/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 00:51:47,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 00:51:47,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 00:51:47,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 00:51:47,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 00:51:47,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 00:51:47,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 00:51:47,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 00:51:47,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 00:51:47,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 00:51:47,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 00:51:47,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 00:51:47,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 00:51:47,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 00:51:47,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 00:51:47,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 00:51:47,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 00:51:47,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 00:51:47,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 00:51:47,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 00:51:47,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 00:51:47,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 00:51:47,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 00:51:47,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 00:51:47,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-26 00:51:47,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-26 00:51:47,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-26 00:51:47,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-26 00:51:47,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-26 00:51:47,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-26 00:51:47,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 00:51:47,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 00:51:47,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 00:51:47,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 00:51:47,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 00:51:47,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 00:51:47,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 00:51:47,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 00:51:47,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 00:51:47,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 00:51:47,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 00:51:47,859 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2021-03-26 00:51:47,906 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 00:51:47,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 00:51:47,911 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 00:51:47,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 00:51:47,911 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 00:51:47,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 00:51:47,912 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 00:51:47,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 00:51:47,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 00:51:47,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 00:51:47,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 00:51:47,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 00:51:47,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 00:51:47,914 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 00:51:47,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 00:51:47,914 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 00:51:47,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 00:51:47,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 00:51:47,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 00:51:47,915 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 00:51:47,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 00:51:47,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 00:51:47,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 00:51:47,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 00:51:47,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 00:51:47,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 00:51:47,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 00:51:47,917 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 00:51:47,917 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 00:51:47,917 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 00:51:47,917 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 00:51:48,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 00:51:48,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 00:51:48,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 00:51:48,285 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 00:51:48,286 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 00:51:48,287 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_rmo.opt.i [2021-03-26 00:51:48,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e68ad31c2/ca9eb22340a340a8a66e67d49e33cfb6/FLAGb0f3b3ca7 [2021-03-26 00:51:48,990 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 00:51:48,991 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_rmo.opt.i [2021-03-26 00:51:49,006 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e68ad31c2/ca9eb22340a340a8a66e67d49e33cfb6/FLAGb0f3b3ca7 [2021-03-26 00:51:49,283 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e68ad31c2/ca9eb22340a340a8a66e67d49e33cfb6 [2021-03-26 00:51:49,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 00:51:49,287 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 00:51:49,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 00:51:49,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 00:51:49,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 00:51:49,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 12:51:49" (1/1) ... [2021-03-26 00:51:49,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1908953f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:51:49, skipping insertion in model container [2021-03-26 00:51:49,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 12:51:49" (1/1) ... [2021-03-26 00:51:49,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 00:51:49,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 00:51:49,489 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/safe035_rmo.opt.i[949,962] [2021-03-26 00:51:49,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 00:51:49,732 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 00:51:49,745 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/safe035_rmo.opt.i[949,962] [2021-03-26 00:51:49,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 00:51:49,872 INFO L208 MainTranslator]: Completed translation [2021-03-26 00:51:49,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:51:49 WrapperNode [2021-03-26 00:51:49,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 00:51:49,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 00:51:49,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 00:51:49,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 00:51:49,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:51:49" (1/1) ... [2021-03-26 00:51:49,917 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:51:49" (1/1) ... [2021-03-26 00:51:49,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 00:51:49,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 00:51:49,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 00:51:49,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 00:51:49,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:51:49" (1/1) ... [2021-03-26 00:51:49,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:51:49" (1/1) ... [2021-03-26 00:51:49,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:51:49" (1/1) ... [2021-03-26 00:51:49,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:51:49" (1/1) ... [2021-03-26 00:51:49,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:51:49" (1/1) ... [2021-03-26 00:51:49,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:51:49" (1/1) ... [2021-03-26 00:51:49,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:51:49" (1/1) ... [2021-03-26 00:51:49,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 00:51:49,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 00:51:49,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 00:51:49,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 00:51:49,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:51:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 00:51:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 00:51:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-26 00:51:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 00:51:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 00:51:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-26 00:51:50,086 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-26 00:51:50,087 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-26 00:51:50,087 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-26 00:51:50,087 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-26 00:51:50,087 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-26 00:51:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 00:51:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-26 00:51:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 00:51:50,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 00:51:50,090 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 00:51:50,542 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 00:51:50,543 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-26 00:51:50,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 12:51:50 BoogieIcfgContainer [2021-03-26 00:51:50,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 00:51:50,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 00:51:50,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 00:51:50,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 00:51:50,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 12:51:49" (1/3) ... [2021-03-26 00:51:50,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@baf2b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 12:51:50, skipping insertion in model container [2021-03-26 00:51:50,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:51:49" (2/3) ... [2021-03-26 00:51:50,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@baf2b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 12:51:50, skipping insertion in model container [2021-03-26 00:51:50,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 12:51:50" (3/3) ... [2021-03-26 00:51:50,558 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_rmo.opt.i [2021-03-26 00:51:50,564 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 00:51:50,570 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 00:51:50,572 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 00:51:50,613 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,614 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,614 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,614 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,614 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,614 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,615 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,615 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,615 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,615 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,615 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,615 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,618 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,618 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,619 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,619 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,619 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,619 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,619 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,619 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,620 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,620 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,620 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,621 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,623 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,624 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,624 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,624 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,625 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,625 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,625 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,625 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,629 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,630 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,630 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,630 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,633 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,634 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,635 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,635 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,645 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,645 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,646 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,646 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,654 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,655 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,655 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,655 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:50,658 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 00:51:50,679 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-26 00:51:50,699 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 00:51:50,699 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 00:51:50,699 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 00:51:50,699 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 00:51:50,699 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 00:51:50,699 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 00:51:50,700 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 00:51:50,700 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 00:51:50,711 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-26 00:51:50,743 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-26 00:51:50,744 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:51:50,748 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-26 00:51:50,748 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-26 00:51:50,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-26 00:51:50,754 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:51:50,768 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-26 00:51:50,772 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-26 00:51:50,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-26 00:51:50,797 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-26 00:51:50,798 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:51:50,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-26 00:51:50,801 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-26 00:51:52,453 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-03-26 00:51:52,645 INFO L154 LiptonReduction]: Checked pairs total: 1134 [2021-03-26 00:51:52,645 INFO L156 LiptonReduction]: Total number of compositions: 38 [2021-03-26 00:51:52,647 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1894 [2021-03-26 00:51:52,657 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-26 00:51:52,657 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:51:52,657 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:51:52,658 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:51:52,658 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:51:52,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:51:52,663 INFO L82 PathProgramCache]: Analyzing trace with hash -2024649040, now seen corresponding path program 1 times [2021-03-26 00:51:52,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:51:52,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565522533] [2021-03-26 00:51:52,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:51:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:51:52,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:51:52,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:51:52,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:51:52,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565522533] [2021-03-26 00:51:52,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:51:52,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 00:51:52,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219939744] [2021-03-26 00:51:52,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 00:51:52,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:51:52,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 00:51:52,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 00:51:52,873 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 113 [2021-03-26 00:51:52,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:52,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:51:52,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 113 [2021-03-26 00:51:52,877 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:51:52,889 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-03-26 00:51:52,889 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:51:52,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 22 events. 0/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-26 00:51:52,890 INFO L132 encePairwiseOnDemand]: 110/113 looper letters, 1 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2021-03-26 00:51:52,890 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 22 transitions, 59 flow [2021-03-26 00:51:52,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 00:51:52,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 00:51:52,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2021-03-26 00:51:52,901 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.887905604719764 [2021-03-26 00:51:52,901 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2021-03-26 00:51:52,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2021-03-26 00:51:52,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:51:52,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2021-03-26 00:51:52,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:52,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:52,912 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:52,913 INFO L185 Difference]: Start difference. First operand has 32 places, 22 transitions, 53 flow. Second operand 3 states and 301 transitions. [2021-03-26 00:51:52,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 22 transitions, 59 flow [2021-03-26 00:51:52,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 22 transitions, 56 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-26 00:51:52,917 INFO L241 Difference]: Finished difference. Result has 32 places, 22 transitions, 58 flow [2021-03-26 00:51:52,918 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2021-03-26 00:51:52,919 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2021-03-26 00:51:52,919 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:51:52,919 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 22 transitions, 58 flow [2021-03-26 00:51:52,919 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 22 transitions, 58 flow [2021-03-26 00:51:52,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 22 transitions, 58 flow [2021-03-26 00:51:52,924 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-03-26 00:51:52,924 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:51:52,924 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 22 events. 0/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-26 00:51:52,924 INFO L142 LiptonReduction]: Number of co-enabled transitions 158 [2021-03-26 00:51:53,543 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-26 00:51:53,778 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-26 00:51:53,847 INFO L154 LiptonReduction]: Checked pairs total: 435 [2021-03-26 00:51:53,847 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-26 00:51:53,847 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 928 [2021-03-26 00:51:53,849 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2021-03-26 00:51:53,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:53,849 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:51:53,849 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:51:53,849 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 00:51:53,850 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:51:53,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:51:53,850 INFO L82 PathProgramCache]: Analyzing trace with hash 186065298, now seen corresponding path program 1 times [2021-03-26 00:51:53,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:51:53,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831748521] [2021-03-26 00:51:53,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:51:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:51:53,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:51:53,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:51:53,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:51:53,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:51:53,951 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-26 00:51:53,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 00:51:53,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:51:53,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831748521] [2021-03-26 00:51:53,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:51:53,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:51:53,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100749197] [2021-03-26 00:51:53,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:51:53,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:51:53,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:51:53,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:51:53,974 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 118 [2021-03-26 00:51:53,974 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:53,974 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:51:53,974 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 118 [2021-03-26 00:51:53,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:51:54,029 INFO L129 PetriNetUnfolder]: 25/95 cut-off events. [2021-03-26 00:51:54,030 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-03-26 00:51:54,030 INFO L84 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 95 events. 25/95 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 392 event pairs, 2 based on Foata normal form. 10/103 useless extension candidates. Maximal degree in co-relation 189. Up to 24 conditions per place. [2021-03-26 00:51:54,031 INFO L132 encePairwiseOnDemand]: 111/118 looper letters, 6 selfloop transitions, 6 changer transitions 3/25 dead transitions. [2021-03-26 00:51:54,031 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 25 transitions, 100 flow [2021-03-26 00:51:54,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:51:54,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:51:54,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 373 transitions. [2021-03-26 00:51:54,033 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7902542372881356 [2021-03-26 00:51:54,034 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 373 transitions. [2021-03-26 00:51:54,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 373 transitions. [2021-03-26 00:51:54,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:51:54,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 373 transitions. [2021-03-26 00:51:54,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:54,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:54,038 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:54,038 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states and 373 transitions. [2021-03-26 00:51:54,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 25 transitions, 100 flow [2021-03-26 00:51:54,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 25 transitions, 92 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 00:51:54,039 INFO L241 Difference]: Finished difference. Result has 31 places, 20 transitions, 85 flow [2021-03-26 00:51:54,039 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=85, PETRI_PLACES=31, PETRI_TRANSITIONS=20} [2021-03-26 00:51:54,040 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2021-03-26 00:51:54,040 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:51:54,040 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 20 transitions, 85 flow [2021-03-26 00:51:54,040 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 20 transitions, 85 flow [2021-03-26 00:51:54,041 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 20 transitions, 85 flow [2021-03-26 00:51:54,046 INFO L129 PetriNetUnfolder]: 13/60 cut-off events. [2021-03-26 00:51:54,047 INFO L130 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2021-03-26 00:51:54,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 60 events. 13/60 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 200 event pairs, 3 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 134. Up to 19 conditions per place. [2021-03-26 00:51:54,048 INFO L142 LiptonReduction]: Number of co-enabled transitions 98 [2021-03-26 00:51:54,050 INFO L154 LiptonReduction]: Checked pairs total: 38 [2021-03-26 00:51:54,050 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:51:54,050 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-03-26 00:51:54,051 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 20 transitions, 85 flow [2021-03-26 00:51:54,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:54,051 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:51:54,051 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:51:54,052 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 00:51:54,052 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:51:54,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:51:54,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1158423694, now seen corresponding path program 1 times [2021-03-26 00:51:54,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:51:54,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343277616] [2021-03-26 00:51:54,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:51:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:51:54,109 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-26 00:51:54,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-26 00:51:54,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:51:54,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:51:54,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:51:54,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343277616] [2021-03-26 00:51:54,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:51:54,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:51:54,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089208297] [2021-03-26 00:51:54,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:51:54,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:51:54,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:51:54,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:51:54,121 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 118 [2021-03-26 00:51:54,122 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 20 transitions, 85 flow. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:54,122 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:51:54,122 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 118 [2021-03-26 00:51:54,122 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:51:54,200 INFO L129 PetriNetUnfolder]: 83/205 cut-off events. [2021-03-26 00:51:54,200 INFO L130 PetriNetUnfolder]: For 217/253 co-relation queries the response was YES. [2021-03-26 00:51:54,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 205 events. 83/205 cut-off events. For 217/253 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1123 event pairs, 32 based on Foata normal form. 23/214 useless extension candidates. Maximal degree in co-relation 475. Up to 123 conditions per place. [2021-03-26 00:51:54,204 INFO L132 encePairwiseOnDemand]: 112/118 looper letters, 7 selfloop transitions, 7 changer transitions 2/30 dead transitions. [2021-03-26 00:51:54,204 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 30 transitions, 137 flow [2021-03-26 00:51:54,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 00:51:54,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 00:51:54,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 458 transitions. [2021-03-26 00:51:54,207 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7762711864406779 [2021-03-26 00:51:54,207 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 458 transitions. [2021-03-26 00:51:54,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 458 transitions. [2021-03-26 00:51:54,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:51:54,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 458 transitions. [2021-03-26 00:51:54,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.6) internal successors, (458), 5 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:54,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:54,212 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:54,212 INFO L185 Difference]: Start difference. First operand has 31 places, 20 transitions, 85 flow. Second operand 5 states and 458 transitions. [2021-03-26 00:51:54,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 30 transitions, 137 flow [2021-03-26 00:51:54,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 00:51:54,214 INFO L241 Difference]: Finished difference. Result has 37 places, 26 transitions, 137 flow [2021-03-26 00:51:54,215 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=137, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2021-03-26 00:51:54,215 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 5 predicate places. [2021-03-26 00:51:54,215 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:51:54,215 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 26 transitions, 137 flow [2021-03-26 00:51:54,216 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 26 transitions, 137 flow [2021-03-26 00:51:54,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 26 transitions, 137 flow [2021-03-26 00:51:54,231 INFO L129 PetriNetUnfolder]: 77/196 cut-off events. [2021-03-26 00:51:54,231 INFO L130 PetriNetUnfolder]: For 272/306 co-relation queries the response was YES. [2021-03-26 00:51:54,232 INFO L84 FinitePrefix]: Finished finitePrefix Result has 600 conditions, 196 events. 77/196 cut-off events. For 272/306 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 995 event pairs, 29 based on Foata normal form. 10/196 useless extension candidates. Maximal degree in co-relation 585. Up to 130 conditions per place. [2021-03-26 00:51:54,236 INFO L142 LiptonReduction]: Number of co-enabled transitions 154 [2021-03-26 00:51:54,242 INFO L154 LiptonReduction]: Checked pairs total: 9 [2021-03-26 00:51:54,242 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 00:51:54,242 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 27 [2021-03-26 00:51:54,247 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 25 transitions, 131 flow [2021-03-26 00:51:54,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:54,248 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:51:54,248 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:51:54,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 00:51:54,248 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:51:54,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:51:54,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1551753205, now seen corresponding path program 1 times [2021-03-26 00:51:54,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:51:54,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395788273] [2021-03-26 00:51:54,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:51:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:51:54,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:51:54,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:51:54,322 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-26 00:51:54,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-26 00:51:54,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:51:54,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:51:54,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:51:54,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395788273] [2021-03-26 00:51:54,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:51:54,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:51:54,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935585997] [2021-03-26 00:51:54,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 00:51:54,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:51:54,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 00:51:54,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 00:51:54,335 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 118 [2021-03-26 00:51:54,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 25 transitions, 131 flow. Second operand has 5 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:54,336 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:51:54,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 118 [2021-03-26 00:51:54,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:51:54,402 INFO L129 PetriNetUnfolder]: 48/143 cut-off events. [2021-03-26 00:51:54,402 INFO L130 PetriNetUnfolder]: For 372/454 co-relation queries the response was YES. [2021-03-26 00:51:54,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 143 events. 48/143 cut-off events. For 372/454 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 686 event pairs, 7 based on Foata normal form. 35/172 useless extension candidates. Maximal degree in co-relation 511. Up to 101 conditions per place. [2021-03-26 00:51:54,404 INFO L132 encePairwiseOnDemand]: 112/118 looper letters, 5 selfloop transitions, 10 changer transitions 4/33 dead transitions. [2021-03-26 00:51:54,404 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 33 transitions, 215 flow [2021-03-26 00:51:54,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 00:51:54,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 00:51:54,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 549 transitions. [2021-03-26 00:51:54,406 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7754237288135594 [2021-03-26 00:51:54,406 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 549 transitions. [2021-03-26 00:51:54,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 549 transitions. [2021-03-26 00:51:54,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:51:54,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 549 transitions. [2021-03-26 00:51:54,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.5) internal successors, (549), 6 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:54,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:54,411 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:54,411 INFO L185 Difference]: Start difference. First operand has 37 places, 25 transitions, 131 flow. Second operand 6 states and 549 transitions. [2021-03-26 00:51:54,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 33 transitions, 215 flow [2021-03-26 00:51:54,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 33 transitions, 209 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-26 00:51:54,416 INFO L241 Difference]: Finished difference. Result has 41 places, 29 transitions, 193 flow [2021-03-26 00:51:54,416 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2021-03-26 00:51:54,416 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2021-03-26 00:51:54,416 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:51:54,416 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 29 transitions, 193 flow [2021-03-26 00:51:54,417 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 29 transitions, 193 flow [2021-03-26 00:51:54,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 29 transitions, 193 flow [2021-03-26 00:51:54,434 INFO L129 PetriNetUnfolder]: 37/132 cut-off events. [2021-03-26 00:51:54,434 INFO L130 PetriNetUnfolder]: For 353/405 co-relation queries the response was YES. [2021-03-26 00:51:54,435 INFO L84 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 132 events. 37/132 cut-off events. For 353/405 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 642 event pairs, 6 based on Foata normal form. 4/132 useless extension candidates. Maximal degree in co-relation 507. Up to 90 conditions per place. [2021-03-26 00:51:54,436 INFO L142 LiptonReduction]: Number of co-enabled transitions 150 [2021-03-26 00:51:54,444 INFO L154 LiptonReduction]: Checked pairs total: 9 [2021-03-26 00:51:54,444 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 00:51:54,445 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 29 [2021-03-26 00:51:54,447 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 28 transitions, 185 flow [2021-03-26 00:51:54,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:54,448 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:51:54,448 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:51:54,448 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 00:51:54,448 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:51:54,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:51:54,450 INFO L82 PathProgramCache]: Analyzing trace with hash 858774811, now seen corresponding path program 1 times [2021-03-26 00:51:54,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:51:54,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154537542] [2021-03-26 00:51:54,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:51:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:51:54,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:51:54,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:51:54,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:51:54,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:51:54,521 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-26 00:51:54,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-26 00:51:54,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:51:54,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:51:54,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:51:54,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154537542] [2021-03-26 00:51:54,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:51:54,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 00:51:54,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346362546] [2021-03-26 00:51:54,538 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 00:51:54,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:51:54,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 00:51:54,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 00:51:54,544 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 118 [2021-03-26 00:51:54,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 28 transitions, 185 flow. Second operand has 6 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:54,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:51:54,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 118 [2021-03-26 00:51:54,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:51:54,613 INFO L129 PetriNetUnfolder]: 28/93 cut-off events. [2021-03-26 00:51:54,614 INFO L130 PetriNetUnfolder]: For 322/381 co-relation queries the response was YES. [2021-03-26 00:51:54,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 93 events. 28/93 cut-off events. For 322/381 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 369 event pairs, 3 based on Foata normal form. 27/116 useless extension candidates. Maximal degree in co-relation 381. Up to 58 conditions per place. [2021-03-26 00:51:54,615 INFO L132 encePairwiseOnDemand]: 112/118 looper letters, 2 selfloop transitions, 11 changer transitions 3/30 dead transitions. [2021-03-26 00:51:54,615 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 30 transitions, 229 flow [2021-03-26 00:51:54,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 00:51:54,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 00:51:54,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 634 transitions. [2021-03-26 00:51:54,617 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7675544794188862 [2021-03-26 00:51:54,617 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 634 transitions. [2021-03-26 00:51:54,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 634 transitions. [2021-03-26 00:51:54,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:51:54,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 634 transitions. [2021-03-26 00:51:54,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.57142857142857) internal successors, (634), 7 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:54,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 118.0) internal successors, (944), 8 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:54,621 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 118.0) internal successors, (944), 8 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:54,621 INFO L185 Difference]: Start difference. First operand has 41 places, 28 transitions, 185 flow. Second operand 7 states and 634 transitions. [2021-03-26 00:51:54,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 30 transitions, 229 flow [2021-03-26 00:51:54,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 30 transitions, 205 flow, removed 10 selfloop flow, removed 3 redundant places. [2021-03-26 00:51:54,625 INFO L241 Difference]: Finished difference. Result has 45 places, 27 transitions, 185 flow [2021-03-26 00:51:54,626 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=185, PETRI_PLACES=45, PETRI_TRANSITIONS=27} [2021-03-26 00:51:54,626 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 13 predicate places. [2021-03-26 00:51:54,626 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:51:54,626 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 27 transitions, 185 flow [2021-03-26 00:51:54,626 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 27 transitions, 185 flow [2021-03-26 00:51:54,627 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 27 transitions, 185 flow [2021-03-26 00:51:54,633 INFO L129 PetriNetUnfolder]: 24/87 cut-off events. [2021-03-26 00:51:54,633 INFO L130 PetriNetUnfolder]: For 147/151 co-relation queries the response was YES. [2021-03-26 00:51:54,634 INFO L84 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 87 events. 24/87 cut-off events. For 147/151 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 327 event pairs, 3 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 322. Up to 35 conditions per place. [2021-03-26 00:51:54,635 INFO L142 LiptonReduction]: Number of co-enabled transitions 108 [2021-03-26 00:51:54,736 INFO L154 LiptonReduction]: Checked pairs total: 14 [2021-03-26 00:51:54,736 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 00:51:54,736 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 110 [2021-03-26 00:51:54,740 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 25 transitions, 176 flow [2021-03-26 00:51:54,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:54,740 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:51:54,740 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:51:54,741 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 00:51:54,741 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:51:54,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:51:54,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1022787610, now seen corresponding path program 1 times [2021-03-26 00:51:54,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:51:54,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146280422] [2021-03-26 00:51:54,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:51:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:51:54,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:51:54,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:51:54,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:51:54,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:51:54,807 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-26 00:51:54,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 00:51:54,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:51:54,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146280422] [2021-03-26 00:51:54,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:51:54,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:51:54,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846046944] [2021-03-26 00:51:54,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:51:54,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:51:54,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:51:54,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:51:54,817 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 120 [2021-03-26 00:51:54,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 25 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:54,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:51:54,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 120 [2021-03-26 00:51:54,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:51:54,857 INFO L129 PetriNetUnfolder]: 36/101 cut-off events. [2021-03-26 00:51:54,858 INFO L130 PetriNetUnfolder]: For 238/250 co-relation queries the response was YES. [2021-03-26 00:51:54,858 INFO L84 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 101 events. 36/101 cut-off events. For 238/250 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 435 event pairs, 0 based on Foata normal form. 6/105 useless extension candidates. Maximal degree in co-relation 398. Up to 34 conditions per place. [2021-03-26 00:51:54,859 INFO L132 encePairwiseOnDemand]: 112/120 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2021-03-26 00:51:54,859 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 33 transitions, 245 flow [2021-03-26 00:51:54,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 00:51:54,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 00:51:54,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 448 transitions. [2021-03-26 00:51:54,860 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7466666666666667 [2021-03-26 00:51:54,860 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 448 transitions. [2021-03-26 00:51:54,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 448 transitions. [2021-03-26 00:51:54,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:51:54,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 448 transitions. [2021-03-26 00:51:54,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:54,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:54,863 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:54,864 INFO L185 Difference]: Start difference. First operand has 42 places, 25 transitions, 176 flow. Second operand 5 states and 448 transitions. [2021-03-26 00:51:54,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 33 transitions, 245 flow [2021-03-26 00:51:54,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 33 transitions, 167 flow, removed 11 selfloop flow, removed 11 redundant places. [2021-03-26 00:51:54,871 INFO L241 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2021-03-26 00:51:54,871 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2021-03-26 00:51:54,871 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2021-03-26 00:51:54,871 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:51:54,871 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 0 transitions, 0 flow [2021-03-26 00:51:54,872 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 0 transitions, 0 flow [2021-03-26 00:51:54,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 00:51:54,872 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 00:51:54,872 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:51:54,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-26 00:51:54,872 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 00:51:54,873 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 00:51:54,873 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:51:54,873 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-26 00:51:54,874 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 00:51:54,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:51:54,875 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 00:51:54,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 12:51:54 BasicIcfg [2021-03-26 00:51:54,878 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 00:51:54,881 INFO L168 Benchmark]: Toolchain (without parser) took 5592.35 ms. Allocated memory was 255.9 MB in the beginning and 398.5 MB in the end (delta: 142.6 MB). Free memory was 232.8 MB in the beginning and 290.8 MB in the end (delta: -57.9 MB). Peak memory consumption was 83.2 MB. Max. memory is 16.0 GB. [2021-03-26 00:51:54,884 INFO L168 Benchmark]: CDTParser took 0.81 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 00:51:54,884 INFO L168 Benchmark]: CACSL2BoogieTranslator took 580.96 ms. Allocated memory was 255.9 MB in the beginning and 331.4 MB in the end (delta: 75.5 MB). Free memory was 232.8 MB in the beginning and 294.9 MB in the end (delta: -62.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-26 00:51:54,885 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.17 ms. Allocated memory is still 331.4 MB. Free memory was 294.9 MB in the beginning and 293.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 00:51:54,885 INFO L168 Benchmark]: Boogie Preprocessor took 37.72 ms. Allocated memory is still 331.4 MB. Free memory was 293.5 MB in the beginning and 292.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 00:51:54,886 INFO L168 Benchmark]: RCFGBuilder took 567.73 ms. Allocated memory is still 331.4 MB. Free memory was 292.1 MB in the beginning and 269.7 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-26 00:51:54,886 INFO L168 Benchmark]: TraceAbstraction took 4327.44 ms. Allocated memory was 331.4 MB in the beginning and 398.5 MB in the end (delta: 67.1 MB). Free memory was 269.0 MB in the beginning and 290.8 MB in the end (delta: -21.8 MB). Peak memory consumption was 46.8 MB. Max. memory is 16.0 GB. [2021-03-26 00:51:54,889 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.81 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 580.96 ms. Allocated memory was 255.9 MB in the beginning and 331.4 MB in the end (delta: 75.5 MB). Free memory was 232.8 MB in the beginning and 294.9 MB in the end (delta: -62.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 66.17 ms. Allocated memory is still 331.4 MB. Free memory was 294.9 MB in the beginning and 293.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 37.72 ms. Allocated memory is still 331.4 MB. Free memory was 293.5 MB in the beginning and 292.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 567.73 ms. Allocated memory is still 331.4 MB. Free memory was 292.1 MB in the beginning and 269.7 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4327.44 ms. Allocated memory was 331.4 MB in the beginning and 398.5 MB in the end (delta: 67.1 MB). Free memory was 269.0 MB in the beginning and 290.8 MB in the end (delta: -21.8 MB). Peak memory consumption was 46.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1872.9ms, 69 PlacesBefore, 32 PlacesAfterwards, 60 TransitionsBefore, 22 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 38 TotalNumberOfCompositions, 1134 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 609, positive: 567, positive conditional: 567, positive unconditional: 0, negative: 42, negative conditional: 42, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 524, positive: 495, positive conditional: 0, positive unconditional: 495, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 524, positive: 495, positive conditional: 0, positive unconditional: 495, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 524, positive: 493, positive conditional: 0, positive unconditional: 493, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 31, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 143, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 129, negative conditional: 0, negative unconditional: 129, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 609, positive: 72, positive conditional: 72, positive unconditional: 0, negative: 13, negative conditional: 13, negative unconditional: 0, unknown: 524, unknown conditional: 524, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 20, Positive conditional cache size: 20, Positive unconditional cache size: 0, Negative cache size: 6, Negative conditional cache size: 6, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 927.8ms, 32 PlacesBefore, 27 PlacesAfterwards, 22 TransitionsBefore, 17 TransitionsAfterwards, 158 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 435 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 153, positive: 113, positive conditional: 113, positive unconditional: 0, negative: 40, negative conditional: 40, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 73, positive: 57, positive conditional: 9, positive unconditional: 48, negative: 16, negative conditional: 2, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 73, positive: 57, positive conditional: 9, positive unconditional: 48, negative: 16, negative conditional: 2, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 73, positive: 51, positive conditional: 0, positive unconditional: 51, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 22, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 16, negative conditional: 2, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 91, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 68, negative conditional: 16, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 153, positive: 56, positive conditional: 56, positive unconditional: 0, negative: 24, negative conditional: 24, negative unconditional: 0, unknown: 73, unknown conditional: 73, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 61, Positive cache size: 47, Positive conditional cache size: 47, Positive unconditional cache size: 0, Negative cache size: 14, Negative conditional cache size: 14, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.3ms, 31 PlacesBefore, 31 PlacesAfterwards, 20 TransitionsBefore, 20 TransitionsAfterwards, 98 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 38 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 61, Positive cache size: 47, Positive conditional cache size: 47, Positive unconditional cache size: 0, Negative cache size: 14, Negative conditional cache size: 14, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 26.1ms, 37 PlacesBefore, 37 PlacesAfterwards, 26 TransitionsBefore, 25 TransitionsAfterwards, 154 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 9 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 9, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 9, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 9, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 9, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 9, unknown conditional: 9, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 49, Positive cache size: 38, Positive conditional cache size: 38, Positive unconditional cache size: 0, Negative cache size: 11, Negative conditional cache size: 11, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 27.7ms, 41 PlacesBefore, 41 PlacesAfterwards, 29 TransitionsBefore, 28 TransitionsAfterwards, 150 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 9 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 9, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 9, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 9, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 9, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 9, unknown conditional: 9, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 49, Positive cache size: 38, Positive conditional cache size: 38, Positive unconditional cache size: 0, Negative cache size: 11, Negative conditional cache size: 11, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 109.6ms, 45 PlacesBefore, 42 PlacesAfterwards, 27 TransitionsBefore, 25 TransitionsAfterwards, 108 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 14 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14, positive: 14, positive conditional: 14, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 14, positive: 14, positive conditional: 14, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 14, positive: 14, positive conditional: 14, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 14, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 14, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 14, unknown conditional: 14, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 29, Positive conditional cache size: 29, Positive unconditional cache size: 0, Negative cache size: 7, Negative conditional cache size: 7, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.0ms, 34 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 29, Positive conditional cache size: 29, Positive unconditional cache size: 0, Negative cache size: 7, Negative conditional cache size: 7, Negative unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4181.1ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 438.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1952.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 27 SDtfs, 15 SDslu, 14 SDs, 0 SdLazy, 109 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 98.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 89.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=193occurred in iteration=4, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.2ms SsaConstructionTime, 129.9ms SatisfiabilityAnalysisTime, 349.2ms InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 317 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...