 INFO L129 PetriNetUnfolder]: 1/14 cut-off events. [2021-03-25 14:56:23,225 INFO L130 PetriNetUnfolder]: For 72/80 co-relation queries the response was YES. [2021-03-25 14:56:23,225 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 14 events. 1/14 cut-off events. For 72/80 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs, 0 based on Foata normal form. 3/17 useless extension candidates. Maximal degree in co-relation 46. Up to 4 conditions per place. [2021-03-25 14:56:23,225 INFO L132 encePairwiseOnDemand]: 120/127 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2021-03-25 14:56:23,225 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 13 transitions, 93 flow [2021-03-25 14:56:23,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 14:56:23,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 14:56:23,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 457 transitions. [2021-03-25 14:56:23,227 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7196850393700788 [2021-03-25 14:56:23,227 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 457 transitions. [2021-03-25 14:56:23,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 457 transitions. [2021-03-25 14:56:23,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 14:56:23,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 457 transitions. [2021-03-25 14:56:23,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.4) internal successors, (457), 5 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:23,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:23,229 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:23,230 INFO L185 Difference]: Start difference. First operand has 32 places, 14 transitions, 95 flow. Second operand 5 states and 457 transitions. [2021-03-25 14:56:23,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 13 transitions, 93 flow [2021-03-25 14:56:23,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 13 transitions, 62 flow, removed 3 selfloop flow, removed 9 redundant places. [2021-03-25 14:56:23,230 INFO L241 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2021-03-25 14:56:23,230 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2021-03-25 14:56:23,230 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, -4 predicate places. [2021-03-25 14:56:23,231 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:56:23,231 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 26 places, 0 transitions, 0 flow [2021-03-25 14:56:23,231 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 26 places, 0 transitions, 0 flow [2021-03-25 14:56:23,231 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 14:56:23,231 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 14:56:23,231 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 14:56:23,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 14:56:23,231 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 14:56:23,232 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 14:56:23,232 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 14:56:23,232 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 14:56:23,232 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 14:56:23,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:56:23,232 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 14:56:23,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 02:56:23 BasicIcfg [2021-03-25 14:56:23,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 14:56:23,238 INFO L168 Benchmark]: Toolchain (without parser) took 5245.31 ms. Allocated memory was 343.9 MB in the beginning and 413.1 MB in the end (delta: 69.2 MB). Free memory was 306.6 MB in the beginning and 316.4 MB in the end (delta: -9.7 MB). Peak memory consumption was 60.6 MB. Max. memory is 16.0 GB. [2021-03-25 14:56:23,238 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 343.9 MB. Free memory was 324.8 MB in the beginning and 324.7 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 14:56:23,238 INFO L168 Benchmark]: CACSL2BoogieTranslator took 518.21 ms. Allocated memory is still 343.9 MB. Free memory was 306.5 MB in the beginning and 308.4 MB in the end (delta: -1.9 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. [2021-03-25 14:56:23,239 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.99 ms. Allocated memory is still 343.9 MB. Free memory was 308.4 MB in the beginning and 305.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 14:56:23,239 INFO L168 Benchmark]: Boogie Preprocessor took 30.47 ms. Allocated memory is still 343.9 MB. Free memory was 305.5 MB in the beginning and 304.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 14:56:23,239 INFO L168 Benchmark]: RCFGBuilder took 419.39 ms. Allocated memory is still 343.9 MB. Free memory was 304.2 MB in the beginning and 280.1 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-25 14:56:23,239 INFO L168 Benchmark]: TraceAbstraction took 4211.81 ms. Allocated memory was 343.9 MB in the beginning and 413.1 MB in the end (delta: 69.2 MB). Free memory was 279.0 MB in the beginning and 316.4 MB in the end (delta: -37.3 MB). Peak memory consumption was 34.0 MB. Max. memory is 16.0 GB. [2021-03-25 14:56:23,245 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 343.9 MB. Free memory was 324.8 MB in the beginning and 324.7 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 518.21 ms. Allocated memory is still 343.9 MB. Free memory was 306.5 MB in the beginning and 308.4 MB in the end (delta: -1.9 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 59.99 ms. Allocated memory is still 343.9 MB. Free memory was 308.4 MB in the beginning and 305.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 30.47 ms. Allocated memory is still 343.9 MB. Free memory was 305.5 MB in the beginning and 304.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 419.39 ms. Allocated memory is still 343.9 MB. Free memory was 304.2 MB in the beginning and 280.1 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4211.81 ms. Allocated memory was 343.9 MB in the beginning and 413.1 MB in the end (delta: 69.2 MB). Free memory was 279.0 MB in the beginning and 316.4 MB in the end (delta: -37.3 MB). Peak memory consumption was 34.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1525.1ms, 68 PlacesBefore, 30 PlacesAfterwards, 59 TransitionsBefore, 20 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 4 FixpointIterations, 15 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 39 TotalNumberOfCompositions, 984 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 522, positive: 490, positive conditional: 0, positive unconditional: 490, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 454, positive: 434, positive conditional: 0, positive unconditional: 434, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 454, positive: 434, positive conditional: 0, positive unconditional: 434, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 454, positive: 432, positive conditional: 0, positive unconditional: 432, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 22, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 77, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 66, negative conditional: 0, negative unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 522, positive: 56, positive conditional: 0, positive unconditional: 56, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 454, unknown conditional: 0, unknown unconditional: 454] , Statistics on independence cache: Total cache size (in pairs): 25, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 389.8ms, 30 PlacesBefore, 27 PlacesAfterwards, 22 TransitionsBefore, 19 TransitionsAfterwards, 132 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 280 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 159, positive: 131, positive conditional: 0, positive unconditional: 131, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 32, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 32, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 32, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 10, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 41, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 159, positive: 103, positive conditional: 0, positive unconditional: 103, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 32, unknown conditional: 0, unknown unconditional: 32] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 416.7ms, 33 PlacesBefore, 32 PlacesAfterwards, 24 TransitionsBefore, 23 TransitionsAfterwards, 138 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 122 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 80, positive: 70, positive conditional: 0, positive unconditional: 70, negative: 10, negative conditional: 0, negative unconditional: 10, 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: 80, positive: 70, positive conditional: 0, positive unconditional: 70, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14.3ms, 34 PlacesBefore, 34 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 138 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 82 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 56, positive: 50, positive conditional: 0, positive unconditional: 50, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 56, positive: 49, positive conditional: 0, positive unconditional: 49, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 49, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.8ms, 35 PlacesBefore, 35 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 138 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 67 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 50, positive: 45, positive conditional: 0, positive unconditional: 45, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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: 50, positive: 45, positive conditional: 0, positive unconditional: 45, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 49, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1ms, 38 PlacesBefore, 38 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 116 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 50 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 43, positive: 39, positive conditional: 0, positive unconditional: 39, negative: 4, negative conditional: 0, negative unconditional: 4, 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: 43, positive: 39, positive conditional: 0, positive unconditional: 39, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 49, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 23.6ms, 39 PlacesBefore, 36 PlacesAfterwards, 16 TransitionsBefore, 15 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 35 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 30, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , 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: 30, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 96.5ms, 32 PlacesBefore, 30 PlacesAfterwards, 18 TransitionsBefore, 18 TransitionsAfterwards, 32 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 14 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14, positive: 14, positive conditional: 0, positive unconditional: 14, 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: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 14, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 17, Positive conditional cache size: 0, Positive unconditional cache size: 17, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 121.5ms, 36 PlacesBefore, 34 PlacesAfterwards, 21 TransitionsBefore, 21 TransitionsAfterwards, 24 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 9 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 0, positive unconditional: 9, 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: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.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] , 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: 9, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 16, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 121.4ms, 35 PlacesBefore, 32 PlacesAfterwards, 17 TransitionsBefore, 14 TransitionsAfterwards, 20 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 7 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , 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: 7, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.6ms, 26 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): 5, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4120.6ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 443.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1595.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 42 SDtfs, 33 SDslu, 18 SDs, 0 SdLazy, 114 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 87.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 118.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=8, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.7ms SsaConstructionTime, 171.6ms SatisfiabilityAnalysisTime, 468.4ms InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 492 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...