./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 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/bin/uautomizer-Dbtcem3rbc --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:20:58,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:20:58,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:20:58,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:20:58,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:20:58,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:20:58,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:20:58,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:20:58,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:20:58,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:20:58,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:20:58,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:20:58,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:20:58,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:20:58,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:20:58,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:20:58,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:20:58,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:20:58,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:20:58,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:20:58,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:20:58,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:20:58,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:20:58,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:20:58,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:20:58,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:20:58,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:20:58,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:20:58,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:20:58,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:20:58,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:20:58,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:20:58,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:20:58,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:20:58,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:20:58,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:20:58,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:20:58,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:20:58,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:20:58,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:20:58,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:20:58,316 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:20:58,342 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:20:58,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:20:58,343 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:20:58,344 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:20:58,344 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:20:58,345 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:20:58,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:20:58,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:20:58,346 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:20:58,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:20:58,347 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:20:58,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:20:58,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:20:58,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:20:58,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:20:58,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:20:58,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:20:58,348 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:20:58,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:20:58,349 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:20:58,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:20:58,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:20:58,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:20:58,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:20:58,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:20:58,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:20:58,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:20:58,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:20:58,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:20:58,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:20:58,352 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:20:58,352 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:20:58,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:20:58,352 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43c4691e367ff0d8a9949fa90f15eddbc091ab75ed1546de74dafe83c2376639 [2022-11-02 20:20:58,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:20:58,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:20:58,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:20:58,707 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:20:58,708 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:20:58,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i [2022-11-02 20:20:58,801 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/bin/uautomizer-Dbtcem3rbc/data/8098d7e17/f7751d4133bc48fca3b7377f10ad73ea/FLAGb29624146 [2022-11-02 20:20:59,491 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:20:59,491 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i [2022-11-02 20:20:59,509 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/bin/uautomizer-Dbtcem3rbc/data/8098d7e17/f7751d4133bc48fca3b7377f10ad73ea/FLAGb29624146 [2022-11-02 20:20:59,761 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/bin/uautomizer-Dbtcem3rbc/data/8098d7e17/f7751d4133bc48fca3b7377f10ad73ea [2022-11-02 20:20:59,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:20:59,770 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:20:59,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:20:59,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:20:59,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:20:59,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:20:59" (1/1) ... [2022-11-02 20:20:59,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51e20a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:59, skipping insertion in model container [2022-11-02 20:20:59,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:20:59" (1/1) ... [2022-11-02 20:20:59,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:20:59,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:21:00,051 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-02 20:21:00,557 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[47275,47288] [2022-11-02 20:21:00,567 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[47463,47476] [2022-11-02 20:21:00,595 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48230,48243] [2022-11-02 20:21:00,598 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48344,48357] [2022-11-02 20:21:00,613 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48781,48794] [2022-11-02 20:21:00,616 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48837,48850] [2022-11-02 20:21:00,636 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49349,49362] [2022-11-02 20:21:00,638 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49408,49421] [2022-11-02 20:21:00,641 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49487,49500] [2022-11-02 20:21:00,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:21:00,654 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:21:00,677 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-02 20:21:00,717 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[47275,47288] [2022-11-02 20:21:00,722 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[47463,47476] [2022-11-02 20:21:00,732 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48230,48243] [2022-11-02 20:21:00,734 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48344,48357] [2022-11-02 20:21:00,743 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48781,48794] [2022-11-02 20:21:00,744 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48837,48850] [2022-11-02 20:21:00,754 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49349,49362] [2022-11-02 20:21:00,755 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49408,49421] [2022-11-02 20:21:00,760 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49487,49500] [2022-11-02 20:21:00,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:21:00,816 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:21:00,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:21:00 WrapperNode [2022-11-02 20:21:00,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:21:00,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:21:00,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:21:00,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:21:00,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:21:00" (1/1) ... [2022-11-02 20:21:00,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:21:00" (1/1) ... [2022-11-02 20:21:00,914 INFO L138 Inliner]: procedures = 278, calls = 101, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 405 [2022-11-02 20:21:00,914 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:21:00,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:21:00,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:21:00,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:21:00,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:21:00" (1/1) ... [2022-11-02 20:21:00,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:21:00" (1/1) ... [2022-11-02 20:21:00,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:21:00" (1/1) ... [2022-11-02 20:21:00,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:21:00" (1/1) ... [2022-11-02 20:21:00,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:21:00" (1/1) ... [2022-11-02 20:21:00,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:21:00" (1/1) ... [2022-11-02 20:21:00,999 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:21:00" (1/1) ... [2022-11-02 20:21:01,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:21:00" (1/1) ... [2022-11-02 20:21:01,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:21:01,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:21:01,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:21:01,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:21:01,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:21:00" (1/1) ... [2022-11-02 20:21:01,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:21:01,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:21:01,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:21:01,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58fe6763-b082-43d6-bf51-dbdba1751c96/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:21:01,090 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-11-02 20:21:01,090 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-11-02 20:21:01,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:21:01,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:21:01,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:21:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:21:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:21:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:21:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:21:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:21:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:21:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:21:01,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:21:01,093 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:21:01,295 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:21:01,297 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:21:02,356 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:21:02,368 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:21:02,368 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-02 20:21:02,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:21:02 BoogieIcfgContainer [2022-11-02 20:21:02,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:21:02,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:21:02,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:21:02,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:21:02,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:20:59" (1/3) ... [2022-11-02 20:21:02,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46aeb93c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:21:02, skipping insertion in model container [2022-11-02 20:21:02,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:21:00" (2/3) ... [2022-11-02 20:21:02,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46aeb93c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:21:02, skipping insertion in model container [2022-11-02 20:21:02,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:21:02" (3/3) ... [2022-11-02 20:21:02,384 INFO L112 eAbstractionObserver]: Analyzing ICFG divinefifo_1w1r.i [2022-11-02 20:21:02,394 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:21:02,406 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:21:02,406 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-02 20:21:02,407 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:21:02,502 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-02 20:21:02,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 467 places, 495 transitions, 998 flow [2022-11-02 20:21:02,892 INFO L130 PetriNetUnfolder]: 32/494 cut-off events. [2022-11-02 20:21:02,892 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:21:02,909 INFO L83 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. [2022-11-02 20:21:02,909 INFO L82 GeneralOperation]: Start removeDead. Operand has 467 places, 495 transitions, 998 flow [2022-11-02 20:21:02,923 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 448 places, 475 transitions, 956 flow [2022-11-02 20:21:02,946 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:21:02,955 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@185bb47d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:21:02,955 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-02 20:21:02,967 INFO L130 PetriNetUnfolder]: 2/70 cut-off events. [2022-11-02 20:21:02,967 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:21:02,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:21:02,968 INFO L208 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] [2022-11-02 20:21:02,969 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)] === [2022-11-02 20:21:02,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:02,976 INFO L85 PathProgramCache]: Analyzing trace with hash 894712245, now seen corresponding path program 1 times [2022-11-02 20:21:02,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:21:02,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302616650] [2022-11-02 20:21:02,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:02,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:21:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:04,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:04,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:21:04,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302616650] [2022-11-02 20:21:04,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302616650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:04,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:04,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 20:21:04,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360004433] [2022-11-02 20:21:04,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:04,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:21:04,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:21:04,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:21:04,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:21:04,729 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 495 [2022-11-02 20:21:04,743 INFO L100 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) [2022-11-02 20:21:04,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:21:04,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 495 [2022-11-02 20:21:04,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:21:07,514 INFO L130 PetriNetUnfolder]: 1940/7030 cut-off events. [2022-11-02 20:21:07,514 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-02 20:21:07,529 INFO L83 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 59273 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. [2022-11-02 20:21:07,555 INFO L137 encePairwiseOnDemand]: 456/495 looper letters, 164 selfloop transitions, 24 changer transitions 0/475 dead transitions. [2022-11-02 20:21:07,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 475 transitions, 1332 flow [2022-11-02 20:21:07,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:21:07,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-02 20:21:07,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4460 transitions. [2022-11-02 20:21:07,585 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6435786435786436 [2022-11-02 20:21:07,586 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4460 transitions. [2022-11-02 20:21:07,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4460 transitions. [2022-11-02 20:21:07,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:21:07,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4460 transitions. [2022-11-02 20:21:07,610 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) [2022-11-02 20:21:07,632 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) [2022-11-02 20:21:07,637 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) [2022-11-02 20:21:07,640 INFO L175 Difference]: Start difference. First operand has 448 places, 475 transitions, 956 flow. Second operand 14 states and 4460 transitions. [2022-11-02 20:21:07,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 475 transitions, 1332 flow [2022-11-02 20:21:07,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 475 transitions, 1328 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:21:07,697 INFO L231 Difference]: Finished difference. Result has 459 places, 460 transitions, 970 flow [2022-11-02 20:21:07,700 INFO L270 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} [2022-11-02 20:21:07,704 INFO L287 CegarLoopForPetriNet]: 448 programPoint places, 11 predicate places. [2022-11-02 20:21:07,704 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 460 transitions, 970 flow [2022-11-02 20:21:07,707 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) [2022-11-02 20:21:07,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:21:07,711 INFO L208 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] [2022-11-02 20:21:07,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:21:07,712 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)] === [2022-11-02 20:21:07,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:07,712 INFO L85 PathProgramCache]: Analyzing trace with hash 775770239, now seen corresponding path program 1 times [2022-11-02 20:21:07,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:21:07,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325813670] [2022-11-02 20:21:07,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:07,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:21:07,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:09,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:09,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:21:09,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325813670] [2022-11-02 20:21:09,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325813670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:09,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:09,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-02 20:21:09,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652834257] [2022-11-02 20:21:09,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:09,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 20:21:09,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:21:09,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 20:21:09,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:21:09,700 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 495 [2022-11-02 20:21:09,707 INFO L100 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) [2022-11-02 20:21:09,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:21:09,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 495 [2022-11-02 20:21:09,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:21:16,835 INFO L130 PetriNetUnfolder]: 4650/14396 cut-off events. [2022-11-02 20:21:16,835 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-02 20:21:16,867 INFO L83 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 129479 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. [2022-11-02 20:21:16,917 INFO L137 encePairwiseOnDemand]: 450/495 looper letters, 383 selfloop transitions, 54 changer transitions 0/680 dead transitions. [2022-11-02 20:21:16,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 680 transitions, 2305 flow [2022-11-02 20:21:16,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 20:21:16,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-02 20:21:16,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 8694 transitions. [2022-11-02 20:21:16,937 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5488636363636363 [2022-11-02 20:21:16,937 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 8694 transitions. [2022-11-02 20:21:16,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 8694 transitions. [2022-11-02 20:21:16,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:21:16,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 8694 transitions. [2022-11-02 20:21:16,961 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) [2022-11-02 20:21:16,987 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) [2022-11-02 20:21:16,994 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) [2022-11-02 20:21:16,994 INFO L175 Difference]: Start difference. First operand has 459 places, 460 transitions, 970 flow. Second operand 32 states and 8694 transitions. [2022-11-02 20:21:16,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 680 transitions, 2305 flow [2022-11-02 20:21:17,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 680 transitions, 2237 flow, removed 0 selfloop flow, removed 13 redundant places. [2022-11-02 20:21:17,020 INFO L231 Difference]: Finished difference. Result has 477 places, 475 transitions, 1095 flow [2022-11-02 20:21:17,021 INFO L270 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} [2022-11-02 20:21:17,021 INFO L287 CegarLoopForPetriNet]: 448 programPoint places, 29 predicate places. [2022-11-02 20:21:17,022 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 475 transitions, 1095 flow [2022-11-02 20:21:17,024 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) [2022-11-02 20:21:17,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:21:17,025 INFO L208 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] [2022-11-02 20:21:17,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:21:17,025 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)] === [2022-11-02 20:21:17,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:17,026 INFO L85 PathProgramCache]: Analyzing trace with hash -2057725171, now seen corresponding path program 1 times [2022-11-02 20:21:17,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:21:17,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851975462] [2022-11-02 20:21:17,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:17,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:21:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:17,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:17,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:21:17,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851975462] [2022-11-02 20:21:17,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851975462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:17,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:17,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:21:17,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214657218] [2022-11-02 20:21:17,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:17,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:21:17,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:21:17,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:21:17,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:21:17,223 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 467 out of 495 [2022-11-02 20:21:17,240 INFO L100 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) [2022-11-02 20:21:17,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:21:17,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 467 of 495 [2022-11-02 20:21:17,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:21:17,438 INFO L130 PetriNetUnfolder]: 29/878 cut-off events. [2022-11-02 20:21:17,438 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-02 20:21:17,447 INFO L83 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 2201 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. [2022-11-02 20:21:17,457 INFO L137 encePairwiseOnDemand]: 487/495 looper letters, 8 selfloop transitions, 7 changer transitions 0/476 dead transitions. [2022-11-02 20:21:17,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 476 transitions, 1124 flow [2022-11-02 20:21:17,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:21:17,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:21:17,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2351 transitions. [2022-11-02 20:21:17,462 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9498989898989899 [2022-11-02 20:21:17,462 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2351 transitions. [2022-11-02 20:21:17,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2351 transitions. [2022-11-02 20:21:17,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:21:17,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2351 transitions. [2022-11-02 20:21:17,469 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) [2022-11-02 20:21:17,473 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) [2022-11-02 20:21:17,476 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) [2022-11-02 20:21:17,476 INFO L175 Difference]: Start difference. First operand has 477 places, 475 transitions, 1095 flow. Second operand 5 states and 2351 transitions. [2022-11-02 20:21:17,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 476 transitions, 1124 flow [2022-11-02 20:21:17,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 476 transitions, 1069 flow, removed 1 selfloop flow, removed 26 redundant places. [2022-11-02 20:21:17,492 INFO L231 Difference]: Finished difference. Result has 457 places, 475 transitions, 1061 flow [2022-11-02 20:21:17,493 INFO L270 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} [2022-11-02 20:21:17,495 INFO L287 CegarLoopForPetriNet]: 448 programPoint places, 9 predicate places. [2022-11-02 20:21:17,495 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 475 transitions, 1061 flow [2022-11-02 20:21:17,496 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) [2022-11-02 20:21:17,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:21:17,497 INFO L208 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] [2022-11-02 20:21:17,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:21:17,498 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)] === [2022-11-02 20:21:17,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:17,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1711191470, now seen corresponding path program 1 times [2022-11-02 20:21:17,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:21:17,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135656220] [2022-11-02 20:21:17,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:17,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:21:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:17,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:17,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:21:17,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135656220] [2022-11-02 20:21:17,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135656220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:17,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:17,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:21:17,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419116514] [2022-11-02 20:21:17,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:17,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:21:17,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:21:17,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:21:17,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:21:17,612 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 470 out of 495 [2022-11-02 20:21:17,617 INFO L100 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) [2022-11-02 20:21:17,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:21:17,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 470 of 495 [2022-11-02 20:21:17,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:21:18,006 INFO L130 PetriNetUnfolder]: 38/1125 cut-off events. [2022-11-02 20:21:18,007 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-02 20:21:18,019 INFO L83 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 9. Compared 3112 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. [2022-11-02 20:21:18,022 INFO L137 encePairwiseOnDemand]: 492/495 looper letters, 13 selfloop transitions, 2 changer transitions 0/479 dead transitions. [2022-11-02 20:21:18,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 479 transitions, 1095 flow [2022-11-02 20:21:18,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:21:18,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:21:18,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1426 transitions. [2022-11-02 20:21:18,027 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9602693602693603 [2022-11-02 20:21:18,027 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1426 transitions. [2022-11-02 20:21:18,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1426 transitions. [2022-11-02 20:21:18,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:21:18,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1426 transitions. [2022-11-02 20:21:18,031 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) [2022-11-02 20:21:18,034 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) [2022-11-02 20:21:18,034 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) [2022-11-02 20:21:18,034 INFO L175 Difference]: Start difference. First operand has 457 places, 475 transitions, 1061 flow. Second operand 3 states and 1426 transitions. [2022-11-02 20:21:18,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 479 transitions, 1095 flow [2022-11-02 20:21:18,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 479 transitions, 1086 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-02 20:21:18,046 INFO L231 Difference]: Finished difference. Result has 458 places, 475 transitions, 1058 flow [2022-11-02 20:21:18,047 INFO L270 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} [2022-11-02 20:21:18,048 INFO L287 CegarLoopForPetriNet]: 448 programPoint places, 10 predicate places. [2022-11-02 20:21:18,048 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 475 transitions, 1058 flow [2022-11-02 20:21:18,049 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) [2022-11-02 20:21:18,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:21:18,049 INFO L208 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] [2022-11-02 20:21:18,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:21:18,050 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)] === [2022-11-02 20:21:18,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:18,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1378553318, now seen corresponding path program 1 times [2022-11-02 20:21:18,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:21:18,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747438079] [2022-11-02 20:21:18,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:18,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:21:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:18,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:18,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:21:18,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747438079] [2022-11-02 20:21:18,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747438079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:18,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:18,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 20:21:18,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853705912] [2022-11-02 20:21:18,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:18,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:21:18,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:21:18,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:21:18,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:21:18,998 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 495 [2022-11-02 20:21:19,004 INFO L100 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) [2022-11-02 20:21:19,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:21:19,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 495 [2022-11-02 20:21:19,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:21:25,913 INFO L130 PetriNetUnfolder]: 5804/22022 cut-off events. [2022-11-02 20:21:25,914 INFO L131 PetriNetUnfolder]: For 413/413 co-relation queries the response was YES. [2022-11-02 20:21:26,021 INFO L83 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 209730 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. [2022-11-02 20:21:26,099 INFO L137 encePairwiseOnDemand]: 463/495 looper letters, 343 selfloop transitions, 44 changer transitions 0/707 dead transitions. [2022-11-02 20:21:26,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 707 transitions, 2305 flow [2022-11-02 20:21:26,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:21:26,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-02 20:21:26,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 7537 transitions. [2022-11-02 20:21:26,116 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6921028466483012 [2022-11-02 20:21:26,116 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 7537 transitions. [2022-11-02 20:21:26,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 7537 transitions. [2022-11-02 20:21:26,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:21:26,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 7537 transitions. [2022-11-02 20:21:26,135 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) [2022-11-02 20:21:26,153 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) [2022-11-02 20:21:26,157 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) [2022-11-02 20:21:26,157 INFO L175 Difference]: Start difference. First operand has 458 places, 475 transitions, 1058 flow. Second operand 22 states and 7537 transitions. [2022-11-02 20:21:26,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 707 transitions, 2305 flow [2022-11-02 20:21:26,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 707 transitions, 2303 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:21:26,177 INFO L231 Difference]: Finished difference. Result has 486 places, 507 transitions, 1296 flow [2022-11-02 20:21:26,178 INFO L270 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} [2022-11-02 20:21:26,179 INFO L287 CegarLoopForPetriNet]: 448 programPoint places, 38 predicate places. [2022-11-02 20:21:26,179 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 507 transitions, 1296 flow [2022-11-02 20:21:26,181 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) [2022-11-02 20:21:26,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:21:26,182 INFO L208 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] [2022-11-02 20:21:26,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:21:26,182 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)] === [2022-11-02 20:21:26,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:26,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1950405236, now seen corresponding path program 1 times [2022-11-02 20:21:26,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:21:26,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337220597] [2022-11-02 20:21:26,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:26,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:21:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:26,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:26,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:21:26,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337220597] [2022-11-02 20:21:26,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337220597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:26,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:26,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:21:26,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732060871] [2022-11-02 20:21:26,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:26,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:21:26,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:21:26,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:21:26,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:21:26,447 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 495 [2022-11-02 20:21:26,450 INFO L100 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) [2022-11-02 20:21:26,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:21:26,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 495 [2022-11-02 20:21:26,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:21:27,973 INFO L130 PetriNetUnfolder]: 275/5422 cut-off events. [2022-11-02 20:21:27,973 INFO L131 PetriNetUnfolder]: For 202/215 co-relation queries the response was YES. [2022-11-02 20:21:28,020 INFO L83 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 47. Compared 41601 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. [2022-11-02 20:21:28,036 INFO L137 encePairwiseOnDemand]: 472/495 looper letters, 76 selfloop transitions, 22 changer transitions 0/531 dead transitions. [2022-11-02 20:21:28,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 531 transitions, 1545 flow [2022-11-02 20:21:28,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:21:28,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:21:28,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2604 transitions. [2022-11-02 20:21:28,043 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8767676767676768 [2022-11-02 20:21:28,043 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2604 transitions. [2022-11-02 20:21:28,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2604 transitions. [2022-11-02 20:21:28,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:21:28,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2604 transitions. [2022-11-02 20:21:28,050 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) [2022-11-02 20:21:28,056 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) [2022-11-02 20:21:28,057 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) [2022-11-02 20:21:28,058 INFO L175 Difference]: Start difference. First operand has 486 places, 507 transitions, 1296 flow. Second operand 6 states and 2604 transitions. [2022-11-02 20:21:28,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 531 transitions, 1545 flow [2022-11-02 20:21:28,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 531 transitions, 1523 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-02 20:21:28,073 INFO L231 Difference]: Finished difference. Result has 484 places, 524 transitions, 1424 flow [2022-11-02 20:21:28,074 INFO L270 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} [2022-11-02 20:21:28,075 INFO L287 CegarLoopForPetriNet]: 448 programPoint places, 36 predicate places. [2022-11-02 20:21:28,075 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 524 transitions, 1424 flow [2022-11-02 20:21:28,076 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) [2022-11-02 20:21:28,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:21:28,076 INFO L208 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] [2022-11-02 20:21:28,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:21:28,077 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)] === [2022-11-02 20:21:28,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:28,077 INFO L85 PathProgramCache]: Analyzing trace with hash 675793813, now seen corresponding path program 1 times [2022-11-02 20:21:28,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:21:28,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877370079] [2022-11-02 20:21:28,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:28,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:21:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:33,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:33,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:21:33,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877370079] [2022-11-02 20:21:33,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877370079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:33,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:33,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-11-02 20:21:33,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54597997] [2022-11-02 20:21:33,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:33,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-02 20:21:33,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:21:33,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-02 20:21:33,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1498, Unknown=0, NotChecked=0, Total=1640 [2022-11-02 20:21:33,042 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 495 [2022-11-02 20:21:33,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 524 transitions, 1424 flow. Second operand has 41 states, 41 states have (on average 254.8780487804878) internal successors, (10450), 41 states have internal predecessors, (10450), 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) [2022-11-02 20:21:33,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:21:33,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 495 [2022-11-02 20:21:33,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:22:18,645 INFO L130 PetriNetUnfolder]: 26632/86056 cut-off events. [2022-11-02 20:22:18,645 INFO L131 PetriNetUnfolder]: For 10490/10516 co-relation queries the response was YES. [2022-11-02 20:22:19,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151237 conditions, 86056 events. 26632/86056 cut-off events. For 10490/10516 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 952029 event pairs, 4450 based on Foata normal form. 92/82085 useless extension candidates. Maximal degree in co-relation 141882. Up to 23725 conditions per place. [2022-11-02 20:22:19,419 INFO L137 encePairwiseOnDemand]: 435/495 looper letters, 1722 selfloop transitions, 198 changer transitions 0/2166 dead transitions. [2022-11-02 20:22:19,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 2166 transitions, 10575 flow [2022-11-02 20:22:19,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-11-02 20:22:19,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2022-11-02 20:22:19,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 22527 transitions. [2022-11-02 20:22:19,469 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5549889135254988 [2022-11-02 20:22:19,469 INFO L72 ComplementDD]: Start complementDD. Operand 82 states and 22527 transitions. [2022-11-02 20:22:19,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 22527 transitions. [2022-11-02 20:22:19,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:22:19,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 82 states and 22527 transitions. [2022-11-02 20:22:19,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 83 states, 82 states have (on average 274.719512195122) internal successors, (22527), 82 states have internal predecessors, (22527), 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) [2022-11-02 20:22:19,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 83 states, 83 states have (on average 495.0) internal successors, (41085), 83 states have internal predecessors, (41085), 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) [2022-11-02 20:22:19,603 INFO L81 ComplementDD]: Finished complementDD. Result has 83 states, 83 states have (on average 495.0) internal successors, (41085), 83 states have internal predecessors, (41085), 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) [2022-11-02 20:22:19,603 INFO L175 Difference]: Start difference. First operand has 484 places, 524 transitions, 1424 flow. Second operand 82 states and 22527 transitions. [2022-11-02 20:22:19,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 2166 transitions, 10575 flow [2022-11-02 20:22:19,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 2166 transitions, 10508 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-02 20:22:19,737 INFO L231 Difference]: Finished difference. Result has 609 places, 692 transitions, 2886 flow [2022-11-02 20:22:19,738 INFO L270 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=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=2886, PETRI_PLACES=609, PETRI_TRANSITIONS=692} [2022-11-02 20:22:19,739 INFO L287 CegarLoopForPetriNet]: 448 programPoint places, 161 predicate places. [2022-11-02 20:22:19,739 INFO L495 AbstractCegarLoop]: Abstraction has has 609 places, 692 transitions, 2886 flow [2022-11-02 20:22:19,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 254.8780487804878) internal successors, (10450), 41 states have internal predecessors, (10450), 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) [2022-11-02 20:22:19,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:22:19,743 INFO L208 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] [2022-11-02 20:22:19,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:22:19,744 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)] === [2022-11-02 20:22:19,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:22:19,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1443638437, now seen corresponding path program 2 times [2022-11-02 20:22:19,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:22:19,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117516471] [2022-11-02 20:22:19,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:22:19,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:22:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:22:21,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:22:21,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:22:21,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117516471] [2022-11-02 20:22:21,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117516471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:22:21,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:22:21,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-02 20:22:21,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114627943] [2022-11-02 20:22:21,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:22:21,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-02 20:22:21,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:22:21,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-02 20:22:21,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2022-11-02 20:22:21,922 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 495 [2022-11-02 20:22:21,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 692 transitions, 2886 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) [2022-11-02 20:22:21,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:22:21,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 495 [2022-11-02 20:22:21,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand