/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe037_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:12:37,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:12:37,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:12:37,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:12:37,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:12:37,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:12:37,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:12:37,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:12:37,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:12:37,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:12:37,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:12:37,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:12:37,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:12:37,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:12:37,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:12:37,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:12:37,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:12:37,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:12:37,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:12:37,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:12:37,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:12:37,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:12:37,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:12:37,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:12:37,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 05:12:37,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 05:12:37,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 05:12:37,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 05:12:37,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 05:12:37,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 05:12:37,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 05:12:37,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 05:12:37,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 05:12:37,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 05:12:37,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 05:12:37,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 05:12:37,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 05:12:37,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 05:12:37,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:12:37,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:12:37,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:12:37,925 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-RepeatedVariableLbe.epf [2021-03-25 05:12:37,939 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:12:37,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:12:37,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:12:37,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:12:37,940 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:12:37,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:12:37,940 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:12:37,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:12:37,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:12:37,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:12:37,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:12:37,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:12:37,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:12:37,941 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:12:37,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:12:37,941 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:12:37,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:12:37,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:12:37,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:12:37,942 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:12:37,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:12:37,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:12:37,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:12:37,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:12:37,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:12:37,942 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:12:37,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:12:37,942 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:12:37,943 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:12:37,943 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:12:37,943 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:12:38,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:12:38,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:12:38,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:12:38,161 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:12:38,161 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:12:38,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_tso.opt.i [2021-03-25 05:12:38,211 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a1b7299b/e4fb7adf372f4512b28ceb34e0f48c2f/FLAGa5ac8a36c [2021-03-25 05:12:38,630 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:12:38,630 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_tso.opt.i [2021-03-25 05:12:38,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a1b7299b/e4fb7adf372f4512b28ceb34e0f48c2f/FLAGa5ac8a36c [2021-03-25 05:12:38,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a1b7299b/e4fb7adf372f4512b28ceb34e0f48c2f [2021-03-25 05:12:38,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:12:38,964 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:12:38,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:12:38,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:12:38,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:12:38,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:12:38" (1/1) ... [2021-03-25 05:12:38,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5610347f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:38, skipping insertion in model container [2021-03-25 05:12:38,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:12:38" (1/1) ... [2021-03-25 05:12:38,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:12:39,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:12:39,145 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/safe037_tso.opt.i[949,962] [2021-03-25 05:12:39,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:12:39,237 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:12:39,287 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/safe037_tso.opt.i[949,962] [2021-03-25 05:12:39,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:12:39,376 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:12:39,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:39 WrapperNode [2021-03-25 05:12:39,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:12:39,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:12:39,378 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:12:39,378 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:12:39,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:39" (1/1) ... [2021-03-25 05:12:39,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:39" (1/1) ... [2021-03-25 05:12:39,402 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:12:39,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:12:39,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:12:39,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:12:39,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:39" (1/1) ... [2021-03-25 05:12:39,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:39" (1/1) ... [2021-03-25 05:12:39,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:39" (1/1) ... [2021-03-25 05:12:39,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:39" (1/1) ... [2021-03-25 05:12:39,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:39" (1/1) ... [2021-03-25 05:12:39,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:39" (1/1) ... [2021-03-25 05:12:39,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:39" (1/1) ... [2021-03-25 05:12:39,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:12:39,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:12:39,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:12:39,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:12:39,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:12:39,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:12:39,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:12:39,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:12:39,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:12:39,507 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 05:12:39,507 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 05:12:39,507 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 05:12:39,507 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 05:12:39,507 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 05:12:39,507 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 05:12:39,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:12:39,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:12:39,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:12:39,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:12:39,509 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 05:12:39,747 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:12:39,747 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 05:12:39,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:12:39 BoogieIcfgContainer [2021-03-25 05:12:39,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:12:39,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:12:39,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:12:39,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:12:39,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:12:38" (1/3) ... [2021-03-25 05:12:39,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e0f793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:12:39, skipping insertion in model container [2021-03-25 05:12:39,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:39" (2/3) ... [2021-03-25 05:12:39,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e0f793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:12:39, skipping insertion in model container [2021-03-25 05:12:39,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:12:39" (3/3) ... [2021-03-25 05:12:39,755 INFO L111 eAbstractionObserver]: Analyzing ICFG safe037_tso.opt.i [2021-03-25 05:12:39,759 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:12:39,762 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 05:12:39,763 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:12:39,785 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,785 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,785 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,785 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,786 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,786 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,786 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,786 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,786 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,786 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,787 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,787 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,787 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,787 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,787 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,787 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,788 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,788 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,788 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,788 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,788 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,788 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,788 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,788 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,789 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,789 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,789 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,789 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,789 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,789 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,789 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,789 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,790 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,790 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,790 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,790 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,792 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,792 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,792 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,792 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,796 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,796 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,797 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,797 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,798 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,799 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,799 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,799 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:39,800 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:12:39,815 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 05:12:39,831 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:12:39,831 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:12:39,831 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:12:39,832 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:12:39,832 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:12:39,832 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:12:39,832 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:12:39,832 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:12:39,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 76 transitions, 167 flow [2021-03-25 05:12:39,889 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2021-03-25 05:12:39,889 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:12:39,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-25 05:12:39,891 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 76 transitions, 167 flow [2021-03-25 05:12:39,910 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 61 transitions, 131 flow [2021-03-25 05:12:39,911 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:12:39,916 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 61 transitions, 131 flow [2021-03-25 05:12:39,918 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 61 transitions, 131 flow [2021-03-25 05:12:39,932 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 61 transitions, 131 flow [2021-03-25 05:12:39,941 INFO L129 PetriNetUnfolder]: 1/61 cut-off events. [2021-03-25 05:12:39,942 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:12:39,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 61 events. 1/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-25 05:12:39,944 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-25 05:12:41,221 INFO L154 LiptonReduction]: Checked pairs total: 1113 [2021-03-25 05:12:41,221 INFO L156 LiptonReduction]: Total number of compositions: 41 [2021-03-25 05:12:41,223 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1313 [2021-03-25 05:12:41,239 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-25 05:12:41,240 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:12:41,240 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:12:41,240 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:12:41,240 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:12:41,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:12:41,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1481665802, now seen corresponding path program 1 times [2021-03-25 05:12:41,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:12:41,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295746413] [2021-03-25 05:12:41,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:12:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:12:41,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:41,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:41,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:41,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:41,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:41,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:12:41,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:12:41,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295746413] [2021-03-25 05:12:41,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:12:41,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:12:41,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388224983] [2021-03-25 05:12:41,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:12:41,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:12:41,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:12:41,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:12:41,411 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 117 [2021-03-25 05:12:41,413 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 49 flow. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:41,413 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:12:41,413 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 117 [2021-03-25 05:12:41,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:12:41,450 INFO L129 PetriNetUnfolder]: 28/78 cut-off events. [2021-03-25 05:12:41,451 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:12:41,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 78 events. 28/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 249 event pairs, 12 based on Foata normal form. 8/85 useless extension candidates. Maximal degree in co-relation 135. Up to 45 conditions per place. [2021-03-25 05:12:41,452 INFO L132 encePairwiseOnDemand]: 111/117 looper letters, 5 selfloop transitions, 4 changer transitions 7/30 dead transitions. [2021-03-25 05:12:41,452 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 101 flow [2021-03-25 05:12:41,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:12:41,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:12:41,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 478 transitions. [2021-03-25 05:12:41,461 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8170940170940171 [2021-03-25 05:12:41,462 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 478 transitions. [2021-03-25 05:12:41,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 478 transitions. [2021-03-25 05:12:41,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:12:41,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 478 transitions. [2021-03-25 05:12:41,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.6) internal successors, (478), 5 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:41,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:41,472 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:41,474 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 49 flow. Second operand 5 states and 478 transitions. [2021-03-25 05:12:41,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 101 flow [2021-03-25 05:12:41,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 98 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 05:12:41,477 INFO L241 Difference]: Finished difference. Result has 34 places, 23 transitions, 82 flow [2021-03-25 05:12:41,478 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=82, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2021-03-25 05:12:41,478 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2021-03-25 05:12:41,478 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:12:41,478 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 23 transitions, 82 flow [2021-03-25 05:12:41,479 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 23 transitions, 82 flow [2021-03-25 05:12:41,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 23 transitions, 82 flow [2021-03-25 05:12:41,485 INFO L129 PetriNetUnfolder]: 23/65 cut-off events. [2021-03-25 05:12:41,485 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-03-25 05:12:41,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 65 events. 23/65 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 198 event pairs, 11 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 146. Up to 38 conditions per place. [2021-03-25 05:12:41,486 INFO L142 LiptonReduction]: Number of co-enabled transitions 158 [2021-03-25 05:12:41,766 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-03-25 05:12:41,972 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-03-25 05:12:42,033 INFO L154 LiptonReduction]: Checked pairs total: 396 [2021-03-25 05:12:42,033 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:12:42,034 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 556 [2021-03-25 05:12:42,034 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 21 transitions, 78 flow [2021-03-25 05:12:42,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:42,035 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:12:42,035 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:12:42,035 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:12:42,035 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:12:42,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:12:42,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1262281350, now seen corresponding path program 1 times [2021-03-25 05:12:42,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:12:42,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387434837] [2021-03-25 05:12:42,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:12:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:12:42,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:42,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:42,098 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-25 05:12:42,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 05:12:42,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:42,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:42,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:42,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:12:42,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:12:42,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387434837] [2021-03-25 05:12:42,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:12:42,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:12:42,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466267848] [2021-03-25 05:12:42,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:12:42,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:12:42,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:12:42,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:12:42,117 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 119 [2021-03-25 05:12:42,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 21 transitions, 78 flow. Second operand has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:42,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:12:42,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 119 [2021-03-25 05:12:42,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:12:42,172 INFO L129 PetriNetUnfolder]: 16/54 cut-off events. [2021-03-25 05:12:42,172 INFO L130 PetriNetUnfolder]: For 39/48 co-relation queries the response was YES. [2021-03-25 05:12:42,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 54 events. 16/54 cut-off events. For 39/48 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 137 event pairs, 2 based on Foata normal form. 12/65 useless extension candidates. Maximal degree in co-relation 163. Up to 35 conditions per place. [2021-03-25 05:12:42,173 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 5 selfloop transitions, 7 changer transitions 7/31 dead transitions. [2021-03-25 05:12:42,173 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 174 flow [2021-03-25 05:12:42,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 05:12:42,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 05:12:42,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 573 transitions. [2021-03-25 05:12:42,190 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8025210084033614 [2021-03-25 05:12:42,190 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 573 transitions. [2021-03-25 05:12:42,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 573 transitions. [2021-03-25 05:12:42,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:12:42,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 573 transitions. [2021-03-25 05:12:42,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.5) internal successors, (573), 6 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:42,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:42,193 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:42,193 INFO L185 Difference]: Start difference. First operand has 30 places, 21 transitions, 78 flow. Second operand 6 states and 573 transitions. [2021-03-25 05:12:42,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 174 flow [2021-03-25 05:12:42,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 168 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 05:12:42,194 INFO L241 Difference]: Finished difference. Result has 36 places, 24 transitions, 128 flow [2021-03-25 05:12:42,195 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=128, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2021-03-25 05:12:42,195 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2021-03-25 05:12:42,195 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:12:42,195 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 24 transitions, 128 flow [2021-03-25 05:12:42,196 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 24 transitions, 128 flow [2021-03-25 05:12:42,196 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 24 transitions, 128 flow [2021-03-25 05:12:42,200 INFO L129 PetriNetUnfolder]: 11/41 cut-off events. [2021-03-25 05:12:42,200 INFO L130 PetriNetUnfolder]: For 55/61 co-relation queries the response was YES. [2021-03-25 05:12:42,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 41 events. 11/41 cut-off events. For 55/61 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 86 event pairs, 2 based on Foata normal form. 3/43 useless extension candidates. Maximal degree in co-relation 129. Up to 23 conditions per place. [2021-03-25 05:12:42,201 INFO L142 LiptonReduction]: Number of co-enabled transitions 158 [2021-03-25 05:12:42,202 INFO L154 LiptonReduction]: Checked pairs total: 163 [2021-03-25 05:12:42,202 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:12:42,202 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-25 05:12:42,203 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 128 flow [2021-03-25 05:12:42,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:42,203 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:12:42,203 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:12:42,204 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:12:42,204 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:12:42,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:12:42,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1941405362, now seen corresponding path program 1 times [2021-03-25 05:12:42,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:12:42,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752754363] [2021-03-25 05:12:42,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:12:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:12:42,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:42,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:42,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:42,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:42,286 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-25 05:12:42,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 05:12:42,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:42,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:42,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:42,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:12:42,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:12:42,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752754363] [2021-03-25 05:12:42,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:12:42,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 05:12:42,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434795834] [2021-03-25 05:12:42,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:12:42,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:12:42,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:12:42,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:12:42,297 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 119 [2021-03-25 05:12:42,297 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 128 flow. Second operand has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:42,297 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:12:42,297 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 119 [2021-03-25 05:12:42,298 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:12:42,343 INFO L129 PetriNetUnfolder]: 7/33 cut-off events. [2021-03-25 05:12:42,343 INFO L130 PetriNetUnfolder]: For 74/94 co-relation queries the response was YES. [2021-03-25 05:12:42,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 33 events. 7/33 cut-off events. For 74/94 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 14/46 useless extension candidates. Maximal degree in co-relation 121. Up to 20 conditions per place. [2021-03-25 05:12:42,344 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 2 selfloop transitions, 10 changer transitions 4/28 dead transitions. [2021-03-25 05:12:42,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 28 transitions, 196 flow [2021-03-25 05:12:42,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:12:42,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:12:42,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 662 transitions. [2021-03-25 05:12:42,349 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7947178871548619 [2021-03-25 05:12:42,349 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 662 transitions. [2021-03-25 05:12:42,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 662 transitions. [2021-03-25 05:12:42,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:12:42,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 662 transitions. [2021-03-25 05:12:42,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.57142857142857) internal successors, (662), 7 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:42,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:42,356 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:42,357 INFO L185 Difference]: Start difference. First operand has 34 places, 24 transitions, 128 flow. Second operand 7 states and 662 transitions. [2021-03-25 05:12:42,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 28 transitions, 196 flow [2021-03-25 05:12:42,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 28 transitions, 160 flow, removed 14 selfloop flow, removed 4 redundant places. [2021-03-25 05:12:42,361 INFO L241 Difference]: Finished difference. Result has 39 places, 24 transitions, 130 flow [2021-03-25 05:12:42,361 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=130, PETRI_PLACES=39, PETRI_TRANSITIONS=24} [2021-03-25 05:12:42,362 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2021-03-25 05:12:42,362 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:12:42,362 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 24 transitions, 130 flow [2021-03-25 05:12:42,363 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 24 transitions, 130 flow [2021-03-25 05:12:42,363 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 24 transitions, 130 flow [2021-03-25 05:12:42,369 INFO L129 PetriNetUnfolder]: 5/27 cut-off events. [2021-03-25 05:12:42,369 INFO L130 PetriNetUnfolder]: For 35/38 co-relation queries the response was YES. [2021-03-25 05:12:42,370 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 27 events. 5/27 cut-off events. For 35/38 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 1/27 useless extension candidates. Maximal degree in co-relation 72. Up to 11 conditions per place. [2021-03-25 05:12:42,371 INFO L142 LiptonReduction]: Number of co-enabled transitions 116 [2021-03-25 05:12:42,484 INFO L154 LiptonReduction]: Checked pairs total: 354 [2021-03-25 05:12:42,484 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:12:42,484 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 122 [2021-03-25 05:12:42,489 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 126 flow [2021-03-25 05:12:42,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:42,490 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:12:42,490 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:12:42,490 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:12:42,490 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:12:42,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:12:42,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1238153187, now seen corresponding path program 1 times [2021-03-25 05:12:42,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:12:42,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019889394] [2021-03-25 05:12:42,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:12:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:12:42,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:42,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:12:42,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:42,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:42,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:42,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:42,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:12:42,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019889394] [2021-03-25 05:12:42,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:12:42,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:12:42,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330149483] [2021-03-25 05:12:42,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:12:42,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:12:42,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:12:42,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:12:42,565 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 121 [2021-03-25 05:12:42,565 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:42,565 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:12:42,565 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 121 [2021-03-25 05:12:42,565 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:12:42,594 INFO L129 PetriNetUnfolder]: 10/39 cut-off events. [2021-03-25 05:12:42,594 INFO L130 PetriNetUnfolder]: For 75/85 co-relation queries the response was YES. [2021-03-25 05:12:42,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 39 events. 10/39 cut-off events. For 75/85 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 96 event pairs, 0 based on Foata normal form. 6/43 useless extension candidates. Maximal degree in co-relation 121. Up to 20 conditions per place. [2021-03-25 05:12:42,595 INFO L132 encePairwiseOnDemand]: 118/121 looper letters, 3 selfloop transitions, 1 changer transitions 1/23 dead transitions. [2021-03-25 05:12:42,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 23 transitions, 138 flow [2021-03-25 05:12:42,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:12:42,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:12:42,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2021-03-25 05:12:42,596 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8223140495867769 [2021-03-25 05:12:42,596 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 398 transitions. [2021-03-25 05:12:42,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 398 transitions. [2021-03-25 05:12:42,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:12:42,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 398 transitions. [2021-03-25 05:12:42,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:42,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:42,598 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:42,598 INFO L185 Difference]: Start difference. First operand has 35 places, 22 transitions, 126 flow. Second operand 4 states and 398 transitions. [2021-03-25 05:12:42,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 23 transitions, 138 flow [2021-03-25 05:12:42,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 23 transitions, 100 flow, removed 12 selfloop flow, removed 6 redundant places. [2021-03-25 05:12:42,599 INFO L241 Difference]: Finished difference. Result has 34 places, 22 transitions, 95 flow [2021-03-25 05:12:42,599 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=22} [2021-03-25 05:12:42,600 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2021-03-25 05:12:42,600 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:12:42,600 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 22 transitions, 95 flow [2021-03-25 05:12:42,600 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 22 transitions, 95 flow [2021-03-25 05:12:42,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 22 transitions, 95 flow [2021-03-25 05:12:42,602 INFO L129 PetriNetUnfolder]: 6/30 cut-off events. [2021-03-25 05:12:42,602 INFO L130 PetriNetUnfolder]: For 20/21 co-relation queries the response was YES. [2021-03-25 05:12:42,602 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 30 events. 6/30 cut-off events. For 20/21 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 1/30 useless extension candidates. Maximal degree in co-relation 66. Up to 10 conditions per place. [2021-03-25 05:12:42,602 INFO L142 LiptonReduction]: Number of co-enabled transitions 106 [2021-03-25 05:12:42,621 INFO L154 LiptonReduction]: Checked pairs total: 124 [2021-03-25 05:12:42,621 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:12:42,621 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 21 [2021-03-25 05:12:42,622 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 21 transitions, 93 flow [2021-03-25 05:12:42,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:42,622 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:12:42,622 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:12:42,623 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:12:42,623 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:12:42,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:12:42,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1172534026, now seen corresponding path program 1 times [2021-03-25 05:12:42,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:12:42,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138279469] [2021-03-25 05:12:42,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:12:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:12:42,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:42,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:12:42,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:42,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:42,689 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:12:42,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:12:42,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:12:42,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138279469] [2021-03-25 05:12:42,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:12:42,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:12:42,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169625004] [2021-03-25 05:12:42,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:12:42,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:12:42,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:12:42,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:12:42,698 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 122 [2021-03-25 05:12:42,699 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 21 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:42,699 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:12:42,699 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 122 [2021-03-25 05:12:42,699 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:12:42,723 INFO L129 PetriNetUnfolder]: 19/64 cut-off events. [2021-03-25 05:12:42,723 INFO L130 PetriNetUnfolder]: For 76/93 co-relation queries the response was YES. [2021-03-25 05:12:42,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 64 events. 19/64 cut-off events. For 76/93 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 209 event pairs, 1 based on Foata normal form. 10/71 useless extension candidates. Maximal degree in co-relation 167. Up to 20 conditions per place. [2021-03-25 05:12:42,724 INFO L132 encePairwiseOnDemand]: 117/122 looper letters, 5 selfloop transitions, 4 changer transitions 1/25 dead transitions. [2021-03-25 05:12:42,724 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 25 transitions, 129 flow [2021-03-25 05:12:42,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:12:42,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:12:42,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 383 transitions. [2021-03-25 05:12:42,726 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7848360655737705 [2021-03-25 05:12:42,726 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 383 transitions. [2021-03-25 05:12:42,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 383 transitions. [2021-03-25 05:12:42,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:12:42,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 383 transitions. [2021-03-25 05:12:42,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:42,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:42,728 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:42,728 INFO L185 Difference]: Start difference. First operand has 32 places, 21 transitions, 93 flow. Second operand 4 states and 383 transitions. [2021-03-25 05:12:42,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 25 transitions, 129 flow [2021-03-25 05:12:42,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 25 transitions, 124 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 05:12:42,731 INFO L241 Difference]: Finished difference. Result has 35 places, 24 transitions, 123 flow [2021-03-25 05:12:42,732 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2021-03-25 05:12:42,732 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2021-03-25 05:12:42,732 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:12:42,732 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 24 transitions, 123 flow [2021-03-25 05:12:42,732 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 24 transitions, 123 flow [2021-03-25 05:12:42,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 24 transitions, 123 flow [2021-03-25 05:12:42,737 INFO L129 PetriNetUnfolder]: 16/60 cut-off events. [2021-03-25 05:12:42,737 INFO L130 PetriNetUnfolder]: For 50/59 co-relation queries the response was YES. [2021-03-25 05:12:42,738 INFO L84 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 60 events. 16/60 cut-off events. For 50/59 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 199 event pairs, 0 based on Foata normal form. 4/60 useless extension candidates. Maximal degree in co-relation 164. Up to 22 conditions per place. [2021-03-25 05:12:42,738 INFO L142 LiptonReduction]: Number of co-enabled transitions 92 [2021-03-25 05:12:42,755 INFO L154 LiptonReduction]: Checked pairs total: 40 [2021-03-25 05:12:42,756 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:12:42,756 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 24 [2021-03-25 05:12:42,757 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 126 flow [2021-03-25 05:12:42,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:42,758 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:12:42,758 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:12:42,758 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 05:12:42,758 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:12:42,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:12:42,764 INFO L82 PathProgramCache]: Analyzing trace with hash -840856583, now seen corresponding path program 1 times [2021-03-25 05:12:42,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:12:42,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842138968] [2021-03-25 05:12:42,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:12:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:12:42,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:42,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:12:42,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:42,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:42,810 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:12:42,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:12:42,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:12:42,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842138968] [2021-03-25 05:12:42,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:12:42,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:12:42,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763114900] [2021-03-25 05:12:42,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:12:42,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:12:42,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:12:42,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:12:42,820 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 123 [2021-03-25 05:12:42,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:42,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:12:42,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 123 [2021-03-25 05:12:42,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:12:42,842 INFO L129 PetriNetUnfolder]: 22/79 cut-off events. [2021-03-25 05:12:42,842 INFO L130 PetriNetUnfolder]: For 129/162 co-relation queries the response was YES. [2021-03-25 05:12:42,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 79 events. 22/79 cut-off events. For 129/162 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 333 event pairs, 0 based on Foata normal form. 10/86 useless extension candidates. Maximal degree in co-relation 238. Up to 25 conditions per place. [2021-03-25 05:12:42,843 INFO L132 encePairwiseOnDemand]: 119/123 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2021-03-25 05:12:42,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 165 flow [2021-03-25 05:12:42,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:12:42,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:12:42,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 382 transitions. [2021-03-25 05:12:42,844 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7764227642276422 [2021-03-25 05:12:42,844 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 382 transitions. [2021-03-25 05:12:42,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 382 transitions. [2021-03-25 05:12:42,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:12:42,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 382 transitions. [2021-03-25 05:12:42,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:42,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:42,846 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:42,846 INFO L185 Difference]: Start difference. First operand has 35 places, 24 transitions, 126 flow. Second operand 4 states and 382 transitions. [2021-03-25 05:12:42,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 165 flow [2021-03-25 05:12:42,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 27 transitions, 146 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 05:12:42,848 INFO L241 Difference]: Finished difference. Result has 33 places, 0 transitions, 0 flow [2021-03-25 05:12:42,848 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=33, PETRI_TRANSITIONS=0} [2021-03-25 05:12:42,848 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2021-03-25 05:12:42,848 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:12:42,849 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 0 transitions, 0 flow [2021-03-25 05:12:42,849 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 0 transitions, 0 flow [2021-03-25 05:12:42,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 05:12:42,849 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 05:12:42,849 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:12:42,849 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 05:12:42,849 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 05:12:42,849 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:12:42,849 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:12:42,849 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 05:12:42,850 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 05:12:42,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:42,851 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 05:12:42,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:12:42 BasicIcfg [2021-03-25 05:12:42,853 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:12:42,854 INFO L168 Benchmark]: Toolchain (without parser) took 3890.41 ms. Allocated memory was 379.6 MB in the beginning and 476.1 MB in the end (delta: 96.5 MB). Free memory was 343.3 MB in the beginning and 276.5 MB in the end (delta: 66.8 MB). Peak memory consumption was 164.5 MB. Max. memory is 16.0 GB. [2021-03-25 05:12:42,854 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 379.6 MB. Free memory was 361.0 MB in the beginning and 360.9 MB in the end (delta: 76.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:12:42,856 INFO L168 Benchmark]: CACSL2BoogieTranslator took 407.91 ms. Allocated memory is still 379.6 MB. Free memory was 343.0 MB in the beginning and 343.8 MB in the end (delta: -776.2 kB). Peak memory consumption was 8.9 MB. Max. memory is 16.0 GB. [2021-03-25 05:12:42,858 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.80 ms. Allocated memory is still 379.6 MB. Free memory was 343.8 MB in the beginning and 341.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:12:42,858 INFO L168 Benchmark]: Boogie Preprocessor took 13.49 ms. Allocated memory is still 379.6 MB. Free memory was 341.7 MB in the beginning and 340.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:12:42,858 INFO L168 Benchmark]: RCFGBuilder took 331.95 ms. Allocated memory is still 379.6 MB. Free memory was 340.7 MB in the beginning and 316.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-25 05:12:42,861 INFO L168 Benchmark]: TraceAbstraction took 3103.45 ms. Allocated memory was 379.6 MB in the beginning and 476.1 MB in the end (delta: 96.5 MB). Free memory was 316.6 MB in the beginning and 276.5 MB in the end (delta: 40.1 MB). Peak memory consumption was 137.6 MB. Max. memory is 16.0 GB. [2021-03-25 05:12:42,862 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 379.6 MB. Free memory was 361.0 MB in the beginning and 360.9 MB in the end (delta: 76.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 407.91 ms. Allocated memory is still 379.6 MB. Free memory was 343.0 MB in the beginning and 343.8 MB in the end (delta: -776.2 kB). Peak memory consumption was 8.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.80 ms. Allocated memory is still 379.6 MB. Free memory was 343.8 MB in the beginning and 341.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.49 ms. Allocated memory is still 379.6 MB. Free memory was 341.7 MB in the beginning and 340.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 331.95 ms. Allocated memory is still 379.6 MB. Free memory was 340.7 MB in the beginning and 316.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3103.45 ms. Allocated memory was 379.6 MB in the beginning and 476.1 MB in the end (delta: 96.5 MB). Free memory was 316.6 MB in the beginning and 276.5 MB in the end (delta: 40.1 MB). Peak memory consumption was 137.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1303.4ms, 70 PlacesBefore, 30 PlacesAfterwards, 61 TransitionsBefore, 20 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 1113 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 706, positive: 665, positive conditional: 0, positive unconditional: 665, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 420, positive: 405, positive conditional: 0, positive unconditional: 405, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 420, positive: 405, positive conditional: 0, positive unconditional: 405, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 706, positive: 260, positive conditional: 0, positive unconditional: 260, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 420, unknown conditional: 0, unknown unconditional: 420] , Statistics on independence cache: Total cache size (in pairs): 40, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 554.8ms, 34 PlacesBefore, 30 PlacesAfterwards, 23 TransitionsBefore, 21 TransitionsAfterwards, 158 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 396 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 225, positive: 195, positive conditional: 0, positive unconditional: 195, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 225, positive: 191, positive conditional: 0, positive unconditional: 191, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 45, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.7ms, 36 PlacesBefore, 34 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 158 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 163 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 75, positive: 62, positive conditional: 0, positive unconditional: 62, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 75, positive: 60, positive conditional: 0, positive unconditional: 60, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 42, Positive conditional cache size: 0, Positive unconditional cache size: 42, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 121.3ms, 39 PlacesBefore, 35 PlacesAfterwards, 24 TransitionsBefore, 22 TransitionsAfterwards, 116 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 354 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 177, positive: 141, positive conditional: 0, positive unconditional: 141, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 177, positive: 138, positive conditional: 0, positive unconditional: 138, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 21.3ms, 34 PlacesBefore, 32 PlacesAfterwards, 22 TransitionsBefore, 21 TransitionsAfterwards, 106 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 124 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 60, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 60, positive: 46, positive conditional: 0, positive unconditional: 46, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 23.7ms, 35 PlacesBefore, 35 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 92 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 40 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 36, positive: 32, positive conditional: 0, positive unconditional: 32, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 36, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.5ms, 33 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: 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] , 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): 24, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - 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, 75 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3023.1ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 314.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1402.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 30 SDtfs, 16 SDslu, 15 SDs, 0 SdLazy, 108 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 101.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 81.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=3, 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: 14.8ms SsaConstructionTime, 129.5ms SatisfiabilityAnalysisTime, 283.9ms InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 293 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...