/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix057_power.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 20:14:46,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 20:14:46,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 20:14:46,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 20:14:46,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 20:14:46,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 20:14:46,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 20:14:46,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 20:14:46,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 20:14:46,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 20:14:46,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 20:14:46,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 20:14:46,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 20:14:46,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 20:14:46,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 20:14:46,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 20:14:46,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 20:14:46,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 20:14:46,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 20:14:46,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 20:14:46,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 20:14:46,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 20:14:46,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 20:14:46,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 20:14:46,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 20:14:46,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 20:14:46,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 20:14:46,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 20:14:46,683 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 20:14:46,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 20:14:46,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 20:14:46,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 20:14:46,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 20:14:46,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 20:14:46,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 20:14:46,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 20:14:46,686 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-SemanticLbe.epf [2021-03-11 20:14:46,712 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 20:14:46,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 20:14:46,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 20:14:46,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 20:14:46,716 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 20:14:46,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 20:14:46,716 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 20:14:46,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 20:14:46,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 20:14:46,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 20:14:46,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 20:14:46,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 20:14:46,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 20:14:46,717 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 20:14:46,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 20:14:46,717 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 20:14:46,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 20:14:46,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 20:14:46,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 20:14:46,718 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 20:14:46,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 20:14:46,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:14:46,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 20:14:46,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 20:14:46,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 20:14:46,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 20:14:46,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 20:14:46,718 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 20:14:46,719 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 20:14:46,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 20:14:46,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 20:14:46,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 20:14:46,963 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 20:14:46,963 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 20:14:46,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix057_power.opt.i [2021-03-11 20:14:47,016 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a75cd138/94046913e0cb451293d52b4db81d894b/FLAG1d9964b51 [2021-03-11 20:14:47,442 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 20:14:47,442 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix057_power.opt.i [2021-03-11 20:14:47,452 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a75cd138/94046913e0cb451293d52b4db81d894b/FLAG1d9964b51 [2021-03-11 20:14:47,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a75cd138/94046913e0cb451293d52b4db81d894b [2021-03-11 20:14:47,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 20:14:47,465 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 20:14:47,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 20:14:47,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 20:14:47,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 20:14:47,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:14:47" (1/1) ... [2021-03-11 20:14:47,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bf834f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:14:47, skipping insertion in model container [2021-03-11 20:14:47,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:14:47" (1/1) ... [2021-03-11 20:14:47,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 20:14:47,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 20:14:47,585 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/mix057_power.opt.i[950,963] [2021-03-11 20:14:47,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:14:47,748 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 20:14:47,756 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/mix057_power.opt.i[950,963] [2021-03-11 20:14:47,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:14:47,825 INFO L208 MainTranslator]: Completed translation [2021-03-11 20:14:47,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:14:47 WrapperNode [2021-03-11 20:14:47,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 20:14:47,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 20:14:47,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 20:14:47,826 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 20:14:47,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:14:47" (1/1) ... [2021-03-11 20:14:47,841 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:14:47" (1/1) ... [2021-03-11 20:14:47,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 20:14:47,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 20:14:47,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 20:14:47,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 20:14:47,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:14:47" (1/1) ... [2021-03-11 20:14:47,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:14:47" (1/1) ... [2021-03-11 20:14:47,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:14:47" (1/1) ... [2021-03-11 20:14:47,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:14:47" (1/1) ... [2021-03-11 20:14:47,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:14:47" (1/1) ... [2021-03-11 20:14:47,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:14:47" (1/1) ... [2021-03-11 20:14:47,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:14:47" (1/1) ... [2021-03-11 20:14:47,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 20:14:47,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 20:14:47,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 20:14:47,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 20:14:47,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:14:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:14:47,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 20:14:47,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 20:14:47,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 20:14:47,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 20:14:47,948 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 20:14:47,948 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 20:14:47,948 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 20:14:47,948 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 20:14:47,948 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 20:14:47,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 20:14:47,949 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-03-11 20:14:47,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-03-11 20:14:47,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 20:14:47,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 20:14:47,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 20:14:47,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 20:14:47,950 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 20:14:49,167 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 20:14:49,167 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-03-11 20:14:49,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:14:49 BoogieIcfgContainer [2021-03-11 20:14:49,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 20:14:49,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 20:14:49,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 20:14:49,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 20:14:49,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 08:14:47" (1/3) ... [2021-03-11 20:14:49,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e056d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:14:49, skipping insertion in model container [2021-03-11 20:14:49,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:14:47" (2/3) ... [2021-03-11 20:14:49,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e056d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:14:49, skipping insertion in model container [2021-03-11 20:14:49,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:14:49" (3/3) ... [2021-03-11 20:14:49,173 INFO L111 eAbstractionObserver]: Analyzing ICFG mix057_power.opt.i [2021-03-11 20:14:49,177 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 20:14:49,180 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-11 20:14:49,181 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 20:14:49,203 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,203 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,204 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,204 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,204 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,204 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,204 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,204 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,204 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,204 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,204 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,204 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,205 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,205 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,205 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,205 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,205 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,205 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,205 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,205 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,205 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,205 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,205 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,206 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,206 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,206 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,206 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,206 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,206 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,206 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,206 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,206 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,206 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,206 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,207 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,207 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,207 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,207 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,207 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,207 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,207 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,207 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,207 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,207 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,208 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,208 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,237 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,238 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,238 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,238 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,238 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,239 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,239 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,239 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,239 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,239 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,239 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,239 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,240 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,240 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,240 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,240 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,240 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,240 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,240 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,240 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,241 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,241 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,241 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,241 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,241 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,241 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,241 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,241 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,241 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,242 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,242 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,242 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,242 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,242 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,243 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,243 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,243 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,243 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,244 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,245 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,245 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,245 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,246 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,246 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,246 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,246 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,246 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,246 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,247 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,247 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,247 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,247 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,249 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,251 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,251 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,251 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,251 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,254 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,254 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,254 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,254 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,254 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,254 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,254 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,255 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,256 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,256 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,256 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:49,257 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 20:14:49,269 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-03-11 20:14:49,291 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 20:14:49,291 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 20:14:49,291 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 20:14:49,292 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 20:14:49,292 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 20:14:49,292 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 20:14:49,292 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 20:14:49,292 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 20:14:49,302 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 123 places, 112 transitions, 244 flow [2021-03-11 20:14:49,341 INFO L129 PetriNetUnfolder]: 2/108 cut-off events. [2021-03-11 20:14:49,341 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:14:49,350 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 108 events. 2/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2021-03-11 20:14:49,350 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 112 transitions, 244 flow [2021-03-11 20:14:49,354 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 108 transitions, 228 flow [2021-03-11 20:14:49,357 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 20:14:49,362 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 108 transitions, 228 flow [2021-03-11 20:14:49,365 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 108 transitions, 228 flow [2021-03-11 20:14:49,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 119 places, 108 transitions, 228 flow [2021-03-11 20:14:49,386 INFO L129 PetriNetUnfolder]: 2/108 cut-off events. [2021-03-11 20:14:49,386 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:14:49,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 108 events. 2/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2021-03-11 20:14:49,388 INFO L116 LiptonReduction]: Number of co-enabled transitions 2406 [2021-03-11 20:14:50,790 WARN L205 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 188 [2021-03-11 20:14:51,052 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2021-03-11 20:14:52,244 WARN L205 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 312 DAG size of output: 268 [2021-03-11 20:14:52,773 WARN L205 SmtUtils]: Spent 521.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2021-03-11 20:14:54,217 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2021-03-11 20:14:54,589 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 91 [2021-03-11 20:14:54,699 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-03-11 20:14:55,994 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 118 [2021-03-11 20:14:56,125 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-03-11 20:14:56,390 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 118 [2021-03-11 20:14:56,525 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-03-11 20:14:56,528 INFO L131 LiptonReduction]: Checked pairs total: 6239 [2021-03-11 20:14:56,528 INFO L133 LiptonReduction]: Total number of compositions: 91 [2021-03-11 20:14:56,530 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7176 [2021-03-11 20:14:56,539 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-11 20:14:56,539 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:14:56,539 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:56,540 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:56,540 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:56,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:56,545 INFO L82 PathProgramCache]: Analyzing trace with hash 92749097, now seen corresponding path program 1 times [2021-03-11 20:14:56,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:56,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011246357] [2021-03-11 20:14:56,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:56,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:56,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 20:14:56,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:56,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011246357] [2021-03-11 20:14:56,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:56,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:14:56,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759680728] [2021-03-11 20:14:56,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:14:56,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:56,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:14:56,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:14:56,790 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 203 [2021-03-11 20:14:56,792 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:56,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:56,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 203 [2021-03-11 20:14:56,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:56,849 INFO L129 PetriNetUnfolder]: 16/68 cut-off events. [2021-03-11 20:14:56,849 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:14:56,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 68 events. 16/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 213 event pairs, 2 based on Foata normal form. 6/72 useless extension candidates. Maximal degree in co-relation 105. Up to 27 conditions per place. [2021-03-11 20:14:56,851 INFO L132 encePairwiseOnDemand]: 199/203 looper letters, 7 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2021-03-11 20:14:56,851 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 30 transitions, 90 flow [2021-03-11 20:14:56,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:14:56,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:14:56,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 528 transitions. [2021-03-11 20:14:56,865 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8669950738916257 [2021-03-11 20:14:56,865 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 528 transitions. [2021-03-11 20:14:56,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 528 transitions. [2021-03-11 20:14:56,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:56,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 528 transitions. [2021-03-11 20:14:56,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:56,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:56,880 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:56,881 INFO L185 Difference]: Start difference. First operand has 41 places, 29 transitions, 70 flow. Second operand 3 states and 528 transitions. [2021-03-11 20:14:56,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 30 transitions, 90 flow [2021-03-11 20:14:56,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 30 transitions, 86 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-11 20:14:56,885 INFO L241 Difference]: Finished difference. Result has 38 places, 27 transitions, 66 flow [2021-03-11 20:14:56,886 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2021-03-11 20:14:56,887 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, -3 predicate places. [2021-03-11 20:14:56,887 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 66 flow [2021-03-11 20:14:56,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:56,887 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:56,887 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:56,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 20:14:56,888 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:56,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:56,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1424927287, now seen corresponding path program 1 times [2021-03-11 20:14:56,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:56,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194782018] [2021-03-11 20:14:56,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:56,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:56,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:14:57,002 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:14:57,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:14:57,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:57,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194782018] [2021-03-11 20:14:57,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:57,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:14:57,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533358474] [2021-03-11 20:14:57,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:14:57,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:57,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:14:57,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:14:57,008 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 203 [2021-03-11 20:14:57,010 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:57,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 203 [2021-03-11 20:14:57,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:57,044 INFO L129 PetriNetUnfolder]: 13/63 cut-off events. [2021-03-11 20:14:57,045 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:14:57,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 63 events. 13/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 179 event pairs, 2 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 98. Up to 15 conditions per place. [2021-03-11 20:14:57,045 INFO L132 encePairwiseOnDemand]: 197/203 looper letters, 4 selfloop transitions, 3 changer transitions 8/36 dead transitions. [2021-03-11 20:14:57,045 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 36 transitions, 114 flow [2021-03-11 20:14:57,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:14:57,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:14:57,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 872 transitions. [2021-03-11 20:14:57,047 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8591133004926108 [2021-03-11 20:14:57,047 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 872 transitions. [2021-03-11 20:14:57,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 872 transitions. [2021-03-11 20:14:57,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:57,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 872 transitions. [2021-03-11 20:14:57,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 174.4) internal successors, (872), 5 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,051 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,051 INFO L185 Difference]: Start difference. First operand has 38 places, 27 transitions, 66 flow. Second operand 5 states and 872 transitions. [2021-03-11 20:14:57,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 36 transitions, 114 flow [2021-03-11 20:14:57,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:14:57,052 INFO L241 Difference]: Finished difference. Result has 43 places, 28 transitions, 87 flow [2021-03-11 20:14:57,052 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=87, PETRI_PLACES=43, PETRI_TRANSITIONS=28} [2021-03-11 20:14:57,053 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2021-03-11 20:14:57,053 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 28 transitions, 87 flow [2021-03-11 20:14:57,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,053 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:57,053 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:57,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 20:14:57,054 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:57,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:57,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1223076667, now seen corresponding path program 1 times [2021-03-11 20:14:57,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:57,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996150729] [2021-03-11 20:14:57,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:57,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:57,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:14:57,130 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:14:57,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:14:57,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:57,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996150729] [2021-03-11 20:14:57,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:57,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:14:57,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390116710] [2021-03-11 20:14:57,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:14:57,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:57,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:14:57,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:14:57,136 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 203 [2021-03-11 20:14:57,137 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 28 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:57,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 203 [2021-03-11 20:14:57,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:57,163 INFO L129 PetriNetUnfolder]: 19/82 cut-off events. [2021-03-11 20:14:57,163 INFO L130 PetriNetUnfolder]: For 50/59 co-relation queries the response was YES. [2021-03-11 20:14:57,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 82 events. 19/82 cut-off events. For 50/59 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 292 event pairs, 6 based on Foata normal form. 5/81 useless extension candidates. Maximal degree in co-relation 170. Up to 26 conditions per place. [2021-03-11 20:14:57,164 INFO L132 encePairwiseOnDemand]: 198/203 looper letters, 4 selfloop transitions, 3 changer transitions 5/35 dead transitions. [2021-03-11 20:14:57,164 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 35 transitions, 127 flow [2021-03-11 20:14:57,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:14:57,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:14:57,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 869 transitions. [2021-03-11 20:14:57,166 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8561576354679803 [2021-03-11 20:14:57,166 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 869 transitions. [2021-03-11 20:14:57,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 869 transitions. [2021-03-11 20:14:57,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:57,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 869 transitions. [2021-03-11 20:14:57,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 173.8) internal successors, (869), 5 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,170 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,170 INFO L185 Difference]: Start difference. First operand has 43 places, 28 transitions, 87 flow. Second operand 5 states and 869 transitions. [2021-03-11 20:14:57,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 35 transitions, 127 flow [2021-03-11 20:14:57,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 35 transitions, 122 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-11 20:14:57,171 INFO L241 Difference]: Finished difference. Result has 45 places, 30 transitions, 109 flow [2021-03-11 20:14:57,171 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=109, PETRI_PLACES=45, PETRI_TRANSITIONS=30} [2021-03-11 20:14:57,171 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2021-03-11 20:14:57,171 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 30 transitions, 109 flow [2021-03-11 20:14:57,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,172 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:57,172 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:57,172 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 20:14:57,172 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:57,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:57,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1012850751, now seen corresponding path program 1 times [2021-03-11 20:14:57,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:57,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245538560] [2021-03-11 20:14:57,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:57,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:57,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:14:57,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:57,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:14:57,202 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:14:57,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:14:57,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:57,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245538560] [2021-03-11 20:14:57,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:57,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:14:57,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523554665] [2021-03-11 20:14:57,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:14:57,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:57,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:14:57,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:14:57,207 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 203 [2021-03-11 20:14:57,208 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 30 transitions, 109 flow. Second operand has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:57,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 203 [2021-03-11 20:14:57,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:57,232 INFO L129 PetriNetUnfolder]: 11/80 cut-off events. [2021-03-11 20:14:57,232 INFO L130 PetriNetUnfolder]: For 91/126 co-relation queries the response was YES. [2021-03-11 20:14:57,233 INFO L84 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 80 events. 11/80 cut-off events. For 91/126 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 322 event pairs, 2 based on Foata normal form. 8/82 useless extension candidates. Maximal degree in co-relation 199. Up to 23 conditions per place. [2021-03-11 20:14:57,233 INFO L132 encePairwiseOnDemand]: 199/203 looper letters, 5 selfloop transitions, 3 changer transitions 2/33 dead transitions. [2021-03-11 20:14:57,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 33 transitions, 149 flow [2021-03-11 20:14:57,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:14:57,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:14:57,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 866 transitions. [2021-03-11 20:14:57,235 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8532019704433498 [2021-03-11 20:14:57,235 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 866 transitions. [2021-03-11 20:14:57,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 866 transitions. [2021-03-11 20:14:57,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:57,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 866 transitions. [2021-03-11 20:14:57,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 173.2) internal successors, (866), 5 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,239 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,239 INFO L185 Difference]: Start difference. First operand has 45 places, 30 transitions, 109 flow. Second operand 5 states and 866 transitions. [2021-03-11 20:14:57,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 33 transitions, 149 flow [2021-03-11 20:14:57,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 33 transitions, 138 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-03-11 20:14:57,240 INFO L241 Difference]: Finished difference. Result has 48 places, 30 transitions, 117 flow [2021-03-11 20:14:57,240 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=48, PETRI_TRANSITIONS=30} [2021-03-11 20:14:57,241 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 7 predicate places. [2021-03-11 20:14:57,241 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 30 transitions, 117 flow [2021-03-11 20:14:57,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,241 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:57,241 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:57,241 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 20:14:57,241 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:57,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:57,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1667504759, now seen corresponding path program 1 times [2021-03-11 20:14:57,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:57,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072655862] [2021-03-11 20:14:57,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:57,287 INFO L142 QuantifierPusher]: treesize reduction 15, result has 48.3 percent of original size [2021-03-11 20:14:57,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 20:14:57,294 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-03-11 20:14:57,295 INFO L147 QuantifierPusher]: treesize reduction 5, result has 75.0 percent of original size 15 [2021-03-11 20:14:57,309 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:14:57,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:14:57,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:57,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072655862] [2021-03-11 20:14:57,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:57,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:14:57,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844827344] [2021-03-11 20:14:57,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:14:57,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:57,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:14:57,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:14:57,314 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 203 [2021-03-11 20:14:57,315 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 30 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 153.8) internal successors, (769), 5 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,315 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:57,315 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 203 [2021-03-11 20:14:57,315 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:57,414 INFO L129 PetriNetUnfolder]: 246/533 cut-off events. [2021-03-11 20:14:57,414 INFO L130 PetriNetUnfolder]: For 1482/1556 co-relation queries the response was YES. [2021-03-11 20:14:57,416 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1500 conditions, 533 events. 246/533 cut-off events. For 1482/1556 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3210 event pairs, 157 based on Foata normal form. 42/537 useless extension candidates. Maximal degree in co-relation 1483. Up to 291 conditions per place. [2021-03-11 20:14:57,419 INFO L132 encePairwiseOnDemand]: 197/203 looper letters, 7 selfloop transitions, 6 changer transitions 7/42 dead transitions. [2021-03-11 20:14:57,419 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 187 flow [2021-03-11 20:14:57,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 20:14:57,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 20:14:57,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 940 transitions. [2021-03-11 20:14:57,421 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7717569786535303 [2021-03-11 20:14:57,421 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 940 transitions. [2021-03-11 20:14:57,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 940 transitions. [2021-03-11 20:14:57,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:57,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 940 transitions. [2021-03-11 20:14:57,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 156.66666666666666) internal successors, (940), 6 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,425 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,425 INFO L185 Difference]: Start difference. First operand has 48 places, 30 transitions, 117 flow. Second operand 6 states and 940 transitions. [2021-03-11 20:14:57,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 187 flow [2021-03-11 20:14:57,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 42 transitions, 178 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-11 20:14:57,428 INFO L241 Difference]: Finished difference. Result has 52 places, 35 transitions, 149 flow [2021-03-11 20:14:57,428 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=149, PETRI_PLACES=52, PETRI_TRANSITIONS=35} [2021-03-11 20:14:57,429 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2021-03-11 20:14:57,429 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 35 transitions, 149 flow [2021-03-11 20:14:57,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 153.8) internal successors, (769), 5 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,429 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:57,429 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:57,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 20:14:57,429 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:57,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:57,430 INFO L82 PathProgramCache]: Analyzing trace with hash -187053725, now seen corresponding path program 1 times [2021-03-11 20:14:57,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:57,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551278665] [2021-03-11 20:14:57,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:57,476 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size [2021-03-11 20:14:57,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 20:14:57,495 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size [2021-03-11 20:14:57,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 20:14:57,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:57,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 20:14:57,523 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:14:57,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:14:57,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:57,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551278665] [2021-03-11 20:14:57,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:57,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:14:57,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831050071] [2021-03-11 20:14:57,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:14:57,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:57,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:14:57,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:14:57,530 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 203 [2021-03-11 20:14:57,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 35 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 151.83333333333334) internal successors, (911), 6 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:57,531 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 203 [2021-03-11 20:14:57,531 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:57,650 INFO L129 PetriNetUnfolder]: 194/438 cut-off events. [2021-03-11 20:14:57,650 INFO L130 PetriNetUnfolder]: For 1175/1232 co-relation queries the response was YES. [2021-03-11 20:14:57,652 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1353 conditions, 438 events. 194/438 cut-off events. For 1175/1232 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2525 event pairs, 63 based on Foata normal form. 39/448 useless extension candidates. Maximal degree in co-relation 1333. Up to 216 conditions per place. [2021-03-11 20:14:57,653 INFO L132 encePairwiseOnDemand]: 198/203 looper letters, 9 selfloop transitions, 6 changer transitions 5/42 dead transitions. [2021-03-11 20:14:57,653 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 42 transitions, 215 flow [2021-03-11 20:14:57,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 20:14:57,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 20:14:57,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 926 transitions. [2021-03-11 20:14:57,656 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7602627257799671 [2021-03-11 20:14:57,656 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 926 transitions. [2021-03-11 20:14:57,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 926 transitions. [2021-03-11 20:14:57,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:57,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 926 transitions. [2021-03-11 20:14:57,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 154.33333333333334) internal successors, (926), 6 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,659 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,659 INFO L185 Difference]: Start difference. First operand has 52 places, 35 transitions, 149 flow. Second operand 6 states and 926 transitions. [2021-03-11 20:14:57,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 42 transitions, 215 flow [2021-03-11 20:14:57,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 42 transitions, 211 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-11 20:14:57,662 INFO L241 Difference]: Finished difference. Result has 56 places, 35 transitions, 166 flow [2021-03-11 20:14:57,662 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=166, PETRI_PLACES=56, PETRI_TRANSITIONS=35} [2021-03-11 20:14:57,662 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2021-03-11 20:14:57,662 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 35 transitions, 166 flow [2021-03-11 20:14:57,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 151.83333333333334) internal successors, (911), 6 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,663 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:57,663 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:57,663 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 20:14:57,663 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:57,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:57,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1823530859, now seen corresponding path program 1 times [2021-03-11 20:14:57,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:57,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851511062] [2021-03-11 20:14:57,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:57,706 INFO L142 QuantifierPusher]: treesize reduction 30, result has 30.2 percent of original size [2021-03-11 20:14:57,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:14:57,713 INFO L142 QuantifierPusher]: treesize reduction 41, result has 51.2 percent of original size [2021-03-11 20:14:57,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 20:14:57,749 INFO L142 QuantifierPusher]: treesize reduction 11, result has 77.1 percent of original size [2021-03-11 20:14:57,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 20:14:57,769 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:14:57,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:14:57,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:57,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851511062] [2021-03-11 20:14:57,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:57,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:14:57,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446426452] [2021-03-11 20:14:57,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:14:57,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:57,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:14:57,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:14:57,776 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 203 [2021-03-11 20:14:57,777 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 35 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:57,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 203 [2021-03-11 20:14:57,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:57,887 INFO L129 PetriNetUnfolder]: 156/375 cut-off events. [2021-03-11 20:14:57,887 INFO L130 PetriNetUnfolder]: For 1165/1220 co-relation queries the response was YES. [2021-03-11 20:14:57,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1199 conditions, 375 events. 156/375 cut-off events. For 1165/1220 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2218 event pairs, 92 based on Foata normal form. 35/379 useless extension candidates. Maximal degree in co-relation 1176. Up to 197 conditions per place. [2021-03-11 20:14:57,891 INFO L132 encePairwiseOnDemand]: 197/203 looper letters, 9 selfloop transitions, 7 changer transitions 6/44 dead transitions. [2021-03-11 20:14:57,891 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 44 transitions, 246 flow [2021-03-11 20:14:57,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 20:14:57,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 20:14:57,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 922 transitions. [2021-03-11 20:14:57,893 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7569786535303776 [2021-03-11 20:14:57,893 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 922 transitions. [2021-03-11 20:14:57,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 922 transitions. [2021-03-11 20:14:57,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:57,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 922 transitions. [2021-03-11 20:14:57,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 153.66666666666666) internal successors, (922), 6 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,897 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,897 INFO L185 Difference]: Start difference. First operand has 56 places, 35 transitions, 166 flow. Second operand 6 states and 922 transitions. [2021-03-11 20:14:57,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 44 transitions, 246 flow [2021-03-11 20:14:57,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 44 transitions, 231 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-03-11 20:14:57,900 INFO L241 Difference]: Finished difference. Result has 58 places, 37 transitions, 189 flow [2021-03-11 20:14:57,901 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=58, PETRI_TRANSITIONS=37} [2021-03-11 20:14:57,901 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 17 predicate places. [2021-03-11 20:14:57,901 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 37 transitions, 189 flow [2021-03-11 20:14:57,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:57,902 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:57,902 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:57,902 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 20:14:57,902 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:57,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:57,902 INFO L82 PathProgramCache]: Analyzing trace with hash -918520257, now seen corresponding path program 1 times [2021-03-11 20:14:57,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:57,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763661332] [2021-03-11 20:14:57,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:57,982 INFO L142 QuantifierPusher]: treesize reduction 40, result has 25.9 percent of original size [2021-03-11 20:14:57,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 20:14:57,991 INFO L142 QuantifierPusher]: treesize reduction 40, result has 29.8 percent of original size [2021-03-11 20:14:57,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:14:58,001 INFO L142 QuantifierPusher]: treesize reduction 11, result has 77.1 percent of original size [2021-03-11 20:14:58,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 20:14:58,019 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-03-11 20:14:58,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 20:14:58,040 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:14:58,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:14:58,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:58,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763661332] [2021-03-11 20:14:58,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:58,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 20:14:58,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093015064] [2021-03-11 20:14:58,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 20:14:58,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:58,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 20:14:58,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-11 20:14:58,047 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 203 [2021-03-11 20:14:58,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 37 transitions, 189 flow. Second operand has 7 states, 7 states have (on average 149.85714285714286) internal successors, (1049), 7 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:58,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:58,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 203 [2021-03-11 20:14:58,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:58,157 INFO L129 PetriNetUnfolder]: 161/378 cut-off events. [2021-03-11 20:14:58,157 INFO L130 PetriNetUnfolder]: For 1239/1281 co-relation queries the response was YES. [2021-03-11 20:14:58,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1359 conditions, 378 events. 161/378 cut-off events. For 1239/1281 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2147 event pairs, 37 based on Foata normal form. 28/383 useless extension candidates. Maximal degree in co-relation 1335. Up to 191 conditions per place. [2021-03-11 20:14:58,161 INFO L132 encePairwiseOnDemand]: 195/203 looper letters, 11 selfloop transitions, 11 changer transitions 3/47 dead transitions. [2021-03-11 20:14:58,161 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 47 transitions, 287 flow [2021-03-11 20:14:58,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 20:14:58,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 20:14:58,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 914 transitions. [2021-03-11 20:14:58,163 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7504105090311987 [2021-03-11 20:14:58,163 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 914 transitions. [2021-03-11 20:14:58,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 914 transitions. [2021-03-11 20:14:58,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:58,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 914 transitions. [2021-03-11 20:14:58,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 152.33333333333334) internal successors, (914), 6 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:58,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:58,166 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:58,166 INFO L185 Difference]: Start difference. First operand has 58 places, 37 transitions, 189 flow. Second operand 6 states and 914 transitions. [2021-03-11 20:14:58,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 47 transitions, 287 flow [2021-03-11 20:14:58,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 47 transitions, 273 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-03-11 20:14:58,170 INFO L241 Difference]: Finished difference. Result has 60 places, 42 transitions, 229 flow [2021-03-11 20:14:58,170 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=229, PETRI_PLACES=60, PETRI_TRANSITIONS=42} [2021-03-11 20:14:58,170 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 19 predicate places. [2021-03-11 20:14:58,171 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 42 transitions, 229 flow [2021-03-11 20:14:58,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 149.85714285714286) internal successors, (1049), 7 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:58,171 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:58,171 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:58,171 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 20:14:58,171 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:58,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:58,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1841929939, now seen corresponding path program 2 times [2021-03-11 20:14:58,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:58,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569772479] [2021-03-11 20:14:58,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:58,251 INFO L142 QuantifierPusher]: treesize reduction 30, result has 30.2 percent of original size [2021-03-11 20:14:58,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:14:58,258 INFO L142 QuantifierPusher]: treesize reduction 30, result has 34.8 percent of original size [2021-03-11 20:14:58,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 20:14:58,274 INFO L142 QuantifierPusher]: treesize reduction 71, result has 41.3 percent of original size [2021-03-11 20:14:58,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-11 20:14:58,297 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-03-11 20:14:58,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 20:14:58,313 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:14:58,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:14:58,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:58,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569772479] [2021-03-11 20:14:58,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:58,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 20:14:58,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966901214] [2021-03-11 20:14:58,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 20:14:58,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:58,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 20:14:58,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-11 20:14:58,321 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 203 [2021-03-11 20:14:58,322 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 42 transitions, 229 flow. Second operand has 7 states, 7 states have (on average 151.85714285714286) internal successors, (1063), 7 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:58,322 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:58,322 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 203 [2021-03-11 20:14:58,322 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:58,442 INFO L129 PetriNetUnfolder]: 170/387 cut-off events. [2021-03-11 20:14:58,442 INFO L130 PetriNetUnfolder]: For 1394/1436 co-relation queries the response was YES. [2021-03-11 20:14:58,444 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1596 conditions, 387 events. 170/387 cut-off events. For 1394/1436 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2104 event pairs, 39 based on Foata normal form. 29/393 useless extension candidates. Maximal degree in co-relation 1571. Up to 203 conditions per place. [2021-03-11 20:14:58,446 INFO L132 encePairwiseOnDemand]: 195/203 looper letters, 14 selfloop transitions, 14 changer transitions 5/55 dead transitions. [2021-03-11 20:14:58,446 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 55 transitions, 384 flow [2021-03-11 20:14:58,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:14:58,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:14:58,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1081 transitions. [2021-03-11 20:14:58,448 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7607318789584799 [2021-03-11 20:14:58,448 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1081 transitions. [2021-03-11 20:14:58,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1081 transitions. [2021-03-11 20:14:58,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:58,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1081 transitions. [2021-03-11 20:14:58,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 154.42857142857142) internal successors, (1081), 7 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:58,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:58,453 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:58,453 INFO L185 Difference]: Start difference. First operand has 60 places, 42 transitions, 229 flow. Second operand 7 states and 1081 transitions. [2021-03-11 20:14:58,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 55 transitions, 384 flow [2021-03-11 20:14:58,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 55 transitions, 372 flow, removed 6 selfloop flow, removed 1 redundant places. [2021-03-11 20:14:58,457 INFO L241 Difference]: Finished difference. Result has 68 places, 49 transitions, 320 flow [2021-03-11 20:14:58,457 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=320, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2021-03-11 20:14:58,458 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 27 predicate places. [2021-03-11 20:14:58,458 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 320 flow [2021-03-11 20:14:58,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 151.85714285714286) internal successors, (1063), 7 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:58,458 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:58,458 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:58,458 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 20:14:58,459 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:58,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:58,459 INFO L82 PathProgramCache]: Analyzing trace with hash -2036858261, now seen corresponding path program 3 times [2021-03-11 20:14:58,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:58,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959071390] [2021-03-11 20:14:58,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:58,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:58,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:14:58,514 INFO L142 QuantifierPusher]: treesize reduction 52, result has 44.7 percent of original size [2021-03-11 20:14:58,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-03-11 20:14:58,530 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-11 20:14:58,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 20:14:58,550 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size [2021-03-11 20:14:58,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 20:14:58,572 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:14:58,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:14:58,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:58,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959071390] [2021-03-11 20:14:58,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:58,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 20:14:58,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809875389] [2021-03-11 20:14:58,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 20:14:58,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:58,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 20:14:58,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-11 20:14:58,580 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 203 [2021-03-11 20:14:58,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 320 flow. Second operand has 7 states, 7 states have (on average 151.85714285714286) internal successors, (1063), 7 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:58,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:58,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 203 [2021-03-11 20:14:58,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:58,769 INFO L129 PetriNetUnfolder]: 166/417 cut-off events. [2021-03-11 20:14:58,769 INFO L130 PetriNetUnfolder]: For 2410/2460 co-relation queries the response was YES. [2021-03-11 20:14:58,771 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2053 conditions, 417 events. 166/417 cut-off events. For 2410/2460 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2508 event pairs, 34 based on Foata normal form. 45/435 useless extension candidates. Maximal degree in co-relation 2023. Up to 156 conditions per place. [2021-03-11 20:14:58,774 INFO L132 encePairwiseOnDemand]: 196/203 looper letters, 14 selfloop transitions, 18 changer transitions 5/59 dead transitions. [2021-03-11 20:14:58,774 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 59 transitions, 500 flow [2021-03-11 20:14:58,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 20:14:58,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 20:14:58,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1232 transitions. [2021-03-11 20:14:58,776 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7586206896551724 [2021-03-11 20:14:58,776 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1232 transitions. [2021-03-11 20:14:58,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1232 transitions. [2021-03-11 20:14:58,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:58,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1232 transitions. [2021-03-11 20:14:58,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:58,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:58,780 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:58,780 INFO L185 Difference]: Start difference. First operand has 68 places, 49 transitions, 320 flow. Second operand 8 states and 1232 transitions. [2021-03-11 20:14:58,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 59 transitions, 500 flow [2021-03-11 20:14:58,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 59 transitions, 479 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-11 20:14:58,785 INFO L241 Difference]: Finished difference. Result has 74 places, 51 transitions, 384 flow [2021-03-11 20:14:58,785 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=384, PETRI_PLACES=74, PETRI_TRANSITIONS=51} [2021-03-11 20:14:58,785 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 33 predicate places. [2021-03-11 20:14:58,785 INFO L480 AbstractCegarLoop]: Abstraction has has 74 places, 51 transitions, 384 flow [2021-03-11 20:14:58,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 151.85714285714286) internal successors, (1063), 7 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:58,786 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:58,786 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:58,786 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 20:14:58,786 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:58,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:58,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1894365756, now seen corresponding path program 1 times [2021-03-11 20:14:58,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:58,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831246661] [2021-03-11 20:14:58,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:58,861 INFO L142 QuantifierPusher]: treesize reduction 30, result has 30.2 percent of original size [2021-03-11 20:14:58,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:14:58,869 INFO L142 QuantifierPusher]: treesize reduction 30, result has 34.8 percent of original size [2021-03-11 20:14:58,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 20:14:58,877 INFO L142 QuantifierPusher]: treesize reduction 27, result has 56.5 percent of original size [2021-03-11 20:14:58,878 INFO L147 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size 17 [2021-03-11 20:14:58,893 INFO L142 QuantifierPusher]: treesize reduction 11, result has 82.5 percent of original size [2021-03-11 20:14:58,894 INFO L147 QuantifierPusher]: treesize reduction 16, result has 69.2 percent of original size 36 [2021-03-11 20:14:58,920 INFO L142 QuantifierPusher]: treesize reduction 11, result has 81.4 percent of original size [2021-03-11 20:14:58,920 INFO L147 QuantifierPusher]: treesize reduction 5, result has 89.6 percent of original size 43 [2021-03-11 20:14:58,946 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:14:58,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:14:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:58,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831246661] [2021-03-11 20:14:58,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:58,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 20:14:58,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273512863] [2021-03-11 20:14:58,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 20:14:58,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:58,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 20:14:58,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-11 20:14:58,956 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 203 [2021-03-11 20:14:58,956 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 51 transitions, 384 flow. Second operand has 8 states, 8 states have (on average 150.875) internal successors, (1207), 8 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:58,956 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:58,956 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 203 [2021-03-11 20:14:58,956 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:59,141 INFO L129 PetriNetUnfolder]: 155/378 cut-off events. [2021-03-11 20:14:59,142 INFO L130 PetriNetUnfolder]: For 2859/2902 co-relation queries the response was YES. [2021-03-11 20:14:59,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2135 conditions, 378 events. 155/378 cut-off events. For 2859/2902 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2136 event pairs, 33 based on Foata normal form. 22/376 useless extension candidates. Maximal degree in co-relation 2102. Up to 205 conditions per place. [2021-03-11 20:14:59,146 INFO L132 encePairwiseOnDemand]: 195/203 looper letters, 16 selfloop transitions, 16 changer transitions 2/56 dead transitions. [2021-03-11 20:14:59,146 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 56 transitions, 520 flow [2021-03-11 20:14:59,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 20:14:59,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 20:14:59,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1224 transitions. [2021-03-11 20:14:59,149 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7536945812807881 [2021-03-11 20:14:59,149 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1224 transitions. [2021-03-11 20:14:59,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1224 transitions. [2021-03-11 20:14:59,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:59,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1224 transitions. [2021-03-11 20:14:59,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:59,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:59,153 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:59,153 INFO L185 Difference]: Start difference. First operand has 74 places, 51 transitions, 384 flow. Second operand 8 states and 1224 transitions. [2021-03-11 20:14:59,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 56 transitions, 520 flow [2021-03-11 20:14:59,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 56 transitions, 476 flow, removed 14 selfloop flow, removed 6 redundant places. [2021-03-11 20:14:59,159 INFO L241 Difference]: Finished difference. Result has 76 places, 52 transitions, 409 flow [2021-03-11 20:14:59,160 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=409, PETRI_PLACES=76, PETRI_TRANSITIONS=52} [2021-03-11 20:14:59,160 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 35 predicate places. [2021-03-11 20:14:59,160 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 52 transitions, 409 flow [2021-03-11 20:14:59,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 150.875) internal successors, (1207), 8 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:59,161 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:59,161 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:59,161 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 20:14:59,161 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:59,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:59,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1265202214, now seen corresponding path program 2 times [2021-03-11 20:14:59,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:59,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584518124] [2021-03-11 20:14:59,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:59,243 INFO L142 QuantifierPusher]: treesize reduction 30, result has 30.2 percent of original size [2021-03-11 20:14:59,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:14:59,250 INFO L142 QuantifierPusher]: treesize reduction 30, result has 34.8 percent of original size [2021-03-11 20:14:59,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 20:14:59,263 INFO L142 QuantifierPusher]: treesize reduction 41, result has 56.4 percent of original size [2021-03-11 20:14:59,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 20:14:59,296 INFO L142 QuantifierPusher]: treesize reduction 11, result has 81.7 percent of original size [2021-03-11 20:14:59,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 20:14:59,322 INFO L142 QuantifierPusher]: treesize reduction 11, result has 79.6 percent of original size [2021-03-11 20:14:59,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 20:14:59,342 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:14:59,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:14:59,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:59,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584518124] [2021-03-11 20:14:59,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:59,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 20:14:59,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130152589] [2021-03-11 20:14:59,349 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 20:14:59,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:59,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 20:14:59,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-11 20:14:59,351 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 203 [2021-03-11 20:14:59,351 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 52 transitions, 409 flow. Second operand has 8 states, 8 states have (on average 145.875) internal successors, (1167), 8 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:59,351 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:59,351 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 203 [2021-03-11 20:14:59,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:59,485 INFO L129 PetriNetUnfolder]: 155/384 cut-off events. [2021-03-11 20:14:59,486 INFO L130 PetriNetUnfolder]: For 2737/2780 co-relation queries the response was YES. [2021-03-11 20:14:59,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2147 conditions, 384 events. 155/384 cut-off events. For 2737/2780 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2198 event pairs, 33 based on Foata normal form. 22/382 useless extension candidates. Maximal degree in co-relation 2114. Up to 205 conditions per place. [2021-03-11 20:14:59,490 INFO L132 encePairwiseOnDemand]: 195/203 looper letters, 19 selfloop transitions, 14 changer transitions 2/57 dead transitions. [2021-03-11 20:14:59,490 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 57 transitions, 547 flow [2021-03-11 20:14:59,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:14:59,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:14:59,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1036 transitions. [2021-03-11 20:14:59,492 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.729064039408867 [2021-03-11 20:14:59,492 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1036 transitions. [2021-03-11 20:14:59,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1036 transitions. [2021-03-11 20:14:59,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:59,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1036 transitions. [2021-03-11 20:14:59,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 148.0) internal successors, (1036), 7 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:59,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:59,496 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:59,496 INFO L185 Difference]: Start difference. First operand has 76 places, 52 transitions, 409 flow. Second operand 7 states and 1036 transitions. [2021-03-11 20:14:59,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 57 transitions, 547 flow [2021-03-11 20:14:59,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 57 transitions, 506 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-03-11 20:14:59,502 INFO L241 Difference]: Finished difference. Result has 78 places, 53 transitions, 429 flow [2021-03-11 20:14:59,502 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=429, PETRI_PLACES=78, PETRI_TRANSITIONS=53} [2021-03-11 20:14:59,502 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 37 predicate places. [2021-03-11 20:14:59,502 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 53 transitions, 429 flow [2021-03-11 20:14:59,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 145.875) internal successors, (1167), 8 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:59,512 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:59,512 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:59,512 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-11 20:14:59,512 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:59,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:59,513 INFO L82 PathProgramCache]: Analyzing trace with hash -286536444, now seen corresponding path program 3 times [2021-03-11 20:14:59,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:59,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100152419] [2021-03-11 20:14:59,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:59,576 INFO L142 QuantifierPusher]: treesize reduction 16, result has 74.2 percent of original size [2021-03-11 20:14:59,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 20:14:59,600 INFO L142 QuantifierPusher]: treesize reduction 16, result has 75.4 percent of original size [2021-03-11 20:14:59,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 20:14:59,632 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.4 percent of original size [2021-03-11 20:14:59,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 20:14:59,654 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.9 percent of original size [2021-03-11 20:14:59,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 20:14:59,681 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.6 percent of original size [2021-03-11 20:14:59,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 20:14:59,702 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:14:59,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:14:59,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:59,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100152419] [2021-03-11 20:14:59,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:59,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 20:14:59,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635184724] [2021-03-11 20:14:59,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 20:14:59,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:59,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 20:14:59,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 20:14:59,710 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 203 [2021-03-11 20:14:59,711 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 53 transitions, 429 flow. Second operand has 8 states, 8 states have (on average 142.875) internal successors, (1143), 8 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:59,711 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:59,711 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 203 [2021-03-11 20:14:59,711 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:59,830 INFO L129 PetriNetUnfolder]: 155/393 cut-off events. [2021-03-11 20:14:59,831 INFO L130 PetriNetUnfolder]: For 3162/3205 co-relation queries the response was YES. [2021-03-11 20:14:59,833 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2230 conditions, 393 events. 155/393 cut-off events. For 3162/3205 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2304 event pairs, 36 based on Foata normal form. 22/391 useless extension candidates. Maximal degree in co-relation 2196. Up to 193 conditions per place. [2021-03-11 20:14:59,835 INFO L132 encePairwiseOnDemand]: 197/203 looper letters, 20 selfloop transitions, 15 changer transitions 2/59 dead transitions. [2021-03-11 20:14:59,835 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 59 transitions, 590 flow [2021-03-11 20:14:59,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:14:59,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:14:59,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1014 transitions. [2021-03-11 20:14:59,837 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7135819845179451 [2021-03-11 20:14:59,837 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1014 transitions. [2021-03-11 20:14:59,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1014 transitions. [2021-03-11 20:14:59,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:59,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1014 transitions. [2021-03-11 20:14:59,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 144.85714285714286) internal successors, (1014), 7 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:59,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:59,840 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:59,840 INFO L185 Difference]: Start difference. First operand has 78 places, 53 transitions, 429 flow. Second operand 7 states and 1014 transitions. [2021-03-11 20:14:59,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 59 transitions, 590 flow [2021-03-11 20:14:59,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 59 transitions, 541 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-03-11 20:14:59,846 INFO L241 Difference]: Finished difference. Result has 80 places, 55 transitions, 469 flow [2021-03-11 20:14:59,846 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=469, PETRI_PLACES=80, PETRI_TRANSITIONS=55} [2021-03-11 20:14:59,846 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 39 predicate places. [2021-03-11 20:14:59,847 INFO L480 AbstractCegarLoop]: Abstraction has has 80 places, 55 transitions, 469 flow [2021-03-11 20:14:59,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 142.875) internal successors, (1143), 8 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:59,847 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:59,847 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:59,847 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-11 20:14:59,847 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:59,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:59,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1415187930, now seen corresponding path program 1 times [2021-03-11 20:14:59,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:59,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916748947] [2021-03-11 20:14:59,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:59,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:59,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:14:59,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:59,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:14:59,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:59,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:14:59,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:59,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916748947] [2021-03-11 20:14:59,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:59,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:14:59,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52311307] [2021-03-11 20:14:59,906 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:14:59,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:59,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:14:59,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:14:59,906 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 203 [2021-03-11 20:14:59,907 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 55 transitions, 469 flow. Second operand has 4 states, 4 states have (on average 164.75) internal successors, (659), 4 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:14:59,907 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:59,907 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 203 [2021-03-11 20:14:59,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:15:00,079 INFO L129 PetriNetUnfolder]: 891/1693 cut-off events. [2021-03-11 20:15:00,079 INFO L130 PetriNetUnfolder]: For 10986/11643 co-relation queries the response was YES. [2021-03-11 20:15:00,089 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7149 conditions, 1693 events. 891/1693 cut-off events. For 10986/11643 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 12091 event pairs, 142 based on Foata normal form. 211/1665 useless extension candidates. Maximal degree in co-relation 7114. Up to 596 conditions per place. [2021-03-11 20:15:00,098 INFO L132 encePairwiseOnDemand]: 196/203 looper letters, 13 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2021-03-11 20:15:00,098 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 64 transitions, 525 flow [2021-03-11 20:15:00,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:15:00,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:15:00,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 674 transitions. [2021-03-11 20:15:00,100 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8300492610837439 [2021-03-11 20:15:00,100 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 674 transitions. [2021-03-11 20:15:00,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 674 transitions. [2021-03-11 20:15:00,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:15:00,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 674 transitions. [2021-03-11 20:15:00,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 168.5) internal successors, (674), 4 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:00,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:00,103 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:00,103 INFO L185 Difference]: Start difference. First operand has 80 places, 55 transitions, 469 flow. Second operand 4 states and 674 transitions. [2021-03-11 20:15:00,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 64 transitions, 525 flow [2021-03-11 20:15:00,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 64 transitions, 485 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-03-11 20:15:00,115 INFO L241 Difference]: Finished difference. Result has 78 places, 60 transitions, 487 flow [2021-03-11 20:15:00,115 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=487, PETRI_PLACES=78, PETRI_TRANSITIONS=60} [2021-03-11 20:15:00,115 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 37 predicate places. [2021-03-11 20:15:00,115 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 60 transitions, 487 flow [2021-03-11 20:15:00,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 164.75) internal successors, (659), 4 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:00,116 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:00,116 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:15:00,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-11 20:15:00,116 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:00,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:00,116 INFO L82 PathProgramCache]: Analyzing trace with hash 578195232, now seen corresponding path program 1 times [2021-03-11 20:15:00,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:00,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014559987] [2021-03-11 20:15:00,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:15:00,165 INFO L142 QuantifierPusher]: treesize reduction 30, result has 30.2 percent of original size [2021-03-11 20:15:00,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:15:00,190 INFO L142 QuantifierPusher]: treesize reduction 45, result has 30.8 percent of original size [2021-03-11 20:15:00,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-11 20:15:00,202 INFO L142 QuantifierPusher]: treesize reduction 45, result has 34.8 percent of original size [2021-03-11 20:15:00,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 20:15:00,212 INFO L142 QuantifierPusher]: treesize reduction 45, result has 28.6 percent of original size [2021-03-11 20:15:00,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 20:15:00,225 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.9 percent of original size [2021-03-11 20:15:00,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 20:15:00,247 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:15:00,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:15:00,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:15:00,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014559987] [2021-03-11 20:15:00,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:15:00,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 20:15:00,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488855433] [2021-03-11 20:15:00,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 20:15:00,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:15:00,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 20:15:00,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-11 20:15:00,255 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 203 [2021-03-11 20:15:00,256 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 60 transitions, 487 flow. Second operand has 8 states, 8 states have (on average 147.875) internal successors, (1183), 8 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:00,256 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:15:00,256 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 203 [2021-03-11 20:15:00,256 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:15:00,504 INFO L129 PetriNetUnfolder]: 898/1846 cut-off events. [2021-03-11 20:15:00,504 INFO L130 PetriNetUnfolder]: For 10451/11656 co-relation queries the response was YES. [2021-03-11 20:15:00,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7896 conditions, 1846 events. 898/1846 cut-off events. For 10451/11656 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 14796 event pairs, 290 based on Foata normal form. 90/1620 useless extension candidates. Maximal degree in co-relation 7861. Up to 1122 conditions per place. [2021-03-11 20:15:00,523 INFO L132 encePairwiseOnDemand]: 197/203 looper letters, 26 selfloop transitions, 12 changer transitions 0/65 dead transitions. [2021-03-11 20:15:00,523 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 65 transitions, 631 flow [2021-03-11 20:15:00,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:15:00,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:15:00,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1048 transitions. [2021-03-11 20:15:00,525 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7375087966220971 [2021-03-11 20:15:00,525 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1048 transitions. [2021-03-11 20:15:00,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1048 transitions. [2021-03-11 20:15:00,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:15:00,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1048 transitions. [2021-03-11 20:15:00,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 149.71428571428572) internal successors, (1048), 7 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:00,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:00,529 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:00,529 INFO L185 Difference]: Start difference. First operand has 78 places, 60 transitions, 487 flow. Second operand 7 states and 1048 transitions. [2021-03-11 20:15:00,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 65 transitions, 631 flow [2021-03-11 20:15:00,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 65 transitions, 623 flow, removed 3 selfloop flow, removed 1 redundant places. [2021-03-11 20:15:00,542 INFO L241 Difference]: Finished difference. Result has 86 places, 62 transitions, 551 flow [2021-03-11 20:15:00,542 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=551, PETRI_PLACES=86, PETRI_TRANSITIONS=62} [2021-03-11 20:15:00,542 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 45 predicate places. [2021-03-11 20:15:00,542 INFO L480 AbstractCegarLoop]: Abstraction has has 86 places, 62 transitions, 551 flow [2021-03-11 20:15:00,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 147.875) internal successors, (1183), 8 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:00,542 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:00,542 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:15:00,542 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-11 20:15:00,542 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:00,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:00,543 INFO L82 PathProgramCache]: Analyzing trace with hash -813846124, now seen corresponding path program 1 times [2021-03-11 20:15:00,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:00,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614624958] [2021-03-11 20:15:00,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:15:00,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:00,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:00,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:00,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:00,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:00,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:00,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:00,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:15:00,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:15:00,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614624958] [2021-03-11 20:15:00,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:15:00,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:15:00,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13305972] [2021-03-11 20:15:00,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:15:00,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:15:00,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:15:00,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:15:00,593 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 203 [2021-03-11 20:15:00,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 62 transitions, 551 flow. Second operand has 5 states, 5 states have (on average 164.8) internal successors, (824), 5 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:00,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:15:00,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 203 [2021-03-11 20:15:00,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:15:00,741 INFO L129 PetriNetUnfolder]: 690/1450 cut-off events. [2021-03-11 20:15:00,741 INFO L130 PetriNetUnfolder]: For 8137/12534 co-relation queries the response was YES. [2021-03-11 20:15:00,749 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6118 conditions, 1450 events. 690/1450 cut-off events. For 8137/12534 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 10840 event pairs, 67 based on Foata normal form. 246/1440 useless extension candidates. Maximal degree in co-relation 6079. Up to 969 conditions per place. [2021-03-11 20:15:00,754 INFO L132 encePairwiseOnDemand]: 196/203 looper letters, 14 selfloop transitions, 10 changer transitions 0/71 dead transitions. [2021-03-11 20:15:00,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 71 transitions, 635 flow [2021-03-11 20:15:00,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:15:00,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:15:00,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 843 transitions. [2021-03-11 20:15:00,756 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8305418719211822 [2021-03-11 20:15:00,756 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 843 transitions. [2021-03-11 20:15:00,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 843 transitions. [2021-03-11 20:15:00,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:15:00,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 843 transitions. [2021-03-11 20:15:00,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 168.6) internal successors, (843), 5 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:00,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:00,759 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:00,759 INFO L185 Difference]: Start difference. First operand has 86 places, 62 transitions, 551 flow. Second operand 5 states and 843 transitions. [2021-03-11 20:15:00,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 71 transitions, 635 flow [2021-03-11 20:15:00,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 71 transitions, 604 flow, removed 12 selfloop flow, removed 2 redundant places. [2021-03-11 20:15:00,769 INFO L241 Difference]: Finished difference. Result has 90 places, 67 transitions, 599 flow [2021-03-11 20:15:00,769 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=599, PETRI_PLACES=90, PETRI_TRANSITIONS=67} [2021-03-11 20:15:00,769 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 49 predicate places. [2021-03-11 20:15:00,769 INFO L480 AbstractCegarLoop]: Abstraction has has 90 places, 67 transitions, 599 flow [2021-03-11 20:15:00,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 164.8) internal successors, (824), 5 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:00,769 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:00,769 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:15:00,769 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-11 20:15:00,769 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:00,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:00,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1765183580, now seen corresponding path program 1 times [2021-03-11 20:15:00,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:00,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359371534] [2021-03-11 20:15:00,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:15:00,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:00,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:15:00,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:00,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:00,801 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:15:00,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:15:00,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:15:00,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359371534] [2021-03-11 20:15:00,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:15:00,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:15:00,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596953450] [2021-03-11 20:15:00,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:15:00,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:15:00,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:15:00,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:15:00,808 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 203 [2021-03-11 20:15:00,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 67 transitions, 599 flow. Second operand has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:00,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:15:00,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 203 [2021-03-11 20:15:00,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:15:01,012 INFO L129 PetriNetUnfolder]: 896/1971 cut-off events. [2021-03-11 20:15:01,012 INFO L130 PetriNetUnfolder]: For 11639/14884 co-relation queries the response was YES. [2021-03-11 20:15:01,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8849 conditions, 1971 events. 896/1971 cut-off events. For 11639/14884 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 16271 event pairs, 152 based on Foata normal form. 98/1708 useless extension candidates. Maximal degree in co-relation 8808. Up to 1407 conditions per place. [2021-03-11 20:15:01,031 INFO L132 encePairwiseOnDemand]: 199/203 looper letters, 6 selfloop transitions, 5 changer transitions 1/71 dead transitions. [2021-03-11 20:15:01,032 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 71 transitions, 681 flow [2021-03-11 20:15:01,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:15:01,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:15:01,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 866 transitions. [2021-03-11 20:15:01,033 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8532019704433498 [2021-03-11 20:15:01,033 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 866 transitions. [2021-03-11 20:15:01,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 866 transitions. [2021-03-11 20:15:01,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:15:01,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 866 transitions. [2021-03-11 20:15:01,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 173.2) internal successors, (866), 5 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:01,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:01,038 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:01,038 INFO L185 Difference]: Start difference. First operand has 90 places, 67 transitions, 599 flow. Second operand 5 states and 866 transitions. [2021-03-11 20:15:01,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 71 transitions, 681 flow [2021-03-11 20:15:01,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 71 transitions, 662 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-11 20:15:01,053 INFO L241 Difference]: Finished difference. Result has 95 places, 69 transitions, 633 flow [2021-03-11 20:15:01,053 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=633, PETRI_PLACES=95, PETRI_TRANSITIONS=69} [2021-03-11 20:15:01,054 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 54 predicate places. [2021-03-11 20:15:01,054 INFO L480 AbstractCegarLoop]: Abstraction has has 95 places, 69 transitions, 633 flow [2021-03-11 20:15:01,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:01,057 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:01,057 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:15:01,057 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-11 20:15:01,057 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:01,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:01,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1323112809, now seen corresponding path program 1 times [2021-03-11 20:15:01,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:01,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724823038] [2021-03-11 20:15:01,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:15:01,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:01,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:01,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:01,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:01,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:01,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:01,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:01,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:01,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:01,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:15:01,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:15:01,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724823038] [2021-03-11 20:15:01,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:15:01,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 20:15:01,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052729274] [2021-03-11 20:15:01,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:15:01,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:15:01,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:15:01,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:15:01,124 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 203 [2021-03-11 20:15:01,125 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 69 transitions, 633 flow. Second operand has 6 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:01,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:15:01,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 203 [2021-03-11 20:15:01,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:15:01,290 INFO L129 PetriNetUnfolder]: 735/1505 cut-off events. [2021-03-11 20:15:01,290 INFO L130 PetriNetUnfolder]: For 7792/14501 co-relation queries the response was YES. [2021-03-11 20:15:01,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6720 conditions, 1505 events. 735/1505 cut-off events. For 7792/14501 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 11156 event pairs, 8 based on Foata normal form. 306/1481 useless extension candidates. Maximal degree in co-relation 6677. Up to 1170 conditions per place. [2021-03-11 20:15:01,302 INFO L132 encePairwiseOnDemand]: 196/203 looper letters, 12 selfloop transitions, 14 changer transitions 4/65 dead transitions. [2021-03-11 20:15:01,302 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 65 transitions, 587 flow [2021-03-11 20:15:01,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 20:15:01,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 20:15:01,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1012 transitions. [2021-03-11 20:15:01,305 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8308702791461412 [2021-03-11 20:15:01,305 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1012 transitions. [2021-03-11 20:15:01,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1012 transitions. [2021-03-11 20:15:01,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:15:01,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1012 transitions. [2021-03-11 20:15:01,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 168.66666666666666) internal successors, (1012), 6 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:01,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:01,312 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:01,312 INFO L185 Difference]: Start difference. First operand has 95 places, 69 transitions, 633 flow. Second operand 6 states and 1012 transitions. [2021-03-11 20:15:01,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 65 transitions, 587 flow [2021-03-11 20:15:01,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 65 transitions, 550 flow, removed 6 selfloop flow, removed 9 redundant places. [2021-03-11 20:15:01,320 INFO L241 Difference]: Finished difference. Result has 92 places, 57 transitions, 477 flow [2021-03-11 20:15:01,320 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=477, PETRI_PLACES=92, PETRI_TRANSITIONS=57} [2021-03-11 20:15:01,321 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 51 predicate places. [2021-03-11 20:15:01,321 INFO L480 AbstractCegarLoop]: Abstraction has has 92 places, 57 transitions, 477 flow [2021-03-11 20:15:01,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:01,321 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:01,321 INFO L255 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] [2021-03-11 20:15:01,321 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-11 20:15:01,321 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:01,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:01,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1642507867, now seen corresponding path program 1 times [2021-03-11 20:15:01,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:01,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512769817] [2021-03-11 20:15:01,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:15:01,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:01,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:15:01,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:01,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:01,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:01,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:01,357 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:15:01,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:15:01,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:15:01,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512769817] [2021-03-11 20:15:01,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:15:01,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:15:01,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476242160] [2021-03-11 20:15:01,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:15:01,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:15:01,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:15:01,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:15:01,363 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 203 [2021-03-11 20:15:01,364 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 57 transitions, 477 flow. Second operand has 5 states, 5 states have (on average 169.0) internal successors, (845), 5 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:01,364 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:15:01,364 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 203 [2021-03-11 20:15:01,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:15:01,575 INFO L129 PetriNetUnfolder]: 1368/2760 cut-off events. [2021-03-11 20:15:01,576 INFO L130 PetriNetUnfolder]: For 17724/22178 co-relation queries the response was YES. [2021-03-11 20:15:01,591 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13162 conditions, 2760 events. 1368/2760 cut-off events. For 17724/22178 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 23706 event pairs, 29 based on Foata normal form. 76/2199 useless extension candidates. Maximal degree in co-relation 13120. Up to 2213 conditions per place. [2021-03-11 20:15:01,596 INFO L132 encePairwiseOnDemand]: 199/203 looper letters, 6 selfloop transitions, 2 changer transitions 1/61 dead transitions. [2021-03-11 20:15:01,596 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 61 transitions, 559 flow [2021-03-11 20:15:01,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:15:01,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:15:01,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 850 transitions. [2021-03-11 20:15:01,598 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8374384236453202 [2021-03-11 20:15:01,598 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 850 transitions. [2021-03-11 20:15:01,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 850 transitions. [2021-03-11 20:15:01,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:15:01,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 850 transitions. [2021-03-11 20:15:01,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:01,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:01,600 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:01,600 INFO L185 Difference]: Start difference. First operand has 92 places, 57 transitions, 477 flow. Second operand 5 states and 850 transitions. [2021-03-11 20:15:01,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 61 transitions, 559 flow [2021-03-11 20:15:01,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 61 transitions, 512 flow, removed 16 selfloop flow, removed 7 redundant places. [2021-03-11 20:15:01,628 INFO L241 Difference]: Finished difference. Result has 88 places, 58 transitions, 453 flow [2021-03-11 20:15:01,629 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=453, PETRI_PLACES=88, PETRI_TRANSITIONS=58} [2021-03-11 20:15:01,629 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 47 predicate places. [2021-03-11 20:15:01,629 INFO L480 AbstractCegarLoop]: Abstraction has has 88 places, 58 transitions, 453 flow [2021-03-11 20:15:01,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 169.0) internal successors, (845), 5 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:01,629 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:01,629 INFO L255 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] [2021-03-11 20:15:01,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-11 20:15:01,629 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:01,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:01,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1836699459, now seen corresponding path program 2 times [2021-03-11 20:15:01,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:01,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914966893] [2021-03-11 20:15:01,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:15:01,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:01,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:01,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:01,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:01,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:01,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:01,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:01,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:01,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:01,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:01,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:01,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:15:01,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:15:01,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914966893] [2021-03-11 20:15:01,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:15:01,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 20:15:01,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495052269] [2021-03-11 20:15:01,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 20:15:01,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:15:01,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 20:15:01,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 20:15:01,681 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 203 [2021-03-11 20:15:01,681 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 58 transitions, 453 flow. Second operand has 7 states, 7 states have (on average 164.85714285714286) internal successors, (1154), 7 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:01,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:15:01,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 203 [2021-03-11 20:15:01,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:15:02,011 INFO L129 PetriNetUnfolder]: 1321/2609 cut-off events. [2021-03-11 20:15:02,011 INFO L130 PetriNetUnfolder]: For 12580/23501 co-relation queries the response was YES. [2021-03-11 20:15:02,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12010 conditions, 2609 events. 1321/2609 cut-off events. For 12580/23501 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 21917 event pairs, 0 based on Foata normal form. 465/2445 useless extension candidates. Maximal degree in co-relation 11974. Up to 1369 conditions per place. [2021-03-11 20:15:02,038 INFO L132 encePairwiseOnDemand]: 196/203 looper letters, 5 selfloop transitions, 18 changer transitions 13/59 dead transitions. [2021-03-11 20:15:02,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 59 transitions, 507 flow [2021-03-11 20:15:02,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:15:02,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:15:02,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1173 transitions. [2021-03-11 20:15:02,040 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8254750175932442 [2021-03-11 20:15:02,040 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1173 transitions. [2021-03-11 20:15:02,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1173 transitions. [2021-03-11 20:15:02,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:15:02,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1173 transitions. [2021-03-11 20:15:02,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 167.57142857142858) internal successors, (1173), 7 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:02,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:02,043 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:02,043 INFO L185 Difference]: Start difference. First operand has 88 places, 58 transitions, 453 flow. Second operand 7 states and 1173 transitions. [2021-03-11 20:15:02,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 59 transitions, 507 flow [2021-03-11 20:15:02,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 59 transitions, 462 flow, removed 18 selfloop flow, removed 7 redundant places. [2021-03-11 20:15:02,058 INFO L241 Difference]: Finished difference. Result has 88 places, 46 transitions, 377 flow [2021-03-11 20:15:02,059 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=377, PETRI_PLACES=88, PETRI_TRANSITIONS=46} [2021-03-11 20:15:02,059 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 47 predicate places. [2021-03-11 20:15:02,059 INFO L480 AbstractCegarLoop]: Abstraction has has 88 places, 46 transitions, 377 flow [2021-03-11 20:15:02,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 164.85714285714286) internal successors, (1154), 7 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:15:02,059 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:02,059 INFO L255 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] [2021-03-11 20:15:02,059 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-11 20:15:02,059 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:02,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:02,060 INFO L82 PathProgramCache]: Analyzing trace with hash -543675236, now seen corresponding path program 1 times [2021-03-11 20:15:02,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:02,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284986242] [2021-03-11 20:15:02,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 20:15:02,096 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 20:15:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 20:15:02,125 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 20:15:02,160 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-11 20:15:02,160 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-03-11 20:15:02,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-11 20:15:02,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:15:02 BasicIcfg [2021-03-11 20:15:02,241 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 20:15:02,242 INFO L168 Benchmark]: Toolchain (without parser) took 14779.20 ms. Allocated memory was 255.9 MB in the beginning and 773.8 MB in the end (delta: 518.0 MB). Free memory was 235.5 MB in the beginning and 617.1 MB in the end (delta: -381.7 MB). Peak memory consumption was 135.7 MB. Max. memory is 16.0 GB. [2021-03-11 20:15:02,242 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:15:02,242 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.52 ms. Allocated memory was 255.9 MB in the beginning and 343.9 MB in the end (delta: 88.1 MB). Free memory was 235.0 MB in the beginning and 305.1 MB in the end (delta: -70.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. [2021-03-11 20:15:02,242 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.63 ms. Allocated memory is still 343.9 MB. Free memory was 305.1 MB in the beginning and 302.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:15:02,243 INFO L168 Benchmark]: Boogie Preprocessor took 20.37 ms. Allocated memory is still 343.9 MB. Free memory was 302.0 MB in the beginning and 300.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:15:02,243 INFO L168 Benchmark]: RCFGBuilder took 1285.54 ms. Allocated memory is still 343.9 MB. Free memory was 300.0 MB in the beginning and 246.8 MB in the end (delta: 53.2 MB). Peak memory consumption was 55.7 MB. Max. memory is 16.0 GB. [2021-03-11 20:15:02,243 INFO L168 Benchmark]: TraceAbstraction took 13071.95 ms. Allocated memory was 343.9 MB in the beginning and 773.8 MB in the end (delta: 429.9 MB). Free memory was 246.8 MB in the beginning and 617.1 MB in the end (delta: -370.3 MB). Peak memory consumption was 59.6 MB. Max. memory is 16.0 GB. [2021-03-11 20:15:02,247 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 359.52 ms. Allocated memory was 255.9 MB in the beginning and 343.9 MB in the end (delta: 88.1 MB). Free memory was 235.0 MB in the beginning and 305.1 MB in the end (delta: -70.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 35.63 ms. Allocated memory is still 343.9 MB. Free memory was 305.1 MB in the beginning and 302.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 20.37 ms. Allocated memory is still 343.9 MB. Free memory was 302.0 MB in the beginning and 300.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 1285.54 ms. Allocated memory is still 343.9 MB. Free memory was 300.0 MB in the beginning and 246.8 MB in the end (delta: 53.2 MB). Peak memory consumption was 55.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 13071.95 ms. Allocated memory was 343.9 MB in the beginning and 773.8 MB in the end (delta: 429.9 MB). Free memory was 246.8 MB in the beginning and 617.1 MB in the end (delta: -370.3 MB). Peak memory consumption was 59.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7163.9ms, 119 PlacesBefore, 41 PlacesAfterwards, 108 TransitionsBefore, 29 TransitionsAfterwards, 2406 CoEnabledTransitionPairs, 7 FixpointIterations, 38 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 91 TotalNumberOfCompositions, 6239 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2995, positive: 2814, positive conditional: 0, positive unconditional: 2814, negative: 181, negative conditional: 0, negative unconditional: 181, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1620, positive: 1574, positive conditional: 0, positive unconditional: 1574, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1620, positive: 1553, positive conditional: 0, positive unconditional: 1553, negative: 67, negative conditional: 0, negative unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 67, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 761, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 725, negative conditional: 0, negative unconditional: 725, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2995, positive: 1240, positive conditional: 0, positive unconditional: 1240, negative: 135, negative conditional: 0, negative unconditional: 135, unknown: 1620, unknown conditional: 0, unknown unconditional: 1620] , Statistics on independence cache: Total cache size (in pairs): 184, Positive cache size: 163, Positive conditional cache size: 0, Positive unconditional cache size: 163, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p3_EAX = 0; [L714] 0 int a = 0; [L715] 0 _Bool main$tmp_guard0; [L716] 0 _Bool main$tmp_guard1; [L718] 0 int x = 0; [L720] 0 int y = 0; [L722] 0 int z = 0; [L723] 0 _Bool z$flush_delayed; [L724] 0 int z$mem_tmp; [L725] 0 _Bool z$r_buff0_thd0; [L726] 0 _Bool z$r_buff0_thd1; [L727] 0 _Bool z$r_buff0_thd2; [L728] 0 _Bool z$r_buff0_thd3; [L729] 0 _Bool z$r_buff0_thd4; [L730] 0 _Bool z$r_buff1_thd0; [L731] 0 _Bool z$r_buff1_thd1; [L732] 0 _Bool z$r_buff1_thd2; [L733] 0 _Bool z$r_buff1_thd3; [L734] 0 _Bool z$r_buff1_thd4; [L735] 0 _Bool z$read_delayed; [L736] 0 int *z$read_delayed_var; [L737] 0 int z$w_buff0; [L738] 0 _Bool z$w_buff0_used; [L739] 0 int z$w_buff1; [L740] 0 _Bool z$w_buff1_used; [L741] 0 _Bool weak$$choice0; [L742] 0 _Bool weak$$choice2; [L834] 0 pthread_t t1517; [L835] FCALL, FORK 0 pthread_create(&t1517, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L836] 0 pthread_t t1518; [L837] FCALL, FORK 0 pthread_create(&t1518, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=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, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L838] 0 pthread_t t1519; [L839] FCALL, FORK 0 pthread_create(&t1519, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=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, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L840] 0 pthread_t t1520; [L841] FCALL, FORK 0 pthread_create(&t1520, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=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, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L796] 4 z$w_buff1 = z$w_buff0 [L797] 4 z$w_buff0 = 2 [L798] 4 z$w_buff1_used = z$w_buff0_used [L799] 4 z$w_buff0_used = (_Bool)1 [L18] COND FALSE 4 !(!expression) [L801] 4 z$r_buff1_thd0 = z$r_buff0_thd0 [L802] 4 z$r_buff1_thd1 = z$r_buff0_thd1 [L803] 4 z$r_buff1_thd2 = z$r_buff0_thd2 [L804] 4 z$r_buff1_thd3 = z$r_buff0_thd3 [L805] 4 z$r_buff1_thd4 = z$r_buff0_thd4 [L806] 4 z$r_buff0_thd4 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L809] 4 __unbuffered_p3_EAX = a VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=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, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L746] 1 a = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, 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=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L749] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, 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=1, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L761] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, 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, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L764] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, 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, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L776] 3 y = 2 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, 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, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L779] 3 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, 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, z=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L812] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L812] 4 z = z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L813] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L813] 4 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L814] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$w_buff1_used [L814] 4 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$w_buff1_used [L815] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L815] 4 z$r_buff0_thd4 = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L816] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$r_buff1_thd4 [L816] 4 z$r_buff1_thd4 = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$r_buff1_thd4 [L754] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L756] 1 return 0; [L769] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L771] 2 return 0; [L782] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L782] EXPR 3 z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z [L782] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L782] 3 z = z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L783] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L783] 3 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L784] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L784] 3 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L785] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L785] 3 z$r_buff0_thd3 = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L786] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 [L786] 3 z$r_buff1_thd3 = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 [L789] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L791] 3 return 0; [L819] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L821] 4 return 0; [L843] 0 main$tmp_guard0 = __unbuffered_cnt == 4 VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, 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, z=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L3] COND FALSE 0 !(!cond) [L847] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L847] EXPR 0 z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z [L847] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L847] 0 z = z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L848] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L848] 0 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L849] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L849] 0 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L850] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L850] 0 z$r_buff0_thd0 = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L851] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 [L851] 0 z$r_buff1_thd0 = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 [L854] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L855] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L856] 0 z$flush_delayed = weak$$choice2 [L857] 0 z$mem_tmp = z [L858] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L858] 0 z = !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L859] EXPR 0 weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L859] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0) [L859] EXPR 0 weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L859] 0 z$w_buff0 = weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L860] EXPR 0 weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L860] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1) [L860] EXPR 0 weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L860] 0 z$w_buff1 = weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L861] EXPR 0 weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L861] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used) [L861] EXPR 0 weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L861] 0 z$w_buff0_used = weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L862] EXPR 0 weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L862] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0) [L862] EXPR 0 weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L862] 0 z$w_buff1_used = weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L863] EXPR 0 weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L863] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0) [L863] EXPR 0 weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L863] 0 z$r_buff0_thd0 = weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L864] EXPR 0 weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L864] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0) [L864] EXPR 0 weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L864] 0 z$r_buff1_thd0 = weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L865] 0 main$tmp_guard1 = !(x == 2 && y == 2 && z == 2 && __unbuffered_p3_EAX == 0) [L866] EXPR 0 z$flush_delayed ? z$mem_tmp : z [L866] 0 z = z$flush_delayed ? z$mem_tmp : z [L867] 0 z$flush_delayed = (_Bool)0 [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=50, weak$$choice2=0, x=2, y=2, z=2, z$flush_delayed=0, z$mem_tmp=2, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 111 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 12873.1ms, OverallIterations: 21, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 3320.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7242.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 105 SDtfs, 66 SDslu, 122 SDs, 0 SdLazy, 639 SolverSat, 179 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 649.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 987.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=633occurred in iteration=17, InterpolantAutomatonStates: 118, 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: 49.8ms SsaConstructionTime, 473.5ms SatisfiabilityAnalysisTime, 1487.9ms InterpolantComputationTime, 356 NumberOfCodeBlocks, 356 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 310 ConstructedInterpolants, 0 QuantifiedInterpolants, 2940 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 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...