/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix056_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 12:20:11,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 12:20:11,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 12:20:11,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 12:20:11,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 12:20:11,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 12:20:11,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 12:20:11,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 12:20:11,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 12:20:11,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 12:20:11,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 12:20:11,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 12:20:11,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 12:20:11,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 12:20:11,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 12:20:11,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 12:20:11,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 12:20:11,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 12:20:11,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 12:20:11,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 12:20:11,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 12:20:11,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 12:20:11,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 12:20:11,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 12:20:12,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 12:20:12,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 12:20:12,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 12:20:12,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 12:20:12,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 12:20:12,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 12:20:12,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 12:20:12,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 12:20:12,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 12:20:12,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 12:20:12,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 12:20:12,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 12:20:12,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 12:20:12,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 12:20:12,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 12:20:12,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 12:20:12,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 12:20:12,015 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-NoLbe.epf [2021-06-10 12:20:12,044 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 12:20:12,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 12:20:12,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 12:20:12,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 12:20:12,047 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 12:20:12,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 12:20:12,047 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 12:20:12,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 12:20:12,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 12:20:12,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 12:20:12,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 12:20:12,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 12:20:12,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 12:20:12,049 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 12:20:12,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 12:20:12,049 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 12:20:12,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 12:20:12,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 12:20:12,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 12:20:12,049 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 12:20:12,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 12:20:12,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 12:20:12,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 12:20:12,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 12:20:12,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 12:20:12,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 12:20:12,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 12:20:12,050 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 12:20:12,050 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 12:20:12,050 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 12:20:12,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 12:20:12,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 12:20:12,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 12:20:12,341 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 12:20:12,341 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 12:20:12,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix056_tso.oepc.i [2021-06-10 12:20:12,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeede1fdd/e1c696c0fb7b474eb22ab739e48e46ed/FLAG470a65bf0 [2021-06-10 12:20:12,825 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 12:20:12,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix056_tso.oepc.i [2021-06-10 12:20:12,836 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeede1fdd/e1c696c0fb7b474eb22ab739e48e46ed/FLAG470a65bf0 [2021-06-10 12:20:13,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeede1fdd/e1c696c0fb7b474eb22ab739e48e46ed [2021-06-10 12:20:13,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 12:20:13,132 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 12:20:13,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 12:20:13,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 12:20:13,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 12:20:13,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:20:13" (1/1) ... [2021-06-10 12:20:13,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f73e7bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:20:13, skipping insertion in model container [2021-06-10 12:20:13,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:20:13" (1/1) ... [2021-06-10 12:20:13,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 12:20:13,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 12:20:13,356 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/mix056_tso.oepc.i[949,962] [2021-06-10 12:20:13,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:20:13,549 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 12:20:13,556 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/mix056_tso.oepc.i[949,962] [2021-06-10 12:20:13,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:20:13,620 INFO L208 MainTranslator]: Completed translation [2021-06-10 12:20:13,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:20:13 WrapperNode [2021-06-10 12:20:13,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 12:20:13,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 12:20:13,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 12:20:13,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 12:20:13,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:20:13" (1/1) ... [2021-06-10 12:20:13,652 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:20:13" (1/1) ... [2021-06-10 12:20:13,695 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 12:20:13,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 12:20:13,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 12:20:13,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 12:20:13,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:20:13" (1/1) ... [2021-06-10 12:20:13,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:20:13" (1/1) ... [2021-06-10 12:20:13,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:20:13" (1/1) ... [2021-06-10 12:20:13,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:20:13" (1/1) ... [2021-06-10 12:20:13,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:20:13" (1/1) ... [2021-06-10 12:20:13,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:20:13" (1/1) ... [2021-06-10 12:20:13,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:20:13" (1/1) ... [2021-06-10 12:20:13,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 12:20:13,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 12:20:13,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 12:20:13,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 12:20:13,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:20:13" (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 [2021-06-10 12:20:13,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 12:20:13,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 12:20:13,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 12:20:13,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 12:20:13,829 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 12:20:13,830 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 12:20:13,830 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 12:20:13,830 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 12:20:13,831 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 12:20:13,831 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 12:20:13,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 12:20:13,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 12:20:13,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 12:20:13,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 12:20:13,832 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 12:20:15,514 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 12:20:15,514 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-06-10 12:20:15,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:20:15 BoogieIcfgContainer [2021-06-10 12:20:15,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 12:20:15,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 12:20:15,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 12:20:15,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 12:20:15,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 12:20:13" (1/3) ... [2021-06-10 12:20:15,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c8b1ee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:20:15, skipping insertion in model container [2021-06-10 12:20:15,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:20:13" (2/3) ... [2021-06-10 12:20:15,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c8b1ee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:20:15, skipping insertion in model container [2021-06-10 12:20:15,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:20:15" (3/3) ... [2021-06-10 12:20:15,522 INFO L111 eAbstractionObserver]: Analyzing ICFG mix056_tso.oepc.i [2021-06-10 12:20:15,528 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 12:20:15,532 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-06-10 12:20:15,533 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 12:20:15,559 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,559 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,559 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,559 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,559 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,560 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,560 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,560 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,560 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,560 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,560 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,560 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,560 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,560 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,561 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,561 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,561 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,561 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,561 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,561 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,561 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,561 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,561 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,561 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,561 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,562 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,562 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,563 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,563 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,563 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,563 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,563 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,563 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,563 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,564 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,564 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,564 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,564 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,565 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,565 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,565 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,565 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,565 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,565 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,565 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,565 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,565 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,565 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,566 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,566 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,566 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,566 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,566 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,566 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,566 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,566 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,566 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,567 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,567 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,567 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,567 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,567 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,567 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,567 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,568 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,568 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,568 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,568 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,568 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,568 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,568 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,568 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,570 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,570 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,570 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,571 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,573 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,573 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,573 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,573 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,573 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,573 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,573 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,574 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,574 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,574 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,575 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,575 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,575 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,576 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,576 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,576 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,576 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,577 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,577 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,577 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,577 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,577 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:20:15,578 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 12:20:15,590 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-06-10 12:20:15,604 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 12:20:15,604 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 12:20:15,604 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 12:20:15,604 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 12:20:15,604 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 12:20:15,604 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 12:20:15,604 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 12:20:15,604 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 12:20:15,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 104 places, 96 transitions, 207 flow [2021-06-10 12:20:15,638 INFO L129 PetriNetUnfolder]: 2/93 cut-off events. [2021-06-10 12:20:15,638 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:20:15,641 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2021-06-10 12:20:15,641 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 96 transitions, 207 flow [2021-06-10 12:20:15,644 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 93 transitions, 195 flow [2021-06-10 12:20:15,652 INFO L129 PetriNetUnfolder]: 0/59 cut-off events. [2021-06-10 12:20:15,652 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:20:15,653 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:20:15,653 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:20:15,653 INFO L428 AbstractCegarLoop]: === Iteration 1 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:20:15,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:20:15,657 INFO L82 PathProgramCache]: Analyzing trace with hash -992983575, now seen corresponding path program 1 times [2021-06-10 12:20:15,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:20:15,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345498326] [2021-06-10 12:20:15,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:20:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:20:15,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:15,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:15,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:15,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:20:15,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:20:15,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345498326] [2021-06-10 12:20:15,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:20:15,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 12:20:15,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604143606] [2021-06-10 12:20:15,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 12:20:15,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:20:15,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 12:20:15,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 12:20:15,862 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 96 [2021-06-10 12:20:15,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 93 transitions, 195 flow. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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) [2021-06-10 12:20:15,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:20:15,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 96 [2021-06-10 12:20:15,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:20:15,931 INFO L129 PetriNetUnfolder]: 16/205 cut-off events. [2021-06-10 12:20:15,931 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:20:15,932 INFO L84 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 205 events. 16/205 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 676 event pairs, 6 based on Foata normal form. 9/203 useless extension candidates. Maximal degree in co-relation 205. Up to 27 conditions per place. [2021-06-10 12:20:15,934 INFO L132 encePairwiseOnDemand]: 91/96 looper letters, 7 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2021-06-10 12:20:15,934 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 92 transitions, 211 flow [2021-06-10 12:20:15,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 12:20:15,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 12:20:15,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2021-06-10 12:20:15,943 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2021-06-10 12:20:15,944 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2021-06-10 12:20:15,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2021-06-10 12:20:15,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:20:15,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2021-06-10 12:20:15,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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) [2021-06-10 12:20:15,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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) [2021-06-10 12:20:15,952 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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) [2021-06-10 12:20:15,953 INFO L185 Difference]: Start difference. First operand has 101 places, 93 transitions, 195 flow. Second operand 3 states and 272 transitions. [2021-06-10 12:20:15,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 92 transitions, 211 flow [2021-06-10 12:20:15,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 92 transitions, 208 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 12:20:15,958 INFO L241 Difference]: Finished difference. Result has 98 places, 89 transitions, 188 flow [2021-06-10 12:20:15,959 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=98, PETRI_TRANSITIONS=89} [2021-06-10 12:20:15,960 INFO L343 CegarLoopForPetriNet]: 101 programPoint places, -3 predicate places. [2021-06-10 12:20:15,960 INFO L480 AbstractCegarLoop]: Abstraction has has 98 places, 89 transitions, 188 flow [2021-06-10 12:20:15,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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) [2021-06-10 12:20:15,960 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:20:15,960 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:20:15,960 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 12:20:15,960 INFO L428 AbstractCegarLoop]: === Iteration 2 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:20:15,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:20:15,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1513857761, now seen corresponding path program 1 times [2021-06-10 12:20:15,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:20:15,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308095808] [2021-06-10 12:20:15,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:20:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:20:16,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:16,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:16,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:16,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:20:16,083 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:20:16,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:20:16,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:16,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:20:16,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:16,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:20:16,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:16,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:16,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:20:16,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308095808] [2021-06-10 12:20:16,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:20:16,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:20:16,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653955255] [2021-06-10 12:20:16,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:20:16,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:20:16,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:20:16,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:20:16,137 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 96 [2021-06-10 12:20:16,138 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 89 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 6 states have internal predecessors, (505), 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) [2021-06-10 12:20:16,138 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:20:16,138 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 96 [2021-06-10 12:20:16,138 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:20:16,329 INFO L129 PetriNetUnfolder]: 30/251 cut-off events. [2021-06-10 12:20:16,329 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:20:16,332 INFO L84 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 251 events. 30/251 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1028 event pairs, 6 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 295. Up to 36 conditions per place. [2021-06-10 12:20:16,333 INFO L132 encePairwiseOnDemand]: 89/96 looper letters, 8 selfloop transitions, 3 changer transitions 31/112 dead transitions. [2021-06-10 12:20:16,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 112 transitions, 300 flow [2021-06-10 12:20:16,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 12:20:16,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 12:20:16,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 782 transitions. [2021-06-10 12:20:16,338 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9050925925925926 [2021-06-10 12:20:16,339 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 782 transitions. [2021-06-10 12:20:16,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 782 transitions. [2021-06-10 12:20:16,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:20:16,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 782 transitions. [2021-06-10 12:20:16,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 86.88888888888889) internal successors, (782), 9 states have internal predecessors, (782), 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) [2021-06-10 12:20:16,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 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) [2021-06-10 12:20:16,345 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 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) [2021-06-10 12:20:16,345 INFO L185 Difference]: Start difference. First operand has 98 places, 89 transitions, 188 flow. Second operand 9 states and 782 transitions. [2021-06-10 12:20:16,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 112 transitions, 300 flow [2021-06-10 12:20:16,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 112 transitions, 296 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 12:20:16,348 INFO L241 Difference]: Finished difference. Result has 111 places, 81 transitions, 207 flow [2021-06-10 12:20:16,348 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=207, PETRI_PLACES=111, PETRI_TRANSITIONS=81} [2021-06-10 12:20:16,349 INFO L343 CegarLoopForPetriNet]: 101 programPoint places, 10 predicate places. [2021-06-10 12:20:16,349 INFO L480 AbstractCegarLoop]: Abstraction has has 111 places, 81 transitions, 207 flow [2021-06-10 12:20:16,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 6 states have internal predecessors, (505), 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) [2021-06-10 12:20:16,350 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:20:16,351 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:20:16,352 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 12:20:16,352 INFO L428 AbstractCegarLoop]: === Iteration 3 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:20:16,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:20:16,357 INFO L82 PathProgramCache]: Analyzing trace with hash -294909762, now seen corresponding path program 1 times [2021-06-10 12:20:16,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:20:16,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38281391] [2021-06-10 12:20:16,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:20:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:20:16,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:16,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:16,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:16,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:20:16,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:16,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:20:16,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:16,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 12:20:16,504 INFO L142 QuantifierPusher]: treesize reduction 54, result has 55.4 percent of original size [2021-06-10 12:20:16,507 INFO L147 QuantifierPusher]: treesize reduction 9, result has 86.6 percent of original size 58 [2021-06-10 12:20:16,553 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:20:16,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:20:16,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:16,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:20:16,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:16,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:20:16,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:16,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:16,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:20:16,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38281391] [2021-06-10 12:20:16,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:20:16,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-10 12:20:16,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211941050] [2021-06-10 12:20:16,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 12:20:16,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:20:16,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 12:20:16,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-06-10 12:20:16,603 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 96 [2021-06-10 12:20:16,604 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 81 transitions, 207 flow. Second operand has 9 states, 9 states have (on average 78.11111111111111) internal successors, (703), 9 states have internal predecessors, (703), 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) [2021-06-10 12:20:16,604 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:20:16,604 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 96 [2021-06-10 12:20:16,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:20:16,921 INFO L129 PetriNetUnfolder]: 290/673 cut-off events. [2021-06-10 12:20:16,921 INFO L130 PetriNetUnfolder]: For 591/593 co-relation queries the response was YES. [2021-06-10 12:20:16,923 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1609 conditions, 673 events. 290/673 cut-off events. For 591/593 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3858 event pairs, 105 based on Foata normal form. 21/666 useless extension candidates. Maximal degree in co-relation 1555. Up to 258 conditions per place. [2021-06-10 12:20:16,926 INFO L132 encePairwiseOnDemand]: 85/96 looper letters, 12 selfloop transitions, 9 changer transitions 34/122 dead transitions. [2021-06-10 12:20:16,926 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 122 transitions, 427 flow [2021-06-10 12:20:16,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-10 12:20:16,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-06-10 12:20:16,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1136 transitions. [2021-06-10 12:20:16,929 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8452380952380952 [2021-06-10 12:20:16,929 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1136 transitions. [2021-06-10 12:20:16,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1136 transitions. [2021-06-10 12:20:16,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:20:16,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1136 transitions. [2021-06-10 12:20:16,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 81.14285714285714) internal successors, (1136), 14 states have internal predecessors, (1136), 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) [2021-06-10 12:20:16,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 96.0) internal successors, (1440), 15 states have internal predecessors, (1440), 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) [2021-06-10 12:20:16,934 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 96.0) internal successors, (1440), 15 states have internal predecessors, (1440), 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) [2021-06-10 12:20:16,934 INFO L185 Difference]: Start difference. First operand has 111 places, 81 transitions, 207 flow. Second operand 14 states and 1136 transitions. [2021-06-10 12:20:16,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 122 transitions, 427 flow [2021-06-10 12:20:16,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 122 transitions, 406 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-06-10 12:20:16,938 INFO L241 Difference]: Finished difference. Result has 115 places, 87 transitions, 282 flow [2021-06-10 12:20:16,939 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=282, PETRI_PLACES=115, PETRI_TRANSITIONS=87} [2021-06-10 12:20:16,939 INFO L343 CegarLoopForPetriNet]: 101 programPoint places, 14 predicate places. [2021-06-10 12:20:16,939 INFO L480 AbstractCegarLoop]: Abstraction has has 115 places, 87 transitions, 282 flow [2021-06-10 12:20:16,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 78.11111111111111) internal successors, (703), 9 states have internal predecessors, (703), 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) [2021-06-10 12:20:16,939 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:20:16,939 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:20:16,939 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 12:20:16,940 INFO L428 AbstractCegarLoop]: === Iteration 4 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:20:16,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:20:16,940 INFO L82 PathProgramCache]: Analyzing trace with hash -682190870, now seen corresponding path program 1 times [2021-06-10 12:20:16,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:20:16,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285864959] [2021-06-10 12:20:16,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:20:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:20:17,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:17,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:17,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:17,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:20:17,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:17,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:20:17,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:17,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 12:20:17,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:17,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:20:17,040 INFO L142 QuantifierPusher]: treesize reduction 17, result has 81.9 percent of original size [2021-06-10 12:20:17,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-06-10 12:20:17,070 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:20:17,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:20:17,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:17,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:20:17,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:17,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:20:17,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:17,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:17,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:20:17,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285864959] [2021-06-10 12:20:17,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:20:17,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-10 12:20:17,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790201758] [2021-06-10 12:20:17,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-10 12:20:17,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:20:17,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-10 12:20:17,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-10 12:20:17,108 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 96 [2021-06-10 12:20:17,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 87 transitions, 282 flow. Second operand has 10 states, 10 states have (on average 77.2) internal successors, (772), 10 states have internal predecessors, (772), 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) [2021-06-10 12:20:17,108 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:20:17,108 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 96 [2021-06-10 12:20:17,109 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:20:17,532 INFO L129 PetriNetUnfolder]: 233/554 cut-off events. [2021-06-10 12:20:17,532 INFO L130 PetriNetUnfolder]: For 1784/1805 co-relation queries the response was YES. [2021-06-10 12:20:17,535 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1994 conditions, 554 events. 233/554 cut-off events. For 1784/1805 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2979 event pairs, 22 based on Foata normal form. 18/555 useless extension candidates. Maximal degree in co-relation 1927. Up to 175 conditions per place. [2021-06-10 12:20:17,538 INFO L132 encePairwiseOnDemand]: 85/96 looper letters, 25 selfloop transitions, 12 changer transitions 35/138 dead transitions. [2021-06-10 12:20:17,538 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 138 transitions, 776 flow [2021-06-10 12:20:17,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-10 12:20:17,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-06-10 12:20:17,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1515 transitions. [2021-06-10 12:20:17,541 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8305921052631579 [2021-06-10 12:20:17,541 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1515 transitions. [2021-06-10 12:20:17,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1515 transitions. [2021-06-10 12:20:17,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:20:17,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1515 transitions. [2021-06-10 12:20:17,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 79.73684210526316) internal successors, (1515), 19 states have internal predecessors, (1515), 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) [2021-06-10 12:20:17,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 96.0) internal successors, (1920), 20 states have internal predecessors, (1920), 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) [2021-06-10 12:20:17,547 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 96.0) internal successors, (1920), 20 states have internal predecessors, (1920), 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) [2021-06-10 12:20:17,547 INFO L185 Difference]: Start difference. First operand has 115 places, 87 transitions, 282 flow. Second operand 19 states and 1515 transitions. [2021-06-10 12:20:17,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 138 transitions, 776 flow [2021-06-10 12:20:17,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 138 transitions, 740 flow, removed 17 selfloop flow, removed 4 redundant places. [2021-06-10 12:20:17,556 INFO L241 Difference]: Finished difference. Result has 134 places, 91 transitions, 368 flow [2021-06-10 12:20:17,557 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=368, PETRI_PLACES=134, PETRI_TRANSITIONS=91} [2021-06-10 12:20:17,557 INFO L343 CegarLoopForPetriNet]: 101 programPoint places, 33 predicate places. [2021-06-10 12:20:17,557 INFO L480 AbstractCegarLoop]: Abstraction has has 134 places, 91 transitions, 368 flow [2021-06-10 12:20:17,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 77.2) internal successors, (772), 10 states have internal predecessors, (772), 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) [2021-06-10 12:20:17,559 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:20:17,559 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:20:17,560 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 12:20:17,560 INFO L428 AbstractCegarLoop]: === Iteration 5 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:20:17,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:20:17,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1713273695, now seen corresponding path program 1 times [2021-06-10 12:20:17,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:20:17,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685812192] [2021-06-10 12:20:17,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:20:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:20:17,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:17,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:17,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:17,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:20:17,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:17,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:20:17,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:17,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 12:20:17,672 INFO L142 QuantifierPusher]: treesize reduction 7, result has 82.1 percent of original size [2021-06-10 12:20:17,672 INFO L147 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size 24 [2021-06-10 12:20:17,677 INFO L142 QuantifierPusher]: treesize reduction 7, result has 83.3 percent of original size [2021-06-10 12:20:17,678 INFO L147 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size 27 [2021-06-10 12:20:17,695 INFO L142 QuantifierPusher]: treesize reduction 26, result has 57.4 percent of original size [2021-06-10 12:20:17,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 12:20:17,714 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:20:17,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:20:17,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:17,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:20:17,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:17,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:20:17,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:17,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:17,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:20:17,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685812192] [2021-06-10 12:20:17,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:20:17,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-10 12:20:17,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140834623] [2021-06-10 12:20:17,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-10 12:20:17,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:20:17,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-10 12:20:17,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-10 12:20:17,747 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 96 [2021-06-10 12:20:17,747 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 91 transitions, 368 flow. Second operand has 10 states, 10 states have (on average 77.3) internal successors, (773), 10 states have internal predecessors, (773), 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) [2021-06-10 12:20:17,747 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:20:17,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 96 [2021-06-10 12:20:17,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:20:18,015 INFO L129 PetriNetUnfolder]: 171/458 cut-off events. [2021-06-10 12:20:18,015 INFO L130 PetriNetUnfolder]: For 3378/3405 co-relation queries the response was YES. [2021-06-10 12:20:18,018 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2104 conditions, 458 events. 171/458 cut-off events. For 3378/3405 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2282 event pairs, 40 based on Foata normal form. 15/456 useless extension candidates. Maximal degree in co-relation 2023. Up to 221 conditions per place. [2021-06-10 12:20:18,020 INFO L132 encePairwiseOnDemand]: 85/96 looper letters, 20 selfloop transitions, 10 changer transitions 13/109 dead transitions. [2021-06-10 12:20:18,020 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 109 transitions, 655 flow [2021-06-10 12:20:18,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:20:18,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:20:18,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1026 transitions. [2021-06-10 12:20:18,022 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8221153846153846 [2021-06-10 12:20:18,022 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1026 transitions. [2021-06-10 12:20:18,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1026 transitions. [2021-06-10 12:20:18,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:20:18,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1026 transitions. [2021-06-10 12:20:18,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 78.92307692307692) internal successors, (1026), 13 states have internal predecessors, (1026), 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) [2021-06-10 12:20:18,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 96.0) internal successors, (1344), 14 states have internal predecessors, (1344), 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) [2021-06-10 12:20:18,026 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 96.0) internal successors, (1344), 14 states have internal predecessors, (1344), 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) [2021-06-10 12:20:18,026 INFO L185 Difference]: Start difference. First operand has 134 places, 91 transitions, 368 flow. Second operand 13 states and 1026 transitions. [2021-06-10 12:20:18,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 109 transitions, 655 flow [2021-06-10 12:20:18,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 109 transitions, 548 flow, removed 52 selfloop flow, removed 14 redundant places. [2021-06-10 12:20:18,032 INFO L241 Difference]: Finished difference. Result has 128 places, 94 transitions, 386 flow [2021-06-10 12:20:18,032 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=386, PETRI_PLACES=128, PETRI_TRANSITIONS=94} [2021-06-10 12:20:18,032 INFO L343 CegarLoopForPetriNet]: 101 programPoint places, 27 predicate places. [2021-06-10 12:20:18,032 INFO L480 AbstractCegarLoop]: Abstraction has has 128 places, 94 transitions, 386 flow [2021-06-10 12:20:18,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 77.3) internal successors, (773), 10 states have internal predecessors, (773), 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) [2021-06-10 12:20:18,033 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:20:18,033 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:20:18,033 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 12:20:18,033 INFO L428 AbstractCegarLoop]: === Iteration 6 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:20:18,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:20:18,033 INFO L82 PathProgramCache]: Analyzing trace with hash -284585248, now seen corresponding path program 1 times [2021-06-10 12:20:18,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:20:18,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944163199] [2021-06-10 12:20:18,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:20:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:20:18,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:18,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:18,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:18,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:20:18,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:18,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:20:18,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:18,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 12:20:18,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:18,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:20:18,110 INFO L142 QuantifierPusher]: treesize reduction 17, result has 73.0 percent of original size [2021-06-10 12:20:18,111 INFO L147 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size 37 [2021-06-10 12:20:18,135 INFO L142 QuantifierPusher]: treesize reduction 43, result has 60.9 percent of original size [2021-06-10 12:20:18,136 INFO L147 QuantifierPusher]: treesize reduction 9, result has 86.6 percent of original size 58 [2021-06-10 12:20:18,162 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:20:18,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:20:18,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:18,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:20:18,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:18,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:20:18,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:18,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:18,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:20:18,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944163199] [2021-06-10 12:20:18,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:20:18,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-10 12:20:18,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446286591] [2021-06-10 12:20:18,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-10 12:20:18,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:20:18,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-10 12:20:18,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-10 12:20:18,197 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 96 [2021-06-10 12:20:18,198 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 94 transitions, 386 flow. Second operand has 11 states, 11 states have (on average 76.18181818181819) internal successors, (838), 11 states have internal predecessors, (838), 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) [2021-06-10 12:20:18,198 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:20:18,198 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 96 [2021-06-10 12:20:18,198 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:20:18,486 INFO L129 PetriNetUnfolder]: 173/483 cut-off events. [2021-06-10 12:20:18,486 INFO L130 PetriNetUnfolder]: For 2146/2231 co-relation queries the response was YES. [2021-06-10 12:20:18,489 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1934 conditions, 483 events. 173/483 cut-off events. For 2146/2231 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2558 event pairs, 34 based on Foata normal form. 26/490 useless extension candidates. Maximal degree in co-relation 1854. Up to 163 conditions per place. [2021-06-10 12:20:18,491 INFO L132 encePairwiseOnDemand]: 84/96 looper letters, 20 selfloop transitions, 11 changer transitions 29/125 dead transitions. [2021-06-10 12:20:18,491 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 125 transitions, 777 flow [2021-06-10 12:20:18,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-10 12:20:18,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-06-10 12:20:18,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1096 transitions. [2021-06-10 12:20:18,493 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8154761904761905 [2021-06-10 12:20:18,493 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1096 transitions. [2021-06-10 12:20:18,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1096 transitions. [2021-06-10 12:20:18,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:20:18,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1096 transitions. [2021-06-10 12:20:18,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 78.28571428571429) internal successors, (1096), 14 states have internal predecessors, (1096), 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) [2021-06-10 12:20:18,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 96.0) internal successors, (1440), 15 states have internal predecessors, (1440), 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) [2021-06-10 12:20:18,497 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 96.0) internal successors, (1440), 15 states have internal predecessors, (1440), 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) [2021-06-10 12:20:18,497 INFO L185 Difference]: Start difference. First operand has 128 places, 94 transitions, 386 flow. Second operand 14 states and 1096 transitions. [2021-06-10 12:20:18,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 125 transitions, 777 flow [2021-06-10 12:20:18,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 125 transitions, 715 flow, removed 25 selfloop flow, removed 13 redundant places. [2021-06-10 12:20:18,502 INFO L241 Difference]: Finished difference. Result has 129 places, 95 transitions, 417 flow [2021-06-10 12:20:18,503 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=417, PETRI_PLACES=129, PETRI_TRANSITIONS=95} [2021-06-10 12:20:18,503 INFO L343 CegarLoopForPetriNet]: 101 programPoint places, 28 predicate places. [2021-06-10 12:20:18,503 INFO L480 AbstractCegarLoop]: Abstraction has has 129 places, 95 transitions, 417 flow [2021-06-10 12:20:18,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 76.18181818181819) internal successors, (838), 11 states have internal predecessors, (838), 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) [2021-06-10 12:20:18,503 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:20:18,503 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:20:18,503 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 12:20:18,503 INFO L428 AbstractCegarLoop]: === Iteration 7 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:20:18,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:20:18,504 INFO L82 PathProgramCache]: Analyzing trace with hash -417730881, now seen corresponding path program 1 times [2021-06-10 12:20:18,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:20:18,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287680634] [2021-06-10 12:20:18,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:20:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:20:18,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:18,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:18,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:18,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:20:18,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:18,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:20:18,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:18,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 12:20:18,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:18,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:20:18,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:18,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-10 12:20:18,624 INFO L142 QuantifierPusher]: treesize reduction 10, result has 82.5 percent of original size [2021-06-10 12:20:18,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-10 12:20:18,642 INFO L142 QuantifierPusher]: treesize reduction 28, result has 62.2 percent of original size [2021-06-10 12:20:18,642 INFO L147 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size 37 [2021-06-10 12:20:18,664 INFO L142 QuantifierPusher]: treesize reduction 49, result has 65.5 percent of original size [2021-06-10 12:20:18,665 INFO L147 QuantifierPusher]: treesize reduction 9, result has 90.3 percent of original size 84 [2021-06-10 12:20:18,705 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:20:18,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:20:18,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:18,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:20:18,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:18,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:20:18,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:18,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:18,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:20:18,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287680634] [2021-06-10 12:20:18,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:20:18,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-06-10 12:20:18,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361791637] [2021-06-10 12:20:18,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-10 12:20:18,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:20:18,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-10 12:20:18,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-10 12:20:18,740 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 96 [2021-06-10 12:20:18,741 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 95 transitions, 417 flow. Second operand has 13 states, 13 states have (on average 75.23076923076923) internal successors, (978), 13 states have internal predecessors, (978), 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) [2021-06-10 12:20:18,741 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:20:18,741 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 96 [2021-06-10 12:20:18,741 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:20:19,092 INFO L129 PetriNetUnfolder]: 117/368 cut-off events. [2021-06-10 12:20:19,092 INFO L130 PetriNetUnfolder]: For 2072/2176 co-relation queries the response was YES. [2021-06-10 12:20:19,094 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1567 conditions, 368 events. 117/368 cut-off events. For 2072/2176 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1792 event pairs, 14 based on Foata normal form. 15/369 useless extension candidates. Maximal degree in co-relation 1486. Up to 153 conditions per place. [2021-06-10 12:20:19,096 INFO L132 encePairwiseOnDemand]: 84/96 looper letters, 25 selfloop transitions, 12 changer transitions 10/111 dead transitions. [2021-06-10 12:20:19,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 111 transitions, 687 flow [2021-06-10 12:20:19,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-10 12:20:19,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-06-10 12:20:19,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1073 transitions. [2021-06-10 12:20:19,098 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7983630952380952 [2021-06-10 12:20:19,098 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1073 transitions. [2021-06-10 12:20:19,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1073 transitions. [2021-06-10 12:20:19,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:20:19,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1073 transitions. [2021-06-10 12:20:19,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 76.64285714285714) internal successors, (1073), 14 states have internal predecessors, (1073), 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) [2021-06-10 12:20:19,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 96.0) internal successors, (1440), 15 states have internal predecessors, (1440), 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) [2021-06-10 12:20:19,102 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 96.0) internal successors, (1440), 15 states have internal predecessors, (1440), 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) [2021-06-10 12:20:19,102 INFO L185 Difference]: Start difference. First operand has 129 places, 95 transitions, 417 flow. Second operand 14 states and 1073 transitions. [2021-06-10 12:20:19,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 111 transitions, 687 flow [2021-06-10 12:20:19,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 111 transitions, 648 flow, removed 11 selfloop flow, removed 9 redundant places. [2021-06-10 12:20:19,106 INFO L241 Difference]: Finished difference. Result has 134 places, 98 transitions, 480 flow [2021-06-10 12:20:19,107 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=480, PETRI_PLACES=134, PETRI_TRANSITIONS=98} [2021-06-10 12:20:19,107 INFO L343 CegarLoopForPetriNet]: 101 programPoint places, 33 predicate places. [2021-06-10 12:20:19,107 INFO L480 AbstractCegarLoop]: Abstraction has has 134 places, 98 transitions, 480 flow [2021-06-10 12:20:19,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 75.23076923076923) internal successors, (978), 13 states have internal predecessors, (978), 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) [2021-06-10 12:20:19,107 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:20:19,107 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:20:19,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 12:20:19,108 INFO L428 AbstractCegarLoop]: === Iteration 8 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:20:19,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:20:19,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1458167309, now seen corresponding path program 2 times [2021-06-10 12:20:19,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:20:19,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970279713] [2021-06-10 12:20:19,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:20:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:20:19,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:19,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:19,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:19,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:20:19,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:19,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:20:19,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:19,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 12:20:19,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:19,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:20:19,217 INFO L142 QuantifierPusher]: treesize reduction 10, result has 83.3 percent of original size [2021-06-10 12:20:19,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-06-10 12:20:19,234 INFO L142 QuantifierPusher]: treesize reduction 32, result has 68.3 percent of original size [2021-06-10 12:20:19,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-06-10 12:20:19,246 INFO L142 QuantifierPusher]: treesize reduction 47, result has 64.1 percent of original size [2021-06-10 12:20:19,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-06-10 12:20:19,272 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:20:19,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:20:19,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:19,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:20:19,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:19,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:20:19,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:19,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:19,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:20:19,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970279713] [2021-06-10 12:20:19,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:20:19,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-10 12:20:19,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507538150] [2021-06-10 12:20:19,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-10 12:20:19,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:20:19,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-10 12:20:19,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-06-10 12:20:19,304 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 96 [2021-06-10 12:20:19,305 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 98 transitions, 480 flow. Second operand has 11 states, 11 states have (on average 75.45454545454545) internal successors, (830), 11 states have internal predecessors, (830), 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) [2021-06-10 12:20:19,305 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:20:19,305 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 96 [2021-06-10 12:20:19,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:20:19,545 INFO L129 PetriNetUnfolder]: 121/388 cut-off events. [2021-06-10 12:20:19,546 INFO L130 PetriNetUnfolder]: For 3416/3529 co-relation queries the response was YES. [2021-06-10 12:20:19,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1865 conditions, 388 events. 121/388 cut-off events. For 3416/3529 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1945 event pairs, 18 based on Foata normal form. 16/388 useless extension candidates. Maximal degree in co-relation 1781. Up to 166 conditions per place. [2021-06-10 12:20:19,550 INFO L132 encePairwiseOnDemand]: 84/96 looper letters, 27 selfloop transitions, 12 changer transitions 10/113 dead transitions. [2021-06-10 12:20:19,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 113 transitions, 796 flow [2021-06-10 12:20:19,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:20:19,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:20:19,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1000 transitions. [2021-06-10 12:20:19,552 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8012820512820513 [2021-06-10 12:20:19,552 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1000 transitions. [2021-06-10 12:20:19,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1000 transitions. [2021-06-10 12:20:19,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:20:19,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1000 transitions. [2021-06-10 12:20:19,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.92307692307692) internal successors, (1000), 13 states have internal predecessors, (1000), 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) [2021-06-10 12:20:19,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 96.0) internal successors, (1344), 14 states have internal predecessors, (1344), 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) [2021-06-10 12:20:19,556 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 96.0) internal successors, (1344), 14 states have internal predecessors, (1344), 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) [2021-06-10 12:20:19,556 INFO L185 Difference]: Start difference. First operand has 134 places, 98 transitions, 480 flow. Second operand 13 states and 1000 transitions. [2021-06-10 12:20:19,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 113 transitions, 796 flow [2021-06-10 12:20:19,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 113 transitions, 692 flow, removed 42 selfloop flow, removed 12 redundant places. [2021-06-10 12:20:19,563 INFO L241 Difference]: Finished difference. Result has 135 places, 100 transitions, 506 flow [2021-06-10 12:20:19,564 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=506, PETRI_PLACES=135, PETRI_TRANSITIONS=100} [2021-06-10 12:20:19,564 INFO L343 CegarLoopForPetriNet]: 101 programPoint places, 34 predicate places. [2021-06-10 12:20:19,564 INFO L480 AbstractCegarLoop]: Abstraction has has 135 places, 100 transitions, 506 flow [2021-06-10 12:20:19,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 75.45454545454545) internal successors, (830), 11 states have internal predecessors, (830), 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) [2021-06-10 12:20:19,565 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:20:19,565 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:20:19,565 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 12:20:19,565 INFO L428 AbstractCegarLoop]: === Iteration 9 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:20:19,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:20:19,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1488363329, now seen corresponding path program 3 times [2021-06-10 12:20:19,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:20:19,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539830228] [2021-06-10 12:20:19,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:20:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:20:19,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:19,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:19,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:19,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:20:19,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:19,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:20:19,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:19,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 12:20:19,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:19,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:20:19,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:19,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-10 12:20:19,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:19,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:20:19,698 INFO L142 QuantifierPusher]: treesize reduction 28, result has 64.1 percent of original size [2021-06-10 12:20:19,699 INFO L147 QuantifierPusher]: treesize reduction 9, result has 82.0 percent of original size 41 [2021-06-10 12:20:19,723 INFO L142 QuantifierPusher]: treesize reduction 28, result has 65.9 percent of original size [2021-06-10 12:20:19,724 INFO L147 QuantifierPusher]: treesize reduction 9, result has 83.3 percent of original size 45 [2021-06-10 12:20:19,750 INFO L142 QuantifierPusher]: treesize reduction 28, result has 63.2 percent of original size [2021-06-10 12:20:19,750 INFO L147 QuantifierPusher]: treesize reduction 9, result has 81.3 percent of original size 39 [2021-06-10 12:20:19,772 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:20:19,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:20:19,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:19,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:20:19,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:19,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:20:19,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:19,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:19,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:20:19,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539830228] [2021-06-10 12:20:19,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:20:19,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-10 12:20:19,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558417761] [2021-06-10 12:20:19,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-10 12:20:19,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:20:19,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-10 12:20:19,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-10 12:20:19,813 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 96 [2021-06-10 12:20:19,814 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 100 transitions, 506 flow. Second operand has 14 states, 14 states have (on average 74.21428571428571) internal successors, (1039), 14 states have internal predecessors, (1039), 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) [2021-06-10 12:20:19,814 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:20:19,814 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 96 [2021-06-10 12:20:19,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:20:20,190 INFO L129 PetriNetUnfolder]: 121/396 cut-off events. [2021-06-10 12:20:20,191 INFO L130 PetriNetUnfolder]: For 3521/3639 co-relation queries the response was YES. [2021-06-10 12:20:20,193 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1897 conditions, 396 events. 121/396 cut-off events. For 3521/3639 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2012 event pairs, 18 based on Foata normal form. 22/403 useless extension candidates. Maximal degree in co-relation 1812. Up to 158 conditions per place. [2021-06-10 12:20:20,195 INFO L132 encePairwiseOnDemand]: 82/96 looper letters, 24 selfloop transitions, 17 changer transitions 10/114 dead transitions. [2021-06-10 12:20:20,195 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 114 transitions, 818 flow [2021-06-10 12:20:20,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-10 12:20:20,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-06-10 12:20:20,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1209 transitions. [2021-06-10 12:20:20,198 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.787109375 [2021-06-10 12:20:20,198 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1209 transitions. [2021-06-10 12:20:20,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1209 transitions. [2021-06-10 12:20:20,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:20:20,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1209 transitions. [2021-06-10 12:20:20,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 75.5625) internal successors, (1209), 16 states have internal predecessors, (1209), 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) [2021-06-10 12:20:20,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 96.0) internal successors, (1632), 17 states have internal predecessors, (1632), 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) [2021-06-10 12:20:20,202 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 96.0) internal successors, (1632), 17 states have internal predecessors, (1632), 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) [2021-06-10 12:20:20,202 INFO L185 Difference]: Start difference. First operand has 135 places, 100 transitions, 506 flow. Second operand 16 states and 1209 transitions. [2021-06-10 12:20:20,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 114 transitions, 818 flow [2021-06-10 12:20:20,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 114 transitions, 725 flow, removed 36 selfloop flow, removed 11 redundant places. [2021-06-10 12:20:20,208 INFO L241 Difference]: Finished difference. Result has 140 places, 101 transitions, 541 flow [2021-06-10 12:20:20,208 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=541, PETRI_PLACES=140, PETRI_TRANSITIONS=101} [2021-06-10 12:20:20,208 INFO L343 CegarLoopForPetriNet]: 101 programPoint places, 39 predicate places. [2021-06-10 12:20:20,208 INFO L480 AbstractCegarLoop]: Abstraction has has 140 places, 101 transitions, 541 flow [2021-06-10 12:20:20,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 74.21428571428571) internal successors, (1039), 14 states have internal predecessors, (1039), 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) [2021-06-10 12:20:20,208 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:20:20,208 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:20:20,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-10 12:20:20,209 INFO L428 AbstractCegarLoop]: === Iteration 10 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:20:20,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:20:20,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1945109917, now seen corresponding path program 1 times [2021-06-10 12:20:20,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:20:20,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755552627] [2021-06-10 12:20:20,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:20:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:20:20,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:20,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:20,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:20,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:20:20,243 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:20:20,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:20:20,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:20,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:20:20,260 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:20:20,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:20:20,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:20,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:20,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:20:20,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755552627] [2021-06-10 12:20:20,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:20:20,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:20:20,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518131323] [2021-06-10 12:20:20,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:20:20,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:20:20,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:20:20,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:20:20,268 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 96 [2021-06-10 12:20:20,268 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 101 transitions, 541 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 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) [2021-06-10 12:20:20,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:20:20,268 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 96 [2021-06-10 12:20:20,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:20:20,444 INFO L129 PetriNetUnfolder]: 374/1056 cut-off events. [2021-06-10 12:20:20,444 INFO L130 PetriNetUnfolder]: For 4355/4375 co-relation queries the response was YES. [2021-06-10 12:20:20,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3264 conditions, 1056 events. 374/1056 cut-off events. For 4355/4375 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7973 event pairs, 35 based on Foata normal form. 10/960 useless extension candidates. Maximal degree in co-relation 3182. Up to 211 conditions per place. [2021-06-10 12:20:20,482 INFO L132 encePairwiseOnDemand]: 86/96 looper letters, 24 selfloop transitions, 17 changer transitions 0/131 dead transitions. [2021-06-10 12:20:20,482 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 131 transitions, 683 flow [2021-06-10 12:20:20,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:20:20,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:20:20,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 863 transitions. [2021-06-10 12:20:20,484 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8989583333333333 [2021-06-10 12:20:20,484 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 863 transitions. [2021-06-10 12:20:20,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 863 transitions. [2021-06-10 12:20:20,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:20:20,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 863 transitions. [2021-06-10 12:20:20,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 86.3) internal successors, (863), 10 states have internal predecessors, (863), 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) [2021-06-10 12:20:20,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 96.0) internal successors, (1056), 11 states have internal predecessors, (1056), 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) [2021-06-10 12:20:20,487 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 96.0) internal successors, (1056), 11 states have internal predecessors, (1056), 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) [2021-06-10 12:20:20,487 INFO L185 Difference]: Start difference. First operand has 140 places, 101 transitions, 541 flow. Second operand 10 states and 863 transitions. [2021-06-10 12:20:20,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 131 transitions, 683 flow [2021-06-10 12:20:20,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 131 transitions, 621 flow, removed 18 selfloop flow, removed 14 redundant places. [2021-06-10 12:20:20,495 INFO L241 Difference]: Finished difference. Result has 135 places, 116 transitions, 599 flow [2021-06-10 12:20:20,495 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=599, PETRI_PLACES=135, PETRI_TRANSITIONS=116} [2021-06-10 12:20:20,496 INFO L343 CegarLoopForPetriNet]: 101 programPoint places, 34 predicate places. [2021-06-10 12:20:20,496 INFO L480 AbstractCegarLoop]: Abstraction has has 135 places, 116 transitions, 599 flow [2021-06-10 12:20:20,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 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) [2021-06-10 12:20:20,496 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:20:20,496 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:20:20,496 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-10 12:20:20,496 INFO L428 AbstractCegarLoop]: === Iteration 11 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:20:20,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:20:20,497 INFO L82 PathProgramCache]: Analyzing trace with hash 226218921, now seen corresponding path program 1 times [2021-06-10 12:20:20,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:20:20,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874124778] [2021-06-10 12:20:20,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:20:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:20:20,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:20,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:20,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:20,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:20:20,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:20,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:20:20,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:20,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 12:20:20,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:20,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-06-10 12:20:20,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:20,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:20:20,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:20,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 12:20:20,610 INFO L142 QuantifierPusher]: treesize reduction 17, result has 75.0 percent of original size [2021-06-10 12:20:20,611 INFO L147 QuantifierPusher]: treesize reduction 9, result has 82.4 percent of original size 42 [2021-06-10 12:20:20,637 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:20:20,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:20:20,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:20,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:20:20,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:20,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:20:20,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:20,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:20,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:20:20,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874124778] [2021-06-10 12:20:20,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:20:20,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-10 12:20:20,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919967997] [2021-06-10 12:20:20,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-10 12:20:20,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:20:20,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-10 12:20:20,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-10 12:20:20,672 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 96 [2021-06-10 12:20:20,673 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 116 transitions, 599 flow. Second operand has 12 states, 12 states have (on average 75.33333333333333) internal successors, (904), 12 states have internal predecessors, (904), 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) [2021-06-10 12:20:20,673 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:20:20,673 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 96 [2021-06-10 12:20:20,673 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:20:21,106 INFO L129 PetriNetUnfolder]: 234/1051 cut-off events. [2021-06-10 12:20:21,106 INFO L130 PetriNetUnfolder]: For 3442/3694 co-relation queries the response was YES. [2021-06-10 12:20:21,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3551 conditions, 1051 events. 234/1051 cut-off events. For 3442/3694 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8864 event pairs, 40 based on Foata normal form. 32/1018 useless extension candidates. Maximal degree in co-relation 3467. Up to 202 conditions per place. [2021-06-10 12:20:21,116 INFO L132 encePairwiseOnDemand]: 85/96 looper letters, 33 selfloop transitions, 24 changer transitions 0/136 dead transitions. [2021-06-10 12:20:21,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 136 transitions, 945 flow [2021-06-10 12:20:21,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-10 12:20:21,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-06-10 12:20:21,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1078 transitions. [2021-06-10 12:20:21,118 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8020833333333334 [2021-06-10 12:20:21,118 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1078 transitions. [2021-06-10 12:20:21,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1078 transitions. [2021-06-10 12:20:21,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:20:21,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1078 transitions. [2021-06-10 12:20:21,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 77.0) internal successors, (1078), 14 states have internal predecessors, (1078), 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) [2021-06-10 12:20:21,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 96.0) internal successors, (1440), 15 states have internal predecessors, (1440), 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) [2021-06-10 12:20:21,121 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 96.0) internal successors, (1440), 15 states have internal predecessors, (1440), 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) [2021-06-10 12:20:21,121 INFO L185 Difference]: Start difference. First operand has 135 places, 116 transitions, 599 flow. Second operand 14 states and 1078 transitions. [2021-06-10 12:20:21,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 136 transitions, 945 flow [2021-06-10 12:20:21,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 136 transitions, 919 flow, removed 12 selfloop flow, removed 1 redundant places. [2021-06-10 12:20:21,131 INFO L241 Difference]: Finished difference. Result has 154 places, 128 transitions, 849 flow [2021-06-10 12:20:21,131 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=849, PETRI_PLACES=154, PETRI_TRANSITIONS=128} [2021-06-10 12:20:21,131 INFO L343 CegarLoopForPetriNet]: 101 programPoint places, 53 predicate places. [2021-06-10 12:20:21,131 INFO L480 AbstractCegarLoop]: Abstraction has has 154 places, 128 transitions, 849 flow [2021-06-10 12:20:21,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 75.33333333333333) internal successors, (904), 12 states have internal predecessors, (904), 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) [2021-06-10 12:20:21,132 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:20:21,132 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:20:21,132 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-10 12:20:21,132 INFO L428 AbstractCegarLoop]: === Iteration 12 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:20:21,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:20:21,132 INFO L82 PathProgramCache]: Analyzing trace with hash -539470133, now seen corresponding path program 1 times [2021-06-10 12:20:21,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:20:21,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956180576] [2021-06-10 12:20:21,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:20:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:20:21,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:21,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:21,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:21,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:20:21,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:21,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:20:21,166 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:20:21,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:20:21,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:21,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:20:21,184 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:20:21,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:20:21,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:21,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:21,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:20:21,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956180576] [2021-06-10 12:20:21,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:20:21,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:20:21,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188666506] [2021-06-10 12:20:21,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:20:21,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:20:21,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:20:21,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:20:21,192 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 96 [2021-06-10 12:20:21,192 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 128 transitions, 849 flow. Second operand has 7 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 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) [2021-06-10 12:20:21,192 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:20:21,192 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 96 [2021-06-10 12:20:21,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:20:21,406 INFO L129 PetriNetUnfolder]: 391/1144 cut-off events. [2021-06-10 12:20:21,406 INFO L130 PetriNetUnfolder]: For 3989/5455 co-relation queries the response was YES. [2021-06-10 12:20:21,413 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4229 conditions, 1144 events. 391/1144 cut-off events. For 3989/5455 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 9197 event pairs, 17 based on Foata normal form. 196/1233 useless extension candidates. Maximal degree in co-relation 4140. Up to 391 conditions per place. [2021-06-10 12:20:21,417 INFO L132 encePairwiseOnDemand]: 86/96 looper letters, 20 selfloop transitions, 32 changer transitions 18/154 dead transitions. [2021-06-10 12:20:21,417 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 154 transitions, 1105 flow [2021-06-10 12:20:21,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:20:21,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:20:21,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1123 transitions. [2021-06-10 12:20:21,418 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8998397435897436 [2021-06-10 12:20:21,419 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1123 transitions. [2021-06-10 12:20:21,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1123 transitions. [2021-06-10 12:20:21,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:20:21,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1123 transitions. [2021-06-10 12:20:21,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 86.38461538461539) internal successors, (1123), 13 states have internal predecessors, (1123), 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) [2021-06-10 12:20:21,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 96.0) internal successors, (1344), 14 states have internal predecessors, (1344), 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) [2021-06-10 12:20:21,422 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 96.0) internal successors, (1344), 14 states have internal predecessors, (1344), 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) [2021-06-10 12:20:21,422 INFO L185 Difference]: Start difference. First operand has 154 places, 128 transitions, 849 flow. Second operand 13 states and 1123 transitions. [2021-06-10 12:20:21,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 154 transitions, 1105 flow [2021-06-10 12:20:21,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 154 transitions, 930 flow, removed 67 selfloop flow, removed 14 redundant places. [2021-06-10 12:20:21,432 INFO L241 Difference]: Finished difference. Result has 156 places, 130 transitions, 758 flow [2021-06-10 12:20:21,432 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=758, PETRI_PLACES=156, PETRI_TRANSITIONS=130} [2021-06-10 12:20:21,432 INFO L343 CegarLoopForPetriNet]: 101 programPoint places, 55 predicate places. [2021-06-10 12:20:21,432 INFO L480 AbstractCegarLoop]: Abstraction has has 156 places, 130 transitions, 758 flow [2021-06-10 12:20:21,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 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) [2021-06-10 12:20:21,433 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:20:21,433 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:20:21,433 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-10 12:20:21,433 INFO L428 AbstractCegarLoop]: === Iteration 13 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:20:21,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:20:21,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1395077134, now seen corresponding path program 1 times [2021-06-10 12:20:21,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:20:21,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856337332] [2021-06-10 12:20:21,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:20:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:20:21,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:21,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:21,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:21,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:20:21,489 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:20:21,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:20:21,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:21,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:20:21,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:21,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:20:21,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:21,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:21,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:20:21,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856337332] [2021-06-10 12:20:21,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:20:21,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:20:21,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762602023] [2021-06-10 12:20:21,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:20:21,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:20:21,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:20:21,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:20:21,513 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 96 [2021-06-10 12:20:21,513 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 130 transitions, 758 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 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) [2021-06-10 12:20:21,513 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:20:21,513 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 96 [2021-06-10 12:20:21,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:20:21,690 INFO L129 PetriNetUnfolder]: 330/1323 cut-off events. [2021-06-10 12:20:21,690 INFO L130 PetriNetUnfolder]: For 5294/6268 co-relation queries the response was YES. [2021-06-10 12:20:21,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4725 conditions, 1323 events. 330/1323 cut-off events. For 5294/6268 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 11952 event pairs, 8 based on Foata normal form. 14/1234 useless extension candidates. Maximal degree in co-relation 4641. Up to 388 conditions per place. [2021-06-10 12:20:21,701 INFO L132 encePairwiseOnDemand]: 90/96 looper letters, 13 selfloop transitions, 6 changer transitions 6/144 dead transitions. [2021-06-10 12:20:21,701 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 144 transitions, 942 flow [2021-06-10 12:20:21,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 12:20:21,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 12:20:21,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 773 transitions. [2021-06-10 12:20:21,702 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8946759259259259 [2021-06-10 12:20:21,702 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 773 transitions. [2021-06-10 12:20:21,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 773 transitions. [2021-06-10 12:20:21,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:20:21,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 773 transitions. [2021-06-10 12:20:21,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 85.88888888888889) internal successors, (773), 9 states have internal predecessors, (773), 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) [2021-06-10 12:20:21,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 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) [2021-06-10 12:20:21,705 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 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) [2021-06-10 12:20:21,705 INFO L185 Difference]: Start difference. First operand has 156 places, 130 transitions, 758 flow. Second operand 9 states and 773 transitions. [2021-06-10 12:20:21,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 144 transitions, 942 flow [2021-06-10 12:20:21,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 144 transitions, 750 flow, removed 83 selfloop flow, removed 14 redundant places. [2021-06-10 12:20:21,727 INFO L241 Difference]: Finished difference. Result has 151 places, 133 transitions, 675 flow [2021-06-10 12:20:21,728 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=675, PETRI_PLACES=151, PETRI_TRANSITIONS=133} [2021-06-10 12:20:21,728 INFO L343 CegarLoopForPetriNet]: 101 programPoint places, 50 predicate places. [2021-06-10 12:20:21,728 INFO L480 AbstractCegarLoop]: Abstraction has has 151 places, 133 transitions, 675 flow [2021-06-10 12:20:21,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 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) [2021-06-10 12:20:21,728 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:20:21,728 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:20:21,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-10 12:20:21,728 INFO L428 AbstractCegarLoop]: === Iteration 14 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:20:21,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:20:21,729 INFO L82 PathProgramCache]: Analyzing trace with hash 309156938, now seen corresponding path program 1 times [2021-06-10 12:20:21,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:20:21,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800996581] [2021-06-10 12:20:21,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:20:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:20:21,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:21,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:21,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:21,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:20:21,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:21,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:20:21,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:21,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:20:21,772 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:20:21,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:20:21,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:21,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:20:21,790 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:20:21,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:20:21,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:21,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:21,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:20:21,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800996581] [2021-06-10 12:20:21,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:20:21,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:20:21,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791721176] [2021-06-10 12:20:21,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:20:21,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:20:21,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:20:21,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:20:21,798 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 96 [2021-06-10 12:20:21,799 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 133 transitions, 675 flow. Second operand has 8 states, 8 states have (on average 83.125) internal successors, (665), 8 states have internal predecessors, (665), 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) [2021-06-10 12:20:21,799 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:20:21,799 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 96 [2021-06-10 12:20:21,799 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:20:22,105 INFO L129 PetriNetUnfolder]: 478/1377 cut-off events. [2021-06-10 12:20:22,106 INFO L130 PetriNetUnfolder]: For 2408/4403 co-relation queries the response was YES. [2021-06-10 12:20:22,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4326 conditions, 1377 events. 478/1377 cut-off events. For 2408/4403 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 12174 event pairs, 0 based on Foata normal form. 296/1499 useless extension candidates. Maximal degree in co-relation 4288. Up to 252 conditions per place. [2021-06-10 12:20:22,115 INFO L132 encePairwiseOnDemand]: 86/96 looper letters, 16 selfloop transitions, 36 changer transitions 26/158 dead transitions. [2021-06-10 12:20:22,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 158 transitions, 953 flow [2021-06-10 12:20:22,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-10 12:20:22,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-06-10 12:20:22,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1368 transitions. [2021-06-10 12:20:22,118 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.890625 [2021-06-10 12:20:22,118 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1368 transitions. [2021-06-10 12:20:22,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1368 transitions. [2021-06-10 12:20:22,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:20:22,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1368 transitions. [2021-06-10 12:20:22,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 85.5) internal successors, (1368), 16 states have internal predecessors, (1368), 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) [2021-06-10 12:20:22,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 96.0) internal successors, (1632), 17 states have internal predecessors, (1632), 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) [2021-06-10 12:20:22,129 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 96.0) internal successors, (1632), 17 states have internal predecessors, (1632), 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) [2021-06-10 12:20:22,129 INFO L185 Difference]: Start difference. First operand has 151 places, 133 transitions, 675 flow. Second operand 16 states and 1368 transitions. [2021-06-10 12:20:22,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 158 transitions, 953 flow [2021-06-10 12:20:22,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 158 transitions, 866 flow, removed 37 selfloop flow, removed 12 redundant places. [2021-06-10 12:20:22,144 INFO L241 Difference]: Finished difference. Result has 158 places, 126 transitions, 663 flow [2021-06-10 12:20:22,144 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=663, PETRI_PLACES=158, PETRI_TRANSITIONS=126} [2021-06-10 12:20:22,145 INFO L343 CegarLoopForPetriNet]: 101 programPoint places, 57 predicate places. [2021-06-10 12:20:22,145 INFO L480 AbstractCegarLoop]: Abstraction has has 158 places, 126 transitions, 663 flow [2021-06-10 12:20:22,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 83.125) internal successors, (665), 8 states have internal predecessors, (665), 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) [2021-06-10 12:20:22,145 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:20:22,145 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:20:22,145 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-10 12:20:22,145 INFO L428 AbstractCegarLoop]: === Iteration 15 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:20:22,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:20:22,145 INFO L82 PathProgramCache]: Analyzing trace with hash -390525496, now seen corresponding path program 1 times [2021-06-10 12:20:22,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:20:22,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867801961] [2021-06-10 12:20:22,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:20:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:20:22,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:22,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:22,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:22,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:20:22,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:22,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:20:22,197 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:20:22,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:20:22,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:22,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:20:22,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:22,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:20:22,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:20:22,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:20:22,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:20:22,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867801961] [2021-06-10 12:20:22,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:20:22,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:20:22,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687315889] [2021-06-10 12:20:22,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:20:22,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:20:22,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:20:22,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:20:22,222 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 96 [2021-06-10 12:20:22,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 126 transitions, 663 flow. Second operand has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 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) [2021-06-10 12:20:22,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:20:22,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 96 [2021-06-10 12:20:22,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:20:22,369 INFO L129 PetriNetUnfolder]: 233/978 cut-off events. [2021-06-10 12:20:22,369 INFO L130 PetriNetUnfolder]: For 2210/2440 co-relation queries the response was YES. [2021-06-10 12:20:22,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2909 conditions, 978 events. 233/978 cut-off events. For 2210/2440 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8693 event pairs, 0 based on Foata normal form. 1/903 useless extension candidates. Maximal degree in co-relation 2878. Up to 132 conditions per place. [2021-06-10 12:20:22,373 INFO L132 encePairwiseOnDemand]: 90/96 looper letters, 9 selfloop transitions, 1 changer transitions 17/131 dead transitions. [2021-06-10 12:20:22,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 131 transitions, 711 flow [2021-06-10 12:20:22,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-10 12:20:22,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-10 12:20:22,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 590 transitions. [2021-06-10 12:20:22,374 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8779761904761905 [2021-06-10 12:20:22,375 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 590 transitions. [2021-06-10 12:20:22,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 590 transitions. [2021-06-10 12:20:22,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:20:22,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 590 transitions. [2021-06-10 12:20:22,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.28571428571429) internal successors, (590), 7 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:20:22,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:20:22,376 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:20:22,376 INFO L185 Difference]: Start difference. First operand has 158 places, 126 transitions, 663 flow. Second operand 7 states and 590 transitions. [2021-06-10 12:20:22,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 131 transitions, 711 flow [2021-06-10 12:20:22,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 131 transitions, 625 flow, removed 14 selfloop flow, removed 18 redundant places. [2021-06-10 12:20:22,388 INFO L241 Difference]: Finished difference. Result has 144 places, 114 transitions, 519 flow [2021-06-10 12:20:22,389 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=519, PETRI_PLACES=144, PETRI_TRANSITIONS=114} [2021-06-10 12:20:22,389 INFO L343 CegarLoopForPetriNet]: 101 programPoint places, 43 predicate places. [2021-06-10 12:20:22,389 INFO L480 AbstractCegarLoop]: Abstraction has has 144 places, 114 transitions, 519 flow [2021-06-10 12:20:22,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 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) [2021-06-10 12:20:22,389 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:20:22,389 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:20:22,389 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-10 12:20:22,389 INFO L428 AbstractCegarLoop]: === Iteration 16 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:20:22,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:20:22,390 INFO L82 PathProgramCache]: Analyzing trace with hash 615371028, now seen corresponding path program 2 times [2021-06-10 12:20:22,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:20:22,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491833814] [2021-06-10 12:20:22,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:20:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-10 12:20:22,413 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-10 12:20:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-10 12:20:22,445 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-10 12:20:22,478 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-10 12:20:22,480 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-10 12:20:22,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-10 12:20:22,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 12:20:22 BasicIcfg [2021-06-10 12:20:22,578 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 12:20:22,579 INFO L168 Benchmark]: Toolchain (without parser) took 9446.57 ms. Allocated memory was 369.1 MB in the beginning and 608.2 MB in the end (delta: 239.1 MB). Free memory was 332.0 MB in the beginning and 502.6 MB in the end (delta: -170.6 MB). Peak memory consumption was 71.4 MB. Max. memory is 16.0 GB. [2021-06-10 12:20:22,579 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 369.1 MB. Free memory was 349.6 MB in the beginning and 349.6 MB in the end (delta: 71.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:20:22,579 INFO L168 Benchmark]: CACSL2BoogieTranslator took 485.32 ms. Allocated memory is still 369.1 MB. Free memory was 331.8 MB in the beginning and 327.4 MB in the end (delta: 4.4 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.0 GB. [2021-06-10 12:20:22,580 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.47 ms. Allocated memory is still 369.1 MB. Free memory was 327.4 MB in the beginning and 325.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:20:22,580 INFO L168 Benchmark]: Boogie Preprocessor took 56.66 ms. Allocated memory is still 369.1 MB. Free memory was 325.3 MB in the beginning and 323.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:20:22,580 INFO L168 Benchmark]: RCFGBuilder took 1763.19 ms. Allocated memory is still 369.1 MB. Free memory was 322.2 MB in the beginning and 284.2 MB in the end (delta: 38.0 MB). Peak memory consumption was 138.4 MB. Max. memory is 16.0 GB. [2021-06-10 12:20:22,580 INFO L168 Benchmark]: TraceAbstraction took 7060.14 ms. Allocated memory was 369.1 MB in the beginning and 608.2 MB in the end (delta: 239.1 MB). Free memory was 283.2 MB in the beginning and 502.6 MB in the end (delta: -219.4 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.0 GB. [2021-06-10 12:20:22,581 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 369.1 MB. Free memory was 349.6 MB in the beginning and 349.6 MB in the end (delta: 71.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 485.32 ms. Allocated memory is still 369.1 MB. Free memory was 331.8 MB in the beginning and 327.4 MB in the end (delta: 4.4 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 74.47 ms. Allocated memory is still 369.1 MB. Free memory was 327.4 MB in the beginning and 325.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 56.66 ms. Allocated memory is still 369.1 MB. Free memory was 325.3 MB in the beginning and 323.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 1763.19 ms. Allocated memory is still 369.1 MB. Free memory was 322.2 MB in the beginning and 284.2 MB in the end (delta: 38.0 MB). Peak memory consumption was 138.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 7060.14 ms. Allocated memory was 369.1 MB in the beginning and 608.2 MB in the end (delta: 239.1 MB). Free memory was 283.2 MB in the beginning and 502.6 MB in the end (delta: -219.4 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; VAL [__unbuffered_cnt=0] [L711] 0 int __unbuffered_p2_EAX = 0; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0] [L712] 0 _Bool main$tmp_guard0; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0] [L713] 0 _Bool main$tmp_guard1; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0] [L715] 0 int x = 0; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0] [L717] 0 int y = 0; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L718] 0 _Bool y$flush_delayed; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0] [L719] 0 int y$mem_tmp; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0] [L720] 0 _Bool y$r_buff0_thd0; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0] [L721] 0 _Bool y$r_buff0_thd1; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0] [L722] 0 _Bool y$r_buff0_thd2; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0] [L723] 0 _Bool y$r_buff0_thd3; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0] [L724] 0 _Bool y$r_buff1_thd0; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0] [L725] 0 _Bool y$r_buff1_thd1; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0] [L726] 0 _Bool y$r_buff1_thd2; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0] [L727] 0 _Bool y$r_buff1_thd3; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0] [L728] 0 _Bool y$read_delayed; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0] [L729] 0 int *y$read_delayed_var; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}] [L730] 0 int y$w_buff0; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0] [L731] 0 _Bool y$w_buff0_used; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0] [L732] 0 int y$w_buff1; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0] [L733] 0 _Bool y$w_buff1_used; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L735] 0 int z = 0; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L736] 0 _Bool weak$$choice0; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L737] 0 _Bool weak$$choice2; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L813] 0 pthread_t t1507; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L814] FCALL, FORK 0 pthread_create(&t1507, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L815] 0 pthread_t t1508; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L816] FCALL, FORK 0 pthread_create(&t1508, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L817] 0 pthread_t t1509; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L818] FCALL, FORK 0 pthread_create(&t1509, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L776] 3 y$w_buff1 = y$w_buff0 [L777] 3 y$w_buff0 = 2 [L778] 3 y$w_buff1_used = y$w_buff0_used [L779] 3 y$w_buff0_used = (_Bool)1 [L18] COND FALSE 3 !(!expression) [L781] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L782] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L783] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L784] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L785] 3 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=0] [L788] 3 __unbuffered_p2_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=0] [L741] 1 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L744] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L756] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L759] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L791] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L791] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L792] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L792] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L793] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L793] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L794] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L794] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L795] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L795] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L749] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=1, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=1] [L762] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L762] EXPR 2 y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y [L762] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L762] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L763] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L763] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L764] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L764] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L765] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L765] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L766] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L766] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L769] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=2, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=1] [L798] 3 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=3, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=1] [L820] 0 main$tmp_guard0 = __unbuffered_cnt == 3 VAL [__unbuffered_cnt=3, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=1] [L3] COND FALSE 0 !(!cond) VAL [__unbuffered_cnt=3, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=1] [L824] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L824] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L824] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L824] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L825] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L825] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L826] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L826] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L827] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L827] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L828] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L828] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L831] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L832] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L833] 0 y$flush_delayed = weak$$choice2 [L834] 0 y$mem_tmp = y [L835] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L835] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L836] EXPR 0 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L836] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L837] EXPR 0 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L837] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L838] EXPR 0 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L838] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L839] EXPR 0 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L839] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L840] EXPR 0 weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L840] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L841] EXPR 0 weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L841] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L842] 0 main$tmp_guard1 = !(x == 2 && y == 2 && __unbuffered_p2_EAX == 0) [L843] EXPR 0 y$flush_delayed ? y$mem_tmp : y [L843] 0 y = y$flush_delayed ? y$mem_tmp : y [L844] 0 y$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=3, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=2, weak$$choice2=1, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=1] [L18] COND TRUE 0 !expression VAL [__unbuffered_cnt=3, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=2, weak$$choice2=1, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=1] [L18] 0 reach_error() VAL [__unbuffered_cnt=3, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=2, weak$$choice2=1, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 95 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 7.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 6880.3ms, OverallIterations: 16, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 4377.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 39.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 153 SDtfs, 539 SDslu, 591 SDs, 0 SdLazy, 1103 SolverSat, 285 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 927.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 235 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 2523.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=849occurred in iteration=11, InterpolantAutomatonStates: 184, 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: 65.9ms SsaConstructionTime, 393.9ms SatisfiabilityAnalysisTime, 1770.7ms InterpolantComputationTime, 1015 NumberOfCodeBlocks, 1015 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 928 ConstructedInterpolants, 0 QuantifiedInterpolants, 5255 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...