./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 43c4691e367ff0d8a9949fa90f15eddbc091ab75ed1546de74dafe83c2376639 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:29:56,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:29:56,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:29:56,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:29:56,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:29:56,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:29:56,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:29:56,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:29:56,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:29:56,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:29:56,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:29:56,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:29:56,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:29:56,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:29:56,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:29:56,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:29:56,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:29:56,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:29:56,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:29:56,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:29:56,946 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:29:56,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:29:56,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:29:56,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:29:56,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:29:56,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:29:56,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:29:56,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:29:56,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:29:56,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:29:56,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:29:56,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:29:56,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:29:56,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:29:56,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:29:56,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:29:56,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:29:56,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:29:56,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:29:56,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:29:56,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:29:56,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:29:56,966 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:29:56,996 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:29:56,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:29:56,997 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:29:56,997 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:29:56,998 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:29:56,998 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:29:56,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:29:56,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:29:56,999 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:29:56,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:29:57,000 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:29:57,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:29:57,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:29:57,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:29:57,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:29:57,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:29:57,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:29:57,001 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:29:57,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:29:57,002 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:29:57,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:29:57,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:29:57,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:29:57,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:29:57,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:29:57,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:29:57,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:29:57,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:29:57,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:29:57,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:29:57,004 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:29:57,004 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:29:57,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:29:57,004 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43c4691e367ff0d8a9949fa90f15eddbc091ab75ed1546de74dafe83c2376639 [2022-07-22 21:29:57,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:29:57,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:29:57,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:29:57,227 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:29:57,229 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:29:57,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i [2022-07-22 21:29:57,283 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b79b74bd7/69f0718dbdf64cc0b7debc45549642eb/FLAG2dba19cea [2022-07-22 21:29:57,702 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:29:57,702 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i [2022-07-22 21:29:57,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b79b74bd7/69f0718dbdf64cc0b7debc45549642eb/FLAG2dba19cea [2022-07-22 21:29:57,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b79b74bd7/69f0718dbdf64cc0b7debc45549642eb [2022-07-22 21:29:57,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:29:57,734 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:29:57,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:29:57,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:29:57,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:29:57,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:29:57" (1/1) ... [2022-07-22 21:29:57,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6df0a6c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:57, skipping insertion in model container [2022-07-22 21:29:57,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:29:57" (1/1) ... [2022-07-22 21:29:57,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:29:57,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:29:57,910 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-22 21:29:58,133 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[47275,47288] [2022-07-22 21:29:58,139 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[47463,47476] [2022-07-22 21:29:58,149 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48230,48243] [2022-07-22 21:29:58,151 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48344,48357] [2022-07-22 21:29:58,162 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48781,48794] [2022-07-22 21:29:58,163 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48837,48850] [2022-07-22 21:29:58,168 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49349,49362] [2022-07-22 21:29:58,171 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49408,49421] [2022-07-22 21:29:58,173 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49487,49500] [2022-07-22 21:29:58,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:29:58,179 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:29:58,190 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-22 21:29:58,209 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[47275,47288] [2022-07-22 21:29:58,210 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[47463,47476] [2022-07-22 21:29:58,214 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48230,48243] [2022-07-22 21:29:58,214 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48344,48357] [2022-07-22 21:29:58,216 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48781,48794] [2022-07-22 21:29:58,216 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48837,48850] [2022-07-22 21:29:58,219 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49349,49362] [2022-07-22 21:29:58,222 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49408,49421] [2022-07-22 21:29:58,223 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49487,49500] [2022-07-22 21:29:58,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:29:58,256 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:29:58,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:58 WrapperNode [2022-07-22 21:29:58,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:29:58,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:29:58,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:29:58,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:29:58,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:58" (1/1) ... [2022-07-22 21:29:58,280 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:58" (1/1) ... [2022-07-22 21:29:58,311 INFO L137 Inliner]: procedures = 278, calls = 101, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 405 [2022-07-22 21:29:58,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:29:58,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:29:58,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:29:58,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:29:58,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:58" (1/1) ... [2022-07-22 21:29:58,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:58" (1/1) ... [2022-07-22 21:29:58,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:58" (1/1) ... [2022-07-22 21:29:58,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:58" (1/1) ... [2022-07-22 21:29:58,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:58" (1/1) ... [2022-07-22 21:29:58,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:58" (1/1) ... [2022-07-22 21:29:58,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:58" (1/1) ... [2022-07-22 21:29:58,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:29:58,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:29:58,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:29:58,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:29:58,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:58" (1/1) ... [2022-07-22 21:29:58,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:29:58,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:29:58,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 21:29:58,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 21:29:58,408 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-07-22 21:29:58,408 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-07-22 21:29:58,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:29:58,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 21:29:58,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:29:58,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:29:58,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:29:58,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 21:29:58,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:29:58,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 21:29:58,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:29:58,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:29:58,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:29:58,410 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:29:58,559 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:29:58,561 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:29:59,048 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:29:59,066 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:29:59,067 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-22 21:29:59,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:29:59 BoogieIcfgContainer [2022-07-22 21:29:59,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:29:59,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:29:59,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:29:59,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:29:59,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:29:57" (1/3) ... [2022-07-22 21:29:59,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35315d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:29:59, skipping insertion in model container [2022-07-22 21:29:59,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:58" (2/3) ... [2022-07-22 21:29:59,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35315d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:29:59, skipping insertion in model container [2022-07-22 21:29:59,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:29:59" (3/3) ... [2022-07-22 21:29:59,079 INFO L111 eAbstractionObserver]: Analyzing ICFG divinefifo_1w1r.i [2022-07-22 21:29:59,083 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:29:59,089 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:29:59,090 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-07-22 21:29:59,090 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:29:59,169 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-22 21:29:59,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 467 places, 495 transitions, 998 flow [2022-07-22 21:29:59,367 INFO L129 PetriNetUnfolder]: 32/494 cut-off events. [2022-07-22 21:29:59,367 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-22 21:29:59,375 INFO L84 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 494 events. 32/494 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1130 event pairs, 0 based on Foata normal form. 0/451 useless extension candidates. Maximal degree in co-relation 340. Up to 3 conditions per place. [2022-07-22 21:29:59,376 INFO L82 GeneralOperation]: Start removeDead. Operand has 467 places, 495 transitions, 998 flow [2022-07-22 21:29:59,384 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 448 places, 475 transitions, 956 flow [2022-07-22 21:29:59,392 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:29:59,398 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@33c7916a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5591b2ad [2022-07-22 21:29:59,398 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-07-22 21:29:59,406 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2022-07-22 21:29:59,406 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:29:59,407 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:29:59,409 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:29:59,409 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-22 21:29:59,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:29:59,414 INFO L85 PathProgramCache]: Analyzing trace with hash 894712245, now seen corresponding path program 1 times [2022-07-22 21:29:59,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:29:59,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338746333] [2022-07-22 21:29:59,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:29:59,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:29:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:29:59,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:29:59,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:29:59,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338746333] [2022-07-22 21:29:59,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338746333] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:29:59,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:29:59,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 21:29:59,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810621311] [2022-07-22 21:29:59,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:29:59,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 21:29:59,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:29:59,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 21:29:59,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-22 21:29:59,965 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 495 [2022-07-22 21:29:59,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 475 transitions, 956 flow. Second operand has 12 states, 12 states have (on average 305.9166666666667) internal successors, (3671), 12 states have internal predecessors, (3671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:29:59,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:29:59,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 495 [2022-07-22 21:29:59,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:01,598 INFO L129 PetriNetUnfolder]: 1940/7030 cut-off events. [2022-07-22 21:30:01,621 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-22 21:30:01,634 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10498 conditions, 7030 events. 1940/7030 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 59332 event pairs, 1154 based on Foata normal form. 425/6954 useless extension candidates. Maximal degree in co-relation 10302. Up to 2759 conditions per place. [2022-07-22 21:30:01,669 INFO L132 encePairwiseOnDemand]: 456/495 looper letters, 164 selfloop transitions, 24 changer transitions 0/475 dead transitions. [2022-07-22 21:30:01,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 475 transitions, 1332 flow [2022-07-22 21:30:01,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 21:30:01,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-22 21:30:01,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4460 transitions. [2022-07-22 21:30:01,703 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6435786435786436 [2022-07-22 21:30:01,704 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4460 transitions. [2022-07-22 21:30:01,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4460 transitions. [2022-07-22 21:30:01,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:01,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4460 transitions. [2022-07-22 21:30:01,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 318.57142857142856) internal successors, (4460), 14 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:01,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 495.0) internal successors, (7425), 15 states have internal predecessors, (7425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:01,740 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 495.0) internal successors, (7425), 15 states have internal predecessors, (7425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:01,742 INFO L186 Difference]: Start difference. First operand has 448 places, 475 transitions, 956 flow. Second operand 14 states and 4460 transitions. [2022-07-22 21:30:01,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 475 transitions, 1332 flow [2022-07-22 21:30:01,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 475 transitions, 1328 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:30:01,762 INFO L242 Difference]: Finished difference. Result has 459 places, 460 transitions, 970 flow [2022-07-22 21:30:01,764 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=970, PETRI_PLACES=459, PETRI_TRANSITIONS=460} [2022-07-22 21:30:01,768 INFO L279 CegarLoopForPetriNet]: 448 programPoint places, 11 predicate places. [2022-07-22 21:30:01,769 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 460 transitions, 970 flow [2022-07-22 21:30:01,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 305.9166666666667) internal successors, (3671), 12 states have internal predecessors, (3671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:01,772 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:01,775 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:30:01,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:30:01,775 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-22 21:30:01,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:01,777 INFO L85 PathProgramCache]: Analyzing trace with hash 775770239, now seen corresponding path program 1 times [2022-07-22 21:30:01,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:01,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925966413] [2022-07-22 21:30:01,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:01,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:02,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:02,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:02,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925966413] [2022-07-22 21:30:02,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925966413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:02,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:02,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-22 21:30:02,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49441225] [2022-07-22 21:30:02,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:02,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 21:30:02,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:02,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 21:30:02,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2022-07-22 21:30:02,342 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 495 [2022-07-22 21:30:02,372 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 460 transitions, 970 flow. Second operand has 22 states, 22 states have (on average 259.95454545454544) internal successors, (5719), 22 states have internal predecessors, (5719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:02,372 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:02,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 495 [2022-07-22 21:30:02,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:06,640 INFO L129 PetriNetUnfolder]: 4650/14396 cut-off events. [2022-07-22 21:30:06,640 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-07-22 21:30:06,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23304 conditions, 14396 events. 4650/14396 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 129326 event pairs, 166 based on Foata normal form. 0/13710 useless extension candidates. Maximal degree in co-relation 19793. Up to 3542 conditions per place. [2022-07-22 21:30:06,716 INFO L132 encePairwiseOnDemand]: 450/495 looper letters, 383 selfloop transitions, 54 changer transitions 0/680 dead transitions. [2022-07-22 21:30:06,717 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 680 transitions, 2305 flow [2022-07-22 21:30:06,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-22 21:30:06,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-22 21:30:06,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 8694 transitions. [2022-07-22 21:30:06,732 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5488636363636363 [2022-07-22 21:30:06,732 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 8694 transitions. [2022-07-22 21:30:06,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 8694 transitions. [2022-07-22 21:30:06,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:06,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 8694 transitions. [2022-07-22 21:30:06,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 271.6875) internal successors, (8694), 32 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:06,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 495.0) internal successors, (16335), 33 states have internal predecessors, (16335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:06,773 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 495.0) internal successors, (16335), 33 states have internal predecessors, (16335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:06,773 INFO L186 Difference]: Start difference. First operand has 459 places, 460 transitions, 970 flow. Second operand 32 states and 8694 transitions. [2022-07-22 21:30:06,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 680 transitions, 2305 flow [2022-07-22 21:30:06,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 680 transitions, 2237 flow, removed 0 selfloop flow, removed 13 redundant places. [2022-07-22 21:30:06,791 INFO L242 Difference]: Finished difference. Result has 477 places, 475 transitions, 1095 flow [2022-07-22 21:30:06,792 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1095, PETRI_PLACES=477, PETRI_TRANSITIONS=475} [2022-07-22 21:30:06,793 INFO L279 CegarLoopForPetriNet]: 448 programPoint places, 29 predicate places. [2022-07-22 21:30:06,793 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 475 transitions, 1095 flow [2022-07-22 21:30:06,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 259.95454545454544) internal successors, (5719), 22 states have internal predecessors, (5719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:06,795 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:06,795 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:30:06,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:30:06,796 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-22 21:30:06,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:06,796 INFO L85 PathProgramCache]: Analyzing trace with hash -2057725171, now seen corresponding path program 1 times [2022-07-22 21:30:06,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:06,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110318586] [2022-07-22 21:30:06,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:06,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:06,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:06,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:06,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110318586] [2022-07-22 21:30:06,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110318586] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:06,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:06,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:30:06,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430868368] [2022-07-22 21:30:06,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:06,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:30:06,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:06,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:30:06,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:30:06,886 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 467 out of 495 [2022-07-22 21:30:06,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 475 transitions, 1095 flow. Second operand has 5 states, 5 states have (on average 468.6) internal successors, (2343), 5 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:06,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:06,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 467 of 495 [2022-07-22 21:30:06,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:07,037 INFO L129 PetriNetUnfolder]: 29/878 cut-off events. [2022-07-22 21:30:07,038 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-07-22 21:30:07,042 INFO L84 FinitePrefix]: Finished finitePrefix Result has 996 conditions, 878 events. 29/878 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 2207 event pairs, 0 based on Foata normal form. 0/838 useless extension candidates. Maximal degree in co-relation 634. Up to 18 conditions per place. [2022-07-22 21:30:07,045 INFO L132 encePairwiseOnDemand]: 487/495 looper letters, 8 selfloop transitions, 7 changer transitions 0/476 dead transitions. [2022-07-22 21:30:07,045 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 476 transitions, 1124 flow [2022-07-22 21:30:07,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:30:07,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:30:07,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2351 transitions. [2022-07-22 21:30:07,050 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9498989898989899 [2022-07-22 21:30:07,050 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2351 transitions. [2022-07-22 21:30:07,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2351 transitions. [2022-07-22 21:30:07,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:07,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2351 transitions. [2022-07-22 21:30:07,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 470.2) internal successors, (2351), 5 states have internal predecessors, (2351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:07,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 495.0) internal successors, (2970), 6 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:07,057 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 495.0) internal successors, (2970), 6 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:07,057 INFO L186 Difference]: Start difference. First operand has 477 places, 475 transitions, 1095 flow. Second operand 5 states and 2351 transitions. [2022-07-22 21:30:07,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 476 transitions, 1124 flow [2022-07-22 21:30:07,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 476 transitions, 1069 flow, removed 1 selfloop flow, removed 26 redundant places. [2022-07-22 21:30:07,064 INFO L242 Difference]: Finished difference. Result has 457 places, 475 transitions, 1061 flow [2022-07-22 21:30:07,065 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1061, PETRI_PLACES=457, PETRI_TRANSITIONS=475} [2022-07-22 21:30:07,065 INFO L279 CegarLoopForPetriNet]: 448 programPoint places, 9 predicate places. [2022-07-22 21:30:07,065 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 475 transitions, 1061 flow [2022-07-22 21:30:07,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 468.6) internal successors, (2343), 5 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:07,067 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:07,067 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:30:07,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:30:07,067 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-22 21:30:07,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:07,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1711191470, now seen corresponding path program 1 times [2022-07-22 21:30:07,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:07,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880381615] [2022-07-22 21:30:07,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:07,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:07,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:07,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:07,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880381615] [2022-07-22 21:30:07,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880381615] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:07,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:07,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:30:07,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930872930] [2022-07-22 21:30:07,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:07,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:30:07,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:07,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:30:07,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:30:07,134 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 470 out of 495 [2022-07-22 21:30:07,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 475 transitions, 1061 flow. Second operand has 3 states, 3 states have (on average 471.3333333333333) internal successors, (1414), 3 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:07,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:07,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 470 of 495 [2022-07-22 21:30:07,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:07,270 INFO L129 PetriNetUnfolder]: 38/1125 cut-off events. [2022-07-22 21:30:07,270 INFO L130 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-07-22 21:30:07,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1254 conditions, 1125 events. 38/1125 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 3134 event pairs, 1 based on Foata normal form. 0/1074 useless extension candidates. Maximal degree in co-relation 991. Up to 22 conditions per place. [2022-07-22 21:30:07,283 INFO L132 encePairwiseOnDemand]: 492/495 looper letters, 13 selfloop transitions, 2 changer transitions 0/479 dead transitions. [2022-07-22 21:30:07,283 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 479 transitions, 1095 flow [2022-07-22 21:30:07,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:30:07,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:30:07,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1426 transitions. [2022-07-22 21:30:07,286 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9602693602693603 [2022-07-22 21:30:07,286 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1426 transitions. [2022-07-22 21:30:07,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1426 transitions. [2022-07-22 21:30:07,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:07,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1426 transitions. [2022-07-22 21:30:07,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 475.3333333333333) internal successors, (1426), 3 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:07,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 495.0) internal successors, (1980), 4 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:07,290 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 495.0) internal successors, (1980), 4 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:07,290 INFO L186 Difference]: Start difference. First operand has 457 places, 475 transitions, 1061 flow. Second operand 3 states and 1426 transitions. [2022-07-22 21:30:07,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 479 transitions, 1095 flow [2022-07-22 21:30:07,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 479 transitions, 1086 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-07-22 21:30:07,298 INFO L242 Difference]: Finished difference. Result has 458 places, 475 transitions, 1058 flow [2022-07-22 21:30:07,299 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1058, PETRI_PLACES=458, PETRI_TRANSITIONS=475} [2022-07-22 21:30:07,299 INFO L279 CegarLoopForPetriNet]: 448 programPoint places, 10 predicate places. [2022-07-22 21:30:07,300 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 475 transitions, 1058 flow [2022-07-22 21:30:07,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 471.3333333333333) internal successors, (1414), 3 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:07,300 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:07,300 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:30:07,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:30:07,300 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-22 21:30:07,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:07,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1378553318, now seen corresponding path program 1 times [2022-07-22 21:30:07,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:07,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822916476] [2022-07-22 21:30:07,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:07,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:07,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:07,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:07,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822916476] [2022-07-22 21:30:07,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822916476] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:07,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:07,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:30:07,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313226965] [2022-07-22 21:30:07,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:07,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:30:07,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:07,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:30:07,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:30:07,582 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 495 [2022-07-22 21:30:07,586 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 475 transitions, 1058 flow. Second operand has 19 states, 19 states have (on average 327.36842105263156) internal successors, (6220), 19 states have internal predecessors, (6220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:07,586 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:07,586 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 495 [2022-07-22 21:30:07,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:11,449 INFO L129 PetriNetUnfolder]: 5804/22022 cut-off events. [2022-07-22 21:30:11,449 INFO L130 PetriNetUnfolder]: For 413/413 co-relation queries the response was YES. [2022-07-22 21:30:11,492 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33493 conditions, 22022 events. 5804/22022 cut-off events. For 413/413 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 209971 event pairs, 1163 based on Foata normal form. 0/21102 useless extension candidates. Maximal degree in co-relation 17192. Up to 5186 conditions per place. [2022-07-22 21:30:11,542 INFO L132 encePairwiseOnDemand]: 463/495 looper letters, 343 selfloop transitions, 44 changer transitions 0/707 dead transitions. [2022-07-22 21:30:11,543 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 707 transitions, 2305 flow [2022-07-22 21:30:11,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 21:30:11,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-22 21:30:11,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 7537 transitions. [2022-07-22 21:30:11,553 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6921028466483012 [2022-07-22 21:30:11,553 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 7537 transitions. [2022-07-22 21:30:11,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 7537 transitions. [2022-07-22 21:30:11,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:11,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 7537 transitions. [2022-07-22 21:30:11,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 342.59090909090907) internal successors, (7537), 22 states have internal predecessors, (7537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:11,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 495.0) internal successors, (11385), 23 states have internal predecessors, (11385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:11,578 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 495.0) internal successors, (11385), 23 states have internal predecessors, (11385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:11,578 INFO L186 Difference]: Start difference. First operand has 458 places, 475 transitions, 1058 flow. Second operand 22 states and 7537 transitions. [2022-07-22 21:30:11,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 707 transitions, 2305 flow [2022-07-22 21:30:11,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 707 transitions, 2303 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:30:11,589 INFO L242 Difference]: Finished difference. Result has 486 places, 507 transitions, 1296 flow [2022-07-22 21:30:11,590 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=1056, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1296, PETRI_PLACES=486, PETRI_TRANSITIONS=507} [2022-07-22 21:30:11,591 INFO L279 CegarLoopForPetriNet]: 448 programPoint places, 38 predicate places. [2022-07-22 21:30:11,591 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 507 transitions, 1296 flow [2022-07-22 21:30:11,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 327.36842105263156) internal successors, (6220), 19 states have internal predecessors, (6220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:11,597 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:11,598 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:30:11,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:30:11,598 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-22 21:30:11,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:11,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1950405236, now seen corresponding path program 1 times [2022-07-22 21:30:11,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:11,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540267734] [2022-07-22 21:30:11,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:11,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:11,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:11,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:11,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540267734] [2022-07-22 21:30:11,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540267734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:11,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:11,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:30:11,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561924593] [2022-07-22 21:30:11,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:11,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:30:11,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:11,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:30:11,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:30:11,697 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 495 [2022-07-22 21:30:11,698 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 507 transitions, 1296 flow. Second operand has 5 states, 5 states have (on average 425.0) internal successors, (2125), 5 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:11,699 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:11,699 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 495 [2022-07-22 21:30:11,699 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:12,527 INFO L129 PetriNetUnfolder]: 275/5422 cut-off events. [2022-07-22 21:30:12,528 INFO L130 PetriNetUnfolder]: For 202/215 co-relation queries the response was YES. [2022-07-22 21:30:12,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6742 conditions, 5422 events. 275/5422 cut-off events. For 202/215 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 41399 event pairs, 2 based on Foata normal form. 5/5163 useless extension candidates. Maximal degree in co-relation 6543. Up to 354 conditions per place. [2022-07-22 21:30:12,587 INFO L132 encePairwiseOnDemand]: 472/495 looper letters, 76 selfloop transitions, 22 changer transitions 0/531 dead transitions. [2022-07-22 21:30:12,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 531 transitions, 1545 flow [2022-07-22 21:30:12,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 21:30:12,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-22 21:30:12,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2604 transitions. [2022-07-22 21:30:12,660 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8767676767676768 [2022-07-22 21:30:12,660 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2604 transitions. [2022-07-22 21:30:12,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2604 transitions. [2022-07-22 21:30:12,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:12,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2604 transitions. [2022-07-22 21:30:12,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 434.0) internal successors, (2604), 6 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:12,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 495.0) internal successors, (3465), 7 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:12,668 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 495.0) internal successors, (3465), 7 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:12,668 INFO L186 Difference]: Start difference. First operand has 486 places, 507 transitions, 1296 flow. Second operand 6 states and 2604 transitions. [2022-07-22 21:30:12,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 531 transitions, 1545 flow [2022-07-22 21:30:12,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 531 transitions, 1523 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-07-22 21:30:12,678 INFO L242 Difference]: Finished difference. Result has 484 places, 524 transitions, 1424 flow [2022-07-22 21:30:12,678 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1424, PETRI_PLACES=484, PETRI_TRANSITIONS=524} [2022-07-22 21:30:12,679 INFO L279 CegarLoopForPetriNet]: 448 programPoint places, 36 predicate places. [2022-07-22 21:30:12,679 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 524 transitions, 1424 flow [2022-07-22 21:30:12,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 425.0) internal successors, (2125), 5 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:12,680 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:12,680 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:30:12,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:30:12,680 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-22 21:30:12,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:12,681 INFO L85 PathProgramCache]: Analyzing trace with hash 675793813, now seen corresponding path program 1 times [2022-07-22 21:30:12,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:12,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416872896] [2022-07-22 21:30:12,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:12,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:14,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:14,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:14,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416872896] [2022-07-22 21:30:14,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416872896] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:14,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:14,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-07-22 21:30:14,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550654944] [2022-07-22 21:30:14,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:14,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-07-22 21:30:14,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:14,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-07-22 21:30:14,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1342, Unknown=0, NotChecked=0, Total=1482 [2022-07-22 21:30:14,248 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 495 [2022-07-22 21:30:14,254 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 524 transitions, 1424 flow. Second operand has 39 states, 39 states have (on average 258.9230769230769) internal successors, (10098), 39 states have internal predecessors, (10098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:14,254 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:14,254 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 495 [2022-07-22 21:30:14,254 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:46,015 INFO L129 PetriNetUnfolder]: 25138/81198 cut-off events. [2022-07-22 21:30:46,016 INFO L130 PetriNetUnfolder]: For 11415/11427 co-relation queries the response was YES. [2022-07-22 21:30:46,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143144 conditions, 81198 events. 25138/81198 cut-off events. For 11415/11427 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 900943 event pairs, 3102 based on Foata normal form. 66/77909 useless extension candidates. Maximal degree in co-relation 138212. Up to 20921 conditions per place. [2022-07-22 21:30:46,596 INFO L132 encePairwiseOnDemand]: 424/495 looper letters, 1639 selfloop transitions, 312 changer transitions 0/2201 dead transitions. [2022-07-22 21:30:46,596 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 2201 transitions, 10567 flow [2022-07-22 21:30:46,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-07-22 21:30:46,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2022-07-22 21:30:46,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 25539 transitions. [2022-07-22 21:30:46,624 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5608036890645586 [2022-07-22 21:30:46,624 INFO L72 ComplementDD]: Start complementDD. Operand 92 states and 25539 transitions. [2022-07-22 21:30:46,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 92 states and 25539 transitions. [2022-07-22 21:30:46,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:46,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 92 states and 25539 transitions. [2022-07-22 21:30:46,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 93 states, 92 states have (on average 277.5978260869565) internal successors, (25539), 92 states have internal predecessors, (25539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:46,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 93 states, 93 states have (on average 495.0) internal successors, (46035), 93 states have internal predecessors, (46035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:46,726 INFO L81 ComplementDD]: Finished complementDD. Result has 93 states, 93 states have (on average 495.0) internal successors, (46035), 93 states have internal predecessors, (46035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:46,727 INFO L186 Difference]: Start difference. First operand has 484 places, 524 transitions, 1424 flow. Second operand 92 states and 25539 transitions. [2022-07-22 21:30:46,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 2201 transitions, 10567 flow [2022-07-22 21:30:46,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 2201 transitions, 10508 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-22 21:30:46,795 INFO L242 Difference]: Finished difference. Result has 628 places, 810 transitions, 3908 flow [2022-07-22 21:30:46,796 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=92, PETRI_FLOW=3908, PETRI_PLACES=628, PETRI_TRANSITIONS=810} [2022-07-22 21:30:46,797 INFO L279 CegarLoopForPetriNet]: 448 programPoint places, 180 predicate places. [2022-07-22 21:30:46,797 INFO L495 AbstractCegarLoop]: Abstraction has has 628 places, 810 transitions, 3908 flow [2022-07-22 21:30:46,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 258.9230769230769) internal successors, (10098), 39 states have internal predecessors, (10098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:46,799 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:46,799 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:30:46,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:30:46,799 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-22 21:30:46,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:46,800 INFO L85 PathProgramCache]: Analyzing trace with hash 31416169, now seen corresponding path program 2 times [2022-07-22 21:30:46,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:46,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855085508] [2022-07-22 21:30:46,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:46,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:47,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:47,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:47,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855085508] [2022-07-22 21:30:47,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855085508] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:47,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:47,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-22 21:30:47,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158916743] [2022-07-22 21:30:47,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:47,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-22 21:30:47,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:47,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-22 21:30:47,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2022-07-22 21:30:47,496 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 495 [2022-07-22 21:30:47,503 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 628 places, 810 transitions, 3908 flow. Second operand has 26 states, 26 states have (on average 285.3076923076923) internal successors, (7418), 26 states have internal predecessors, (7418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:47,503 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:47,503 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 495 [2022-07-22 21:30:47,503 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:31:14,074 INFO L129 PetriNetUnfolder]: 23538/86443 cut-off events. [2022-07-22 21:31:14,074 INFO L130 PetriNetUnfolder]: For 114746/115092 co-relation queries the response was YES. [2022-07-22 21:31:15,715 INFO L84 FinitePrefix]: Finished finitePrefix Result has 199617 conditions, 86443 events. 23538/86443 cut-off events. For 114746/115092 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 1025538 event pairs, 1304 based on Foata normal form. 306/83842 useless extension candidates. Maximal degree in co-relation 196987. Up to 13994 conditions per place. [2022-07-22 21:31:15,929 INFO L132 encePairwiseOnDemand]: 416/495 looper letters, 1373 selfloop transitions, 528 changer transitions 0/2217 dead transitions. [2022-07-22 21:31:15,929 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 695 places, 2217 transitions, 14068 flow [2022-07-22 21:31:15,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-07-22 21:31:15,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2022-07-22 21:31:15,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 21040 transitions. [2022-07-22 21:31:15,944 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6160152247108769 [2022-07-22 21:31:15,945 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 21040 transitions. [2022-07-22 21:31:15,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 21040 transitions. [2022-07-22 21:31:15,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:31:15,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 21040 transitions. [2022-07-22 21:31:15,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 304.92753623188406) internal successors, (21040), 69 states have internal predecessors, (21040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:15,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 495.0) internal successors, (34650), 70 states have internal predecessors, (34650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:16,005 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 495.0) internal successors, (34650), 70 states have internal predecessors, (34650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:16,005 INFO L186 Difference]: Start difference. First operand has 628 places, 810 transitions, 3908 flow. Second operand 69 states and 21040 transitions. [2022-07-22 21:31:16,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 695 places, 2217 transitions, 14068 flow [2022-07-22 21:31:16,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 672 places, 2217 transitions, 13878 flow, removed 72 selfloop flow, removed 23 redundant places. [2022-07-22 21:31:16,510 INFO L242 Difference]: Finished difference. Result has 714 places, 1223 transitions, 8142 flow [2022-07-22 21:31:16,511 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=3344, PETRI_DIFFERENCE_MINUEND_PLACES=604, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=8142, PETRI_PLACES=714, PETRI_TRANSITIONS=1223} [2022-07-22 21:31:16,511 INFO L279 CegarLoopForPetriNet]: 448 programPoint places, 266 predicate places. [2022-07-22 21:31:16,511 INFO L495 AbstractCegarLoop]: Abstraction has has 714 places, 1223 transitions, 8142 flow [2022-07-22 21:31:16,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 285.3076923076923) internal successors, (7418), 26 states have internal predecessors, (7418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:16,513 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:31:16,513 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:31:16,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:31:16,513 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-22 21:31:16,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:31:16,514 INFO L85 PathProgramCache]: Analyzing trace with hash 602997045, now seen corresponding path program 3 times [2022-07-22 21:31:16,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:31:16,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157014828] [2022-07-22 21:31:16,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:31:16,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:31:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:31:17,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:31:17,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:31:17,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157014828] [2022-07-22 21:31:17,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157014828] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:31:17,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:31:17,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-07-22 21:31:17,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034828643] [2022-07-22 21:31:17,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:31:17,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-22 21:31:17,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:31:17,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-22 21:31:17,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1206, Unknown=0, NotChecked=0, Total=1332 [2022-07-22 21:31:17,871 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 495 [2022-07-22 21:31:17,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 714 places, 1223 transitions, 8142 flow. Second operand has 37 states, 37 states have (on average 272.86486486486484) internal successors, (10096), 37 states have internal predecessors, (10096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:17,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:31:17,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 495 [2022-07-22 21:31:17,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand