./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 35987657 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-?-3598765 [2022-07-21 08:47:38,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:47:38,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:47:38,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:47:38,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:47:38,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:47:38,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:47:38,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:47:38,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:47:38,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:47:38,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:47:38,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:47:38,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:47:38,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:47:38,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:47:38,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:47:38,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:47:38,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:47:38,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:47:38,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:47:38,473 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:47:38,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:47:38,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:47:38,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:47:38,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:47:38,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:47:38,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:47:38,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:47:38,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:47:38,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:47:38,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:47:38,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:47:38,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:47:38,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:47:38,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:47:38,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:47:38,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:47:38,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:47:38,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:47:38,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:47:38,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:47:38,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:47:38,485 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:47:38,531 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:47:38,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:47:38,540 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:47:38,540 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:47:38,541 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:47:38,541 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:47:38,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:47:38,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:47:38,542 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:47:38,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:47:38,543 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:47:38,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:47:38,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:47:38,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:47:38,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:47:38,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:47:38,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:47:38,544 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:47:38,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:47:38,544 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:47:38,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:47:38,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:47:38,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:47:38,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:47:38,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:47:38,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:47:38,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:47:38,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:47:38,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:47:38,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:47:38,546 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:47:38,546 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:47:38,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:47:38,547 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43c4691e367ff0d8a9949fa90f15eddbc091ab75ed1546de74dafe83c2376639 [2022-07-21 08:47:38,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:47:38,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:47:38,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:47:38,843 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:47:38,844 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:47:38,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i [2022-07-21 08:47:38,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/965b186c8/beec52e9973c4694985793e7ed63de1a/FLAG8a31ea4b9 [2022-07-21 08:47:39,321 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:47:39,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i [2022-07-21 08:47:39,335 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/965b186c8/beec52e9973c4694985793e7ed63de1a/FLAG8a31ea4b9 [2022-07-21 08:47:39,645 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/965b186c8/beec52e9973c4694985793e7ed63de1a [2022-07-21 08:47:39,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:47:39,648 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:47:39,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:47:39,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:47:39,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:47:39,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:47:39" (1/1) ... [2022-07-21 08:47:39,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64aaab32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:39, skipping insertion in model container [2022-07-21 08:47:39,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:47:39" (1/1) ... [2022-07-21 08:47:39,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:47:39,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:47:39,779 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-21 08:47:40,178 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] [2022-07-21 08:47:40,183 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] [2022-07-21 08:47:40,196 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] [2022-07-21 08:47:40,198 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] [2022-07-21 08:47:40,205 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] [2022-07-21 08:47:40,205 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] [2022-07-21 08:47:40,215 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] [2022-07-21 08:47:40,218 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] [2022-07-21 08:47:40,219 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[49487,49500] [2022-07-21 08:47:40,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:47:40,225 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:47:40,238 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-21 08:47:40,254 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] [2022-07-21 08:47:40,261 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] [2022-07-21 08:47:40,269 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] [2022-07-21 08:47:40,270 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] [2022-07-21 08:47:40,274 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] [2022-07-21 08:47:40,275 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] [2022-07-21 08:47:40,280 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] [2022-07-21 08:47:40,280 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] [2022-07-21 08:47:40,282 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] [2022-07-21 08:47:40,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:47:40,335 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:47:40,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:40 WrapperNode [2022-07-21 08:47:40,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:47:40,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:47:40,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:47:40,337 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:47:40,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:40" (1/1) ... [2022-07-21 08:47:40,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:40" (1/1) ... [2022-07-21 08:47:40,377 INFO L137 Inliner]: procedures = 278, calls = 101, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 405 [2022-07-21 08:47:40,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:47:40,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:47:40,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:47:40,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:47:40,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:40" (1/1) ... [2022-07-21 08:47:40,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:40" (1/1) ... [2022-07-21 08:47:40,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:40" (1/1) ... [2022-07-21 08:47:40,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:40" (1/1) ... [2022-07-21 08:47:40,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:40" (1/1) ... [2022-07-21 08:47:40,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:40" (1/1) ... [2022-07-21 08:47:40,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:40" (1/1) ... [2022-07-21 08:47:40,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:47:40,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:47:40,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:47:40,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:47:40,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:40" (1/1) ... [2022-07-21 08:47:40,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:47:40,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:47:40,428 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) [2022-07-21 08:47:40,433 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 [2022-07-21 08:47:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-07-21 08:47:40,453 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-07-21 08:47:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:47:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 08:47:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:47:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:47:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:47:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 08:47:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:47:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 08:47:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:47:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:47:40,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:47:40,456 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:47:40,558 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:47:40,571 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:47:41,181 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:47:41,202 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:47:41,203 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-21 08:47:41,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:47:41 BoogieIcfgContainer [2022-07-21 08:47:41,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:47:41,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:47:41,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:47:41,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:47:41,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:47:39" (1/3) ... [2022-07-21 08:47:41,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25104c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:47:41, skipping insertion in model container [2022-07-21 08:47:41,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:40" (2/3) ... [2022-07-21 08:47:41,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25104c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:47:41, skipping insertion in model container [2022-07-21 08:47:41,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:47:41" (3/3) ... [2022-07-21 08:47:41,212 INFO L111 eAbstractionObserver]: Analyzing ICFG divinefifo_1w1r.i [2022-07-21 08:47:41,217 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:47:41,224 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:47:41,224 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-07-21 08:47:41,224 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:47:41,289 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-21 08:47:41,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 467 places, 495 transitions, 998 flow [2022-07-21 08:47:41,419 INFO L129 PetriNetUnfolder]: 32/494 cut-off events. [2022-07-21 08:47:41,420 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-21 08:47:41,442 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. [2022-07-21 08:47:41,443 INFO L82 GeneralOperation]: Start removeDead. Operand has 467 places, 495 transitions, 998 flow [2022-07-21 08:47:41,450 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 448 places, 475 transitions, 956 flow [2022-07-21 08:47:41,456 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:47:41,461 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@1941100, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@141ed14d [2022-07-21 08:47:41,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-07-21 08:47:41,469 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2022-07-21 08:47:41,469 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:47:41,469 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:41,470 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] [2022-07-21 08:47:41,470 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)] === [2022-07-21 08:47:41,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:41,474 INFO L85 PathProgramCache]: Analyzing trace with hash 894712245, now seen corresponding path program 1 times [2022-07-21 08:47:41,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:41,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585626531] [2022-07-21 08:47:41,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:41,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:41,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:41,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:41,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585626531] [2022-07-21 08:47:41,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585626531] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:41,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:41,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 08:47:41,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80882641] [2022-07-21 08:47:41,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:41,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 08:47:41,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:41,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 08:47:41,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-21 08:47:41,999 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 495 [2022-07-21 08:47:42,005 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) [2022-07-21 08:47:42,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:42,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 495 [2022-07-21 08:47:42,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:43,416 INFO L129 PetriNetUnfolder]: 1940/7030 cut-off events. [2022-07-21 08:47:43,417 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-21 08:47:43,427 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. [2022-07-21 08:47:43,446 INFO L132 encePairwiseOnDemand]: 456/495 looper letters, 164 selfloop transitions, 24 changer transitions 0/475 dead transitions. [2022-07-21 08:47:43,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 475 transitions, 1332 flow [2022-07-21 08:47:43,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:47:43,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 08:47:43,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4460 transitions. [2022-07-21 08:47:43,464 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6435786435786436 [2022-07-21 08:47:43,465 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4460 transitions. [2022-07-21 08:47:43,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4460 transitions. [2022-07-21 08:47:43,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:43,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4460 transitions. [2022-07-21 08:47:43,479 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) [2022-07-21 08:47:43,492 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) [2022-07-21 08:47:43,495 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) [2022-07-21 08:47:43,496 INFO L186 Difference]: Start difference. First operand has 448 places, 475 transitions, 956 flow. Second operand 14 states and 4460 transitions. [2022-07-21 08:47:43,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 475 transitions, 1332 flow [2022-07-21 08:47:43,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 475 transitions, 1328 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:47:43,509 INFO L242 Difference]: Finished difference. Result has 459 places, 460 transitions, 970 flow [2022-07-21 08:47:43,511 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} [2022-07-21 08:47:43,514 INFO L279 CegarLoopForPetriNet]: 448 programPoint places, 11 predicate places. [2022-07-21 08:47:43,515 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 460 transitions, 970 flow [2022-07-21 08:47:43,517 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) [2022-07-21 08:47:43,517 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:43,517 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] [2022-07-21 08:47:43,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:47:43,518 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)] === [2022-07-21 08:47:43,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:43,518 INFO L85 PathProgramCache]: Analyzing trace with hash 775770239, now seen corresponding path program 1 times [2022-07-21 08:47:43,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:43,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338411341] [2022-07-21 08:47:43,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:43,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:43,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:43,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:43,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338411341] [2022-07-21 08:47:43,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338411341] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:43,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:43,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-21 08:47:43,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422725741] [2022-07-21 08:47:43,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:43,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 08:47:43,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:43,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 08:47:43,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2022-07-21 08:47:43,996 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 495 [2022-07-21 08:47:44,002 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) [2022-07-21 08:47:44,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:44,002 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 495 [2022-07-21 08:47:44,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:47,974 INFO L129 PetriNetUnfolder]: 4650/14396 cut-off events. [2022-07-21 08:47:47,975 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-07-21 08:47:48,004 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. [2022-07-21 08:47:48,055 INFO L132 encePairwiseOnDemand]: 450/495 looper letters, 383 selfloop transitions, 54 changer transitions 0/680 dead transitions. [2022-07-21 08:47:48,055 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 680 transitions, 2305 flow [2022-07-21 08:47:48,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-21 08:47:48,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-21 08:47:48,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 8694 transitions. [2022-07-21 08:47:48,068 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5488636363636363 [2022-07-21 08:47:48,068 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 8694 transitions. [2022-07-21 08:47:48,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 8694 transitions. [2022-07-21 08:47:48,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:48,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 8694 transitions. [2022-07-21 08:47:48,084 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) [2022-07-21 08:47:48,105 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) [2022-07-21 08:47:48,111 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) [2022-07-21 08:47:48,111 INFO L186 Difference]: Start difference. First operand has 459 places, 460 transitions, 970 flow. Second operand 32 states and 8694 transitions. [2022-07-21 08:47:48,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 680 transitions, 2305 flow [2022-07-21 08:47:48,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 680 transitions, 2237 flow, removed 0 selfloop flow, removed 13 redundant places. [2022-07-21 08:47:48,130 INFO L242 Difference]: Finished difference. Result has 477 places, 475 transitions, 1095 flow [2022-07-21 08:47:48,131 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} [2022-07-21 08:47:48,131 INFO L279 CegarLoopForPetriNet]: 448 programPoint places, 29 predicate places. [2022-07-21 08:47:48,132 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 475 transitions, 1095 flow [2022-07-21 08:47:48,133 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) [2022-07-21 08:47:48,134 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:48,134 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] [2022-07-21 08:47:48,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:47:48,134 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)] === [2022-07-21 08:47:48,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:48,135 INFO L85 PathProgramCache]: Analyzing trace with hash -2057725171, now seen corresponding path program 1 times [2022-07-21 08:47:48,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:48,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632182937] [2022-07-21 08:47:48,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:48,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:48,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:48,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:48,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632182937] [2022-07-21 08:47:48,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632182937] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:48,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:48,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:47:48,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952713221] [2022-07-21 08:47:48,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:48,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:47:48,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:48,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:47:48,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:47:48,243 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 467 out of 495 [2022-07-21 08:47:48,245 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) [2022-07-21 08:47:48,245 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:48,245 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 467 of 495 [2022-07-21 08:47:48,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:48,337 INFO L129 PetriNetUnfolder]: 29/878 cut-off events. [2022-07-21 08:47:48,337 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-07-21 08:47:48,343 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. [2022-07-21 08:47:48,346 INFO L132 encePairwiseOnDemand]: 487/495 looper letters, 8 selfloop transitions, 7 changer transitions 0/476 dead transitions. [2022-07-21 08:47:48,346 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 476 transitions, 1124 flow [2022-07-21 08:47:48,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:47:48,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 08:47:48,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2351 transitions. [2022-07-21 08:47:48,350 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9498989898989899 [2022-07-21 08:47:48,350 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2351 transitions. [2022-07-21 08:47:48,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2351 transitions. [2022-07-21 08:47:48,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:48,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2351 transitions. [2022-07-21 08:47:48,354 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) [2022-07-21 08:47:48,357 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) [2022-07-21 08:47:48,357 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) [2022-07-21 08:47:48,358 INFO L186 Difference]: Start difference. First operand has 477 places, 475 transitions, 1095 flow. Second operand 5 states and 2351 transitions. [2022-07-21 08:47:48,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 476 transitions, 1124 flow [2022-07-21 08:47:48,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 476 transitions, 1069 flow, removed 1 selfloop flow, removed 26 redundant places. [2022-07-21 08:47:48,365 INFO L242 Difference]: Finished difference. Result has 457 places, 475 transitions, 1061 flow [2022-07-21 08:47:48,366 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} [2022-07-21 08:47:48,366 INFO L279 CegarLoopForPetriNet]: 448 programPoint places, 9 predicate places. [2022-07-21 08:47:48,366 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 475 transitions, 1061 flow [2022-07-21 08:47:48,367 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) [2022-07-21 08:47:48,368 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:48,368 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] [2022-07-21 08:47:48,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:47:48,368 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)] === [2022-07-21 08:47:48,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:48,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1711191470, now seen corresponding path program 1 times [2022-07-21 08:47:48,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:48,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698579352] [2022-07-21 08:47:48,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:48,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:48,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:48,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:48,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698579352] [2022-07-21 08:47:48,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698579352] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:48,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:48,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:47:48,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941011013] [2022-07-21 08:47:48,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:48,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:47:48,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:48,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:47:48,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:47:48,408 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 470 out of 495 [2022-07-21 08:47:48,409 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) [2022-07-21 08:47:48,409 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:48,409 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 470 of 495 [2022-07-21 08:47:48,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:48,525 INFO L129 PetriNetUnfolder]: 38/1125 cut-off events. [2022-07-21 08:47:48,525 INFO L130 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-07-21 08:47:48,532 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. [2022-07-21 08:47:48,535 INFO L132 encePairwiseOnDemand]: 492/495 looper letters, 13 selfloop transitions, 2 changer transitions 0/479 dead transitions. [2022-07-21 08:47:48,535 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 479 transitions, 1095 flow [2022-07-21 08:47:48,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:47:48,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:47:48,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1426 transitions. [2022-07-21 08:47:48,538 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9602693602693603 [2022-07-21 08:47:48,538 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1426 transitions. [2022-07-21 08:47:48,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1426 transitions. [2022-07-21 08:47:48,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:48,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1426 transitions. [2022-07-21 08:47:48,543 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) [2022-07-21 08:47:48,545 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) [2022-07-21 08:47:48,545 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) [2022-07-21 08:47:48,545 INFO L186 Difference]: Start difference. First operand has 457 places, 475 transitions, 1061 flow. Second operand 3 states and 1426 transitions. [2022-07-21 08:47:48,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 479 transitions, 1095 flow [2022-07-21 08:47:48,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 479 transitions, 1086 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-07-21 08:47:48,553 INFO L242 Difference]: Finished difference. Result has 458 places, 475 transitions, 1058 flow [2022-07-21 08:47:48,554 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} [2022-07-21 08:47:48,555 INFO L279 CegarLoopForPetriNet]: 448 programPoint places, 10 predicate places. [2022-07-21 08:47:48,555 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 475 transitions, 1058 flow [2022-07-21 08:47:48,556 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) [2022-07-21 08:47:48,556 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:48,556 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] [2022-07-21 08:47:48,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:47:48,556 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)] === [2022-07-21 08:47:48,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:48,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1378553318, now seen corresponding path program 1 times [2022-07-21 08:47:48,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:48,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571228019] [2022-07-21 08:47:48,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:48,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:48,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:48,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:48,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571228019] [2022-07-21 08:47:48,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571228019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:48,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:48,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-21 08:47:48,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489235928] [2022-07-21 08:47:48,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:48,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 08:47:48,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:48,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 08:47:48,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:47:48,914 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 495 [2022-07-21 08:47:48,917 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) [2022-07-21 08:47:48,917 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:48,917 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 495 [2022-07-21 08:47:48,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:52,802 INFO L129 PetriNetUnfolder]: 5804/22022 cut-off events. [2022-07-21 08:47:52,802 INFO L130 PetriNetUnfolder]: For 413/413 co-relation queries the response was YES. [2022-07-21 08:47:52,854 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. [2022-07-21 08:47:52,909 INFO L132 encePairwiseOnDemand]: 463/495 looper letters, 343 selfloop transitions, 44 changer transitions 0/707 dead transitions. [2022-07-21 08:47:52,909 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 707 transitions, 2305 flow [2022-07-21 08:47:52,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 08:47:52,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 08:47:52,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 7537 transitions. [2022-07-21 08:47:52,923 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6921028466483012 [2022-07-21 08:47:52,923 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 7537 transitions. [2022-07-21 08:47:52,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 7537 transitions. [2022-07-21 08:47:52,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:52,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 7537 transitions. [2022-07-21 08:47:52,936 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) [2022-07-21 08:47:52,949 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) [2022-07-21 08:47:52,951 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) [2022-07-21 08:47:52,952 INFO L186 Difference]: Start difference. First operand has 458 places, 475 transitions, 1058 flow. Second operand 22 states and 7537 transitions. [2022-07-21 08:47:52,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 707 transitions, 2305 flow [2022-07-21 08:47:52,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 707 transitions, 2303 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:47:52,965 INFO L242 Difference]: Finished difference. Result has 486 places, 507 transitions, 1296 flow [2022-07-21 08:47:52,966 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} [2022-07-21 08:47:52,968 INFO L279 CegarLoopForPetriNet]: 448 programPoint places, 38 predicate places. [2022-07-21 08:47:52,969 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 507 transitions, 1296 flow [2022-07-21 08:47:52,970 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) [2022-07-21 08:47:52,970 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:52,970 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] [2022-07-21 08:47:52,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:47:52,972 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)] === [2022-07-21 08:47:52,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:52,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1950405236, now seen corresponding path program 1 times [2022-07-21 08:47:52,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:52,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237357049] [2022-07-21 08:47:52,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:52,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:53,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:53,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:53,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237357049] [2022-07-21 08:47:53,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237357049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:53,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:53,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:47:53,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241829737] [2022-07-21 08:47:53,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:53,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:47:53,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:53,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:47:53,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:47:53,092 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 495 [2022-07-21 08:47:53,093 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) [2022-07-21 08:47:53,093 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:53,093 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 495 [2022-07-21 08:47:53,093 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:53,856 INFO L129 PetriNetUnfolder]: 275/5422 cut-off events. [2022-07-21 08:47:53,857 INFO L130 PetriNetUnfolder]: For 202/215 co-relation queries the response was YES. [2022-07-21 08:47:53,887 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. [2022-07-21 08:47:53,898 INFO L132 encePairwiseOnDemand]: 472/495 looper letters, 76 selfloop transitions, 22 changer transitions 0/531 dead transitions. [2022-07-21 08:47:53,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 531 transitions, 1545 flow [2022-07-21 08:47:53,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:47:53,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 08:47:53,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2604 transitions. [2022-07-21 08:47:53,902 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8767676767676768 [2022-07-21 08:47:53,902 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2604 transitions. [2022-07-21 08:47:53,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2604 transitions. [2022-07-21 08:47:53,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:53,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2604 transitions. [2022-07-21 08:47:53,907 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) [2022-07-21 08:47:53,909 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) [2022-07-21 08:47:53,910 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) [2022-07-21 08:47:53,910 INFO L186 Difference]: Start difference. First operand has 486 places, 507 transitions, 1296 flow. Second operand 6 states and 2604 transitions. [2022-07-21 08:47:53,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 531 transitions, 1545 flow [2022-07-21 08:47:53,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 531 transitions, 1523 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-07-21 08:47:53,919 INFO L242 Difference]: Finished difference. Result has 484 places, 524 transitions, 1424 flow [2022-07-21 08:47:53,919 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} [2022-07-21 08:47:53,920 INFO L279 CegarLoopForPetriNet]: 448 programPoint places, 36 predicate places. [2022-07-21 08:47:53,920 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 524 transitions, 1424 flow [2022-07-21 08:47:53,921 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) [2022-07-21 08:47:53,921 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:53,921 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] [2022-07-21 08:47:53,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:47:53,921 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)] === [2022-07-21 08:47:53,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:53,922 INFO L85 PathProgramCache]: Analyzing trace with hash 675793813, now seen corresponding path program 1 times [2022-07-21 08:47:53,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:53,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728303772] [2022-07-21 08:47:53,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:53,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:55,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:55,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:55,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728303772] [2022-07-21 08:47:55,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728303772] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:55,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:55,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-07-21 08:47:55,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631799359] [2022-07-21 08:47:55,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:55,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-07-21 08:47:55,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:55,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-07-21 08:47:55,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1342, Unknown=0, NotChecked=0, Total=1482 [2022-07-21 08:47:55,378 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 495 [2022-07-21 08:47:55,394 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) [2022-07-21 08:47:55,394 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:55,394 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 495 [2022-07-21 08:47:55,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:48:25,635 INFO L129 PetriNetUnfolder]: 25138/81198 cut-off events. [2022-07-21 08:48:25,636 INFO L130 PetriNetUnfolder]: For 11415/11427 co-relation queries the response was YES. [2022-07-21 08:48:26,129 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. [2022-07-21 08:48:26,335 INFO L132 encePairwiseOnDemand]: 424/495 looper letters, 1639 selfloop transitions, 312 changer transitions 0/2201 dead transitions. [2022-07-21 08:48:26,335 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 2201 transitions, 10567 flow [2022-07-21 08:48:26,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-07-21 08:48:26,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2022-07-21 08:48:26,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 25539 transitions. [2022-07-21 08:48:26,366 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5608036890645586 [2022-07-21 08:48:26,366 INFO L72 ComplementDD]: Start complementDD. Operand 92 states and 25539 transitions. [2022-07-21 08:48:26,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 92 states and 25539 transitions. [2022-07-21 08:48:26,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:48:26,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 92 states and 25539 transitions. [2022-07-21 08:48:26,404 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) [2022-07-21 08:48:26,452 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) [2022-07-21 08:48:26,469 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) [2022-07-21 08:48:26,469 INFO L186 Difference]: Start difference. First operand has 484 places, 524 transitions, 1424 flow. Second operand 92 states and 25539 transitions. [2022-07-21 08:48:26,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 2201 transitions, 10567 flow [2022-07-21 08:48:26,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 2201 transitions, 10508 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-21 08:48:26,731 INFO L242 Difference]: Finished difference. Result has 628 places, 810 transitions, 3908 flow [2022-07-21 08:48:26,732 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} [2022-07-21 08:48:26,732 INFO L279 CegarLoopForPetriNet]: 448 programPoint places, 180 predicate places. [2022-07-21 08:48:26,733 INFO L495 AbstractCegarLoop]: Abstraction has has 628 places, 810 transitions, 3908 flow [2022-07-21 08:48:26,735 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) [2022-07-21 08:48:26,735 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:48:26,735 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] [2022-07-21 08:48:26,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:48:26,736 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)] === [2022-07-21 08:48:26,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:48:26,737 INFO L85 PathProgramCache]: Analyzing trace with hash 31416169, now seen corresponding path program 2 times [2022-07-21 08:48:26,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:48:26,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581002885] [2022-07-21 08:48:26,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:48:26,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:48:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:48:27,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:48:27,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:48:27,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581002885] [2022-07-21 08:48:27,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581002885] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:48:27,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:48:27,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-21 08:48:27,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584514079] [2022-07-21 08:48:27,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:48:27,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 08:48:27,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:48:27,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 08:48:27,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2022-07-21 08:48:27,387 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 495 [2022-07-21 08:48:27,391 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) [2022-07-21 08:48:27,392 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:48:27,392 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 495 [2022-07-21 08:48:27,392 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:48:53,430 INFO L129 PetriNetUnfolder]: 23538/86443 cut-off events. [2022-07-21 08:48:53,442 INFO L130 PetriNetUnfolder]: For 114746/115092 co-relation queries the response was YES. [2022-07-21 08:48:55,160 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. [2022-07-21 08:48:55,379 INFO L132 encePairwiseOnDemand]: 416/495 looper letters, 1373 selfloop transitions, 528 changer transitions 0/2217 dead transitions. [2022-07-21 08:48:55,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 695 places, 2217 transitions, 14068 flow [2022-07-21 08:48:55,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-07-21 08:48:55,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2022-07-21 08:48:55,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 21040 transitions. [2022-07-21 08:48:55,393 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6160152247108769 [2022-07-21 08:48:55,394 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 21040 transitions. [2022-07-21 08:48:55,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 21040 transitions. [2022-07-21 08:48:55,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:48:55,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 21040 transitions. [2022-07-21 08:48:55,416 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) [2022-07-21 08:48:55,436 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) [2022-07-21 08:48:55,438 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) [2022-07-21 08:48:55,439 INFO L186 Difference]: Start difference. First operand has 628 places, 810 transitions, 3908 flow. Second operand 69 states and 21040 transitions. [2022-07-21 08:48:55,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 695 places, 2217 transitions, 14068 flow [2022-07-21 08:48:56,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 672 places, 2217 transitions, 13878 flow, removed 72 selfloop flow, removed 23 redundant places. [2022-07-21 08:48:56,015 INFO L242 Difference]: Finished difference. Result has 714 places, 1223 transitions, 8142 flow [2022-07-21 08:48:56,016 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} [2022-07-21 08:48:56,017 INFO L279 CegarLoopForPetriNet]: 448 programPoint places, 266 predicate places. [2022-07-21 08:48:56,017 INFO L495 AbstractCegarLoop]: Abstraction has has 714 places, 1223 transitions, 8142 flow [2022-07-21 08:48:56,018 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) [2022-07-21 08:48:56,018 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:48:56,018 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] [2022-07-21 08:48:56,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:48:56,018 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)] === [2022-07-21 08:48:56,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:48:56,019 INFO L85 PathProgramCache]: Analyzing trace with hash 602997045, now seen corresponding path program 3 times [2022-07-21 08:48:56,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:48:56,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028648616] [2022-07-21 08:48:56,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:48:56,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:48:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:48:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:48:57,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:48:57,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028648616] [2022-07-21 08:48:57,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028648616] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:48:57,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:48:57,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-07-21 08:48:57,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748218884] [2022-07-21 08:48:57,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:48:57,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-21 08:48:57,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:48:57,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-21 08:48:57,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1206, Unknown=0, NotChecked=0, Total=1332 [2022-07-21 08:48:57,306 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 495 [2022-07-21 08:48:57,309 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) [2022-07-21 08:48:57,310 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:48:57,310 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 495 [2022-07-21 08:48:57,310 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand