./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc5343c-c13c-4832-8b46-e63f6caf7699/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc5343c-c13c-4832-8b46-e63f6caf7699/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_2bc5343c-c13c-4832-8b46-e63f6caf7699/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc5343c-c13c-4832-8b46-e63f6caf7699/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc5343c-c13c-4832-8b46-e63f6caf7699/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_2bc5343c-c13c-4832-8b46-e63f6caf7699/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 654ba073723c5bebcf706552b3cd58bc95cc07bc71a7e60391f80a16de89dbcb --- 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 20:59:19,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:59:19,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:59:19,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:59:19,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:59:19,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:59:19,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:59:19,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:59:19,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:59:19,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:59:19,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:59:19,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:59:19,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:59:19,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:59:19,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:59:19,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:59:19,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:59:19,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:59:19,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:59:19,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:59:19,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:59:19,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:59:19,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:59:19,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:59:19,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:59:19,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:59:19,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:59:19,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:59:19,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:59:19,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:59:19,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:59:19,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:59:19,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:59:19,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:59:19,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:59:19,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:59:19,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:59:19,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:59:19,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:59:19,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:59:19,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:59:19,954 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc5343c-c13c-4832-8b46-e63f6caf7699/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:59:19,980 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:59:19,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:59:19,982 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:59:19,982 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:59:19,983 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:59:19,983 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:59:19,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:59:19,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:59:19,984 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:59:19,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:59:19,985 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:59:19,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:59:19,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:59:19,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:59:19,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:59:19,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:59:19,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:59:19,986 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:59:19,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:59:19,986 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:59:19,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:59:19,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:59:19,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:59:19,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:59:19,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:59:19,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:59:19,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:59:19,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:59:19,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:59:19,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:59:19,988 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:59:19,988 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:59:19,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:59:19,989 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc5343c-c13c-4832-8b46-e63f6caf7699/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 654ba073723c5bebcf706552b3cd58bc95cc07bc71a7e60391f80a16de89dbcb [2022-11-02 20:59:20,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:59:20,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:59:20,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:59:20,275 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:59:20,276 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:59:20,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc5343c-c13c-4832-8b46-e63f6caf7699/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i [2022-11-02 20:59:20,353 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc5343c-c13c-4832-8b46-e63f6caf7699/bin/uautomizer-Dbtcem3rbc/data/4b6ead06a/7e587b9ba2bc407da76beb4f945bbea8/FLAG414d5bdde [2022-11-02 20:59:20,826 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:59:20,826 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i [2022-11-02 20:59:20,839 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc5343c-c13c-4832-8b46-e63f6caf7699/bin/uautomizer-Dbtcem3rbc/data/4b6ead06a/7e587b9ba2bc407da76beb4f945bbea8/FLAG414d5bdde [2022-11-02 20:59:21,150 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc5343c-c13c-4832-8b46-e63f6caf7699/bin/uautomizer-Dbtcem3rbc/data/4b6ead06a/7e587b9ba2bc407da76beb4f945bbea8 [2022-11-02 20:59:21,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:59:21,154 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:59:21,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:59:21,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:59:21,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:59:21,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:59:21" (1/1) ... [2022-11-02 20:59:21,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193cd40a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:21, skipping insertion in model container [2022-11-02 20:59:21,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:59:21" (1/1) ... [2022-11-02 20:59:21,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:59:21,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:59:21,400 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-02 20:59:21,561 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[30448,30461] [2022-11-02 20:59:21,569 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[30811,30824] [2022-11-02 20:59:21,580 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31483,31496] [2022-11-02 20:59:21,581 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31534,31547] [2022-11-02 20:59:21,584 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31683,31696] [2022-11-02 20:59:21,585 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31760,31773] [2022-11-02 20:59:21,586 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31807,31820] [2022-11-02 20:59:21,588 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31916,31929] [2022-11-02 20:59:21,589 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32035,32048] [2022-11-02 20:59:21,590 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32083,32096] [2022-11-02 20:59:21,592 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32160,32173] [2022-11-02 20:59:21,593 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32286,32299] [2022-11-02 20:59:21,602 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32897,32910] [2022-11-02 20:59:21,604 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32974,32987] [2022-11-02 20:59:21,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:59:21,615 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:59:21,629 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-02 20:59:21,667 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[30448,30461] [2022-11-02 20:59:21,669 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[30811,30824] [2022-11-02 20:59:21,676 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31483,31496] [2022-11-02 20:59:21,682 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31534,31547] [2022-11-02 20:59:21,683 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31683,31696] [2022-11-02 20:59:21,686 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31760,31773] [2022-11-02 20:59:21,688 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31807,31820] [2022-11-02 20:59:21,690 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31916,31929] [2022-11-02 20:59:21,698 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32035,32048] [2022-11-02 20:59:21,699 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32083,32096] [2022-11-02 20:59:21,701 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32160,32173] [2022-11-02 20:59:21,705 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32286,32299] [2022-11-02 20:59:21,712 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32897,32910] [2022-11-02 20:59:21,717 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_2bc5343c-c13c-4832-8b46-e63f6caf7699/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32974,32987] [2022-11-02 20:59:21,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:59:21,755 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:59:21,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:21 WrapperNode [2022-11-02 20:59:21,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:59:21,756 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:59:21,756 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:59:21,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:59:21,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:21" (1/1) ... [2022-11-02 20:59:21,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:21" (1/1) ... [2022-11-02 20:59:21,824 INFO L138 Inliner]: procedures = 174, calls = 73, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 469 [2022-11-02 20:59:21,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:59:21,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:59:21,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:59:21,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:59:21,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:21" (1/1) ... [2022-11-02 20:59:21,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:21" (1/1) ... [2022-11-02 20:59:21,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:21" (1/1) ... [2022-11-02 20:59:21,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:21" (1/1) ... [2022-11-02 20:59:21,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:21" (1/1) ... [2022-11-02 20:59:21,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:21" (1/1) ... [2022-11-02 20:59:21,871 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:21" (1/1) ... [2022-11-02 20:59:21,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:21" (1/1) ... [2022-11-02 20:59:21,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:59:21,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:59:21,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:59:21,880 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:59:21,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:21" (1/1) ... [2022-11-02 20:59:21,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:59:21,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc5343c-c13c-4832-8b46-e63f6caf7699/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:21,917 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc5343c-c13c-4832-8b46-e63f6caf7699/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:59:21,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc5343c-c13c-4832-8b46-e63f6caf7699/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:59:21,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:59:21,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:59:21,959 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:59:21,959 INFO L130 BoogieDeclarations]: Found specification of procedure worker_fn [2022-11-02 20:59:21,959 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_fn [2022-11-02 20:59:21,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:59:21,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:59:21,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:59:21,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:59:21,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:59:21,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:59:21,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:59:21,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:59:21,962 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 20:59:22,115 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:59:22,117 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:59:23,041 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:59:23,054 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:59:23,054 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-02 20:59:23,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:59:23 BoogieIcfgContainer [2022-11-02 20:59:23,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:59:23,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:59:23,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:59:23,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:59:23,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:59:21" (1/3) ... [2022-11-02 20:59:23,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284cdf05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:59:23, skipping insertion in model container [2022-11-02 20:59:23,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:21" (2/3) ... [2022-11-02 20:59:23,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284cdf05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:59:23, skipping insertion in model container [2022-11-02 20:59:23,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:59:23" (3/3) ... [2022-11-02 20:59:23,069 INFO L112 eAbstractionObserver]: Analyzing ICFG one_time_barrier_twice_2t.i [2022-11-02 20:59:23,078 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:59:23,091 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:59:23,093 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-11-02 20:59:23,094 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:59:23,257 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-02 20:59:23,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 482 places, 542 transitions, 1092 flow [2022-11-02 20:59:23,713 INFO L130 PetriNetUnfolder]: 95/795 cut-off events. [2022-11-02 20:59:23,714 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:59:23,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 801 conditions, 795 events. 95/795 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2662 event pairs, 0 based on Foata normal form. 0/655 useless extension candidates. Maximal degree in co-relation 462. Up to 4 conditions per place. [2022-11-02 20:59:23,756 INFO L82 GeneralOperation]: Start removeDead. Operand has 482 places, 542 transitions, 1092 flow [2022-11-02 20:59:23,773 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 482 places, 542 transitions, 1092 flow [2022-11-02 20:59:23,793 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:59:23,802 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;@6ef6306d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:59:23,803 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-11-02 20:59:23,810 INFO L130 PetriNetUnfolder]: 3/53 cut-off events. [2022-11-02 20:59:23,810 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:59:23,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:59:23,811 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] [2022-11-02 20:59:23,812 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-11-02 20:59:23,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:23,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1884340507, now seen corresponding path program 1 times [2022-11-02 20:59:23,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:23,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825693001] [2022-11-02 20:59:23,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:23,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:24,205 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 20:59:24,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:24,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825693001] [2022-11-02 20:59:24,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825693001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:24,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:24,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:59:24,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46125872] [2022-11-02 20:59:24,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:24,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:24,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:24,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:24,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:59:24,262 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 487 out of 542 [2022-11-02 20:59:24,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 542 transitions, 1092 flow. Second operand has 3 states, 3 states have (on average 488.0) internal successors, (1464), 3 states have internal predecessors, (1464), 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 20:59:24,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:59:24,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 487 of 542 [2022-11-02 20:59:24,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:59:24,591 INFO L130 PetriNetUnfolder]: 28/734 cut-off events. [2022-11-02 20:59:24,592 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 20:59:24,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 758 conditions, 734 events. 28/734 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2574 event pairs, 0 based on Foata normal form. 66/727 useless extension candidates. Maximal degree in co-relation 423. Up to 12 conditions per place. [2022-11-02 20:59:24,608 INFO L137 encePairwiseOnDemand]: 495/542 looper letters, 15 selfloop transitions, 2 changer transitions 0/504 dead transitions. [2022-11-02 20:59:24,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 504 transitions, 1050 flow [2022-11-02 20:59:24,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:24,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:59:24,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1524 transitions. [2022-11-02 20:59:24,635 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9372693726937269 [2022-11-02 20:59:24,636 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1524 transitions. [2022-11-02 20:59:24,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1524 transitions. [2022-11-02 20:59:24,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:59:24,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1524 transitions. [2022-11-02 20:59:24,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 508.0) internal successors, (1524), 3 states have internal predecessors, (1524), 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 20:59:24,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 542.0) internal successors, (2168), 4 states have internal predecessors, (2168), 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 20:59:24,670 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 542.0) internal successors, (2168), 4 states have internal predecessors, (2168), 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 20:59:24,672 INFO L175 Difference]: Start difference. First operand has 482 places, 542 transitions, 1092 flow. Second operand 3 states and 1524 transitions. [2022-11-02 20:59:24,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 504 transitions, 1050 flow [2022-11-02 20:59:24,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 504 transitions, 1050 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:59:24,694 INFO L231 Difference]: Finished difference. Result has 485 places, 499 transitions, 1016 flow [2022-11-02 20:59:24,698 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=542, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1016, PETRI_PLACES=485, PETRI_TRANSITIONS=499} [2022-11-02 20:59:24,701 INFO L287 CegarLoopForPetriNet]: 482 programPoint places, 3 predicate places. [2022-11-02 20:59:24,702 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 499 transitions, 1016 flow [2022-11-02 20:59:24,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 488.0) internal successors, (1464), 3 states have internal predecessors, (1464), 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 20:59:24,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:59:24,709 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] [2022-11-02 20:59:24,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:59:24,710 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-11-02 20:59:24,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:24,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1789690299, now seen corresponding path program 1 times [2022-11-02 20:59:24,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:24,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787933329] [2022-11-02 20:59:24,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:24,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:24,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:24,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:24,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787933329] [2022-11-02 20:59:24,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787933329] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:24,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839696124] [2022-11-02 20:59:24,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:24,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:24,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc5343c-c13c-4832-8b46-e63f6caf7699/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:24,924 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc5343c-c13c-4832-8b46-e63f6caf7699/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:24,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc5343c-c13c-4832-8b46-e63f6caf7699/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:59:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:25,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:59:25,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:25,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:25,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:25,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:25,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839696124] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:25,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:25,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2022-11-02 20:59:25,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799528826] [2022-11-02 20:59:25,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:25,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:59:25,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:25,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:59:25,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:59:25,209 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 487 out of 542 [2022-11-02 20:59:25,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 499 transitions, 1016 flow. Second operand has 5 states, 5 states have (on average 490.2) internal successors, (2451), 5 states have internal predecessors, (2451), 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 20:59:25,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:59:25,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 487 of 542 [2022-11-02 20:59:25,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:59:25,493 INFO L130 PetriNetUnfolder]: 28/736 cut-off events. [2022-11-02 20:59:25,494 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-02 20:59:25,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 736 events. 28/736 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2568 event pairs, 0 based on Foata normal form. 1/665 useless extension candidates. Maximal degree in co-relation 710. Up to 7 conditions per place. [2022-11-02 20:59:25,505 INFO L137 encePairwiseOnDemand]: 538/542 looper letters, 14 selfloop transitions, 4 changer transitions 0/505 dead transitions. [2022-11-02 20:59:25,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 505 transitions, 1064 flow [2022-11-02 20:59:25,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:59:25,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 20:59:25,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1967 transitions. [2022-11-02 20:59:25,511 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9072878228782287 [2022-11-02 20:59:25,511 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1967 transitions. [2022-11-02 20:59:25,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1967 transitions. [2022-11-02 20:59:25,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:59:25,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1967 transitions. [2022-11-02 20:59:25,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 491.75) internal successors, (1967), 4 states have internal predecessors, (1967), 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 20:59:25,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 542.0) internal successors, (2710), 5 states have internal predecessors, (2710), 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 20:59:25,525 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 542.0) internal successors, (2710), 5 states have internal predecessors, (2710), 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 20:59:25,525 INFO L175 Difference]: Start difference. First operand has 485 places, 499 transitions, 1016 flow. Second operand 4 states and 1967 transitions. [2022-11-02 20:59:25,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 505 transitions, 1064 flow [2022-11-02 20:59:25,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 505 transitions, 1062 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:59:25,536 INFO L231 Difference]: Finished difference. Result has 489 places, 500 transitions, 1034 flow [2022-11-02 20:59:25,537 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=542, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1034, PETRI_PLACES=489, PETRI_TRANSITIONS=500} [2022-11-02 20:59:25,538 INFO L287 CegarLoopForPetriNet]: 482 programPoint places, 7 predicate places. [2022-11-02 20:59:25,539 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 500 transitions, 1034 flow [2022-11-02 20:59:25,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 490.2) internal successors, (2451), 5 states have internal predecessors, (2451), 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 20:59:25,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:59:25,543 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:59:25,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc5343c-c13c-4832-8b46-e63f6caf7699/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:25,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc5343c-c13c-4832-8b46-e63f6caf7699/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:25,770 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-11-02 20:59:25,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:25,771 INFO L85 PathProgramCache]: Analyzing trace with hash -229323493, now seen corresponding path program 2 times [2022-11-02 20:59:25,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:25,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32169409] [2022-11-02 20:59:25,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:25,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:25,967 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:59:25,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:25,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32169409] [2022-11-02 20:59:25,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32169409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:25,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:25,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:59:25,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503652087] [2022-11-02 20:59:25,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:25,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:59:25,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:25,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:59:25,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:59:25,973 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 484 out of 542 [2022-11-02 20:59:25,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 500 transitions, 1034 flow. Second operand has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 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 20:59:25,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:59:25,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 484 of 542 [2022-11-02 20:59:25,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:59:26,212 INFO L130 PetriNetUnfolder]: 28/732 cut-off events. [2022-11-02 20:59:26,212 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-02 20:59:26,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 732 events. 28/732 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2555 event pairs, 0 based on Foata normal form. 0/662 useless extension candidates. Maximal degree in co-relation 700. Up to 9 conditions per place. [2022-11-02 20:59:26,227 INFO L137 encePairwiseOnDemand]: 536/542 looper letters, 8 selfloop transitions, 4 changer transitions 0/496 dead transitions. [2022-11-02 20:59:26,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 496 transitions, 1050 flow [2022-11-02 20:59:26,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:59:26,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 20:59:26,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1950 transitions. [2022-11-02 20:59:26,232 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8994464944649446 [2022-11-02 20:59:26,233 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1950 transitions. [2022-11-02 20:59:26,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1950 transitions. [2022-11-02 20:59:26,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:59:26,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1950 transitions. [2022-11-02 20:59:26,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 487.5) internal successors, (1950), 4 states have internal predecessors, (1950), 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 20:59:26,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 542.0) internal successors, (2710), 5 states have internal predecessors, (2710), 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 20:59:26,247 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 542.0) internal successors, (2710), 5 states have internal predecessors, (2710), 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 20:59:26,247 INFO L175 Difference]: Start difference. First operand has 489 places, 500 transitions, 1034 flow. Second operand 4 states and 1950 transitions. [2022-11-02 20:59:26,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 496 transitions, 1050 flow [2022-11-02 20:59:26,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 496 transitions, 1046 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-02 20:59:26,259 INFO L231 Difference]: Finished difference. Result has 487 places, 496 transitions, 1030 flow [2022-11-02 20:59:26,260 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=542, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1030, PETRI_PLACES=487, PETRI_TRANSITIONS=496} [2022-11-02 20:59:26,261 INFO L287 CegarLoopForPetriNet]: 482 programPoint places, 5 predicate places. [2022-11-02 20:59:26,261 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 496 transitions, 1030 flow [2022-11-02 20:59:26,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 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 20:59:26,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:59:26,263 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:59:26,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:59:26,263 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-11-02 20:59:26,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:26,264 INFO L85 PathProgramCache]: Analyzing trace with hash -305101375, now seen corresponding path program 1 times [2022-11-02 20:59:26,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:26,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223157560] [2022-11-02 20:59:26,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:26,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:59:26,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:26,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223157560] [2022-11-02 20:59:26,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223157560] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:26,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154565877] [2022-11-02 20:59:26,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:26,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:26,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc5343c-c13c-4832-8b46-e63f6caf7699/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:26,496 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc5343c-c13c-4832-8b46-e63f6caf7699/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:26,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc5343c-c13c-4832-8b46-e63f6caf7699/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:59:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:26,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:59:26,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:26,780 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:59:26,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:26,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154565877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:26,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:59:26,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-11-02 20:59:26,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528546078] [2022-11-02 20:59:26,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:26,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:59:26,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:26,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:59:26,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:59:26,789 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 489 out of 542 [2022-11-02 20:59:26,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 496 transitions, 1030 flow. Second operand has 4 states, 4 states have (on average 491.25) internal successors, (1965), 4 states have internal predecessors, (1965), 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 20:59:26,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:59:26,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 489 of 542 [2022-11-02 20:59:26,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:59:27,031 INFO L130 PetriNetUnfolder]: 28/727 cut-off events. [2022-11-02 20:59:27,031 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-02 20:59:27,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 727 events. 28/727 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2517 event pairs, 0 based on Foata normal form. 0/658 useless extension candidates. Maximal degree in co-relation 695. Up to 5 conditions per place. [2022-11-02 20:59:27,045 INFO L137 encePairwiseOnDemand]: 538/542 looper letters, 7 selfloop transitions, 3 changer transitions 0/496 dead transitions. [2022-11-02 20:59:27,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 496 transitions, 1048 flow [2022-11-02 20:59:27,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:59:27,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 20:59:27,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1967 transitions. [2022-11-02 20:59:27,050 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9072878228782287 [2022-11-02 20:59:27,050 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1967 transitions. [2022-11-02 20:59:27,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1967 transitions. [2022-11-02 20:59:27,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:59:27,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1967 transitions. [2022-11-02 20:59:27,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 491.75) internal successors, (1967), 4 states have internal predecessors, (1967), 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 20:59:27,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 542.0) internal successors, (2710), 5 states have internal predecessors, (2710), 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 20:59:27,065 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 542.0) internal successors, (2710), 5 states have internal predecessors, (2710), 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 20:59:27,065 INFO L175 Difference]: Start difference. First operand has 487 places, 496 transitions, 1030 flow. Second operand 4 states and 1967 transitions. [2022-11-02 20:59:27,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 496 transitions, 1048 flow [2022-11-02 20:59:27,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 496 transitions, 1036 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:59:27,081 INFO L231 Difference]: Finished difference. Result has 486 places, 496 transitions, 1031 flow [2022-11-02 20:59:27,082 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=542, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1031, PETRI_PLACES=486, PETRI_TRANSITIONS=496} [2022-11-02 20:59:27,083 INFO L287 CegarLoopForPetriNet]: 482 programPoint places, 4 predicate places. [2022-11-02 20:59:27,083 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 496 transitions, 1031 flow [2022-11-02 20:59:27,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 491.25) internal successors, (1965), 4 states have internal predecessors, (1965), 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 20:59:27,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:59:27,085 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:59:27,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc5343c-c13c-4832-8b46-e63f6caf7699/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:27,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc5343c-c13c-4832-8b46-e63f6caf7699/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:27,307 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-11-02 20:59:27,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:27,307 INFO L85 PathProgramCache]: Analyzing trace with hash 47514415, now seen corresponding path program 1 times [2022-11-02 20:59:27,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:27,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769513206] [2022-11-02 20:59:27,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:27,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:27,428 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:59:27,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:27,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769513206] [2022-11-02 20:59:27,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769513206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:27,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:27,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:59:27,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779947207] [2022-11-02 20:59:27,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:27,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:27,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:27,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:27,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:59:27,433 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 489 out of 542 [2022-11-02 20:59:27,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 496 transitions, 1031 flow. Second operand has 3 states, 3 states have (on average 490.0) internal successors, (1470), 3 states have internal predecessors, (1470), 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 20:59:27,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:59:27,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 489 of 542 [2022-11-02 20:59:27,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:59:27,607 INFO L130 PetriNetUnfolder]: 19/533 cut-off events. [2022-11-02 20:59:27,607 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-11-02 20:59:27,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 533 events. 19/533 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1130 event pairs, 0 based on Foata normal form. 1/486 useless extension candidates. Maximal degree in co-relation 499. Up to 5 conditions per place. [2022-11-02 20:59:27,622 INFO L137 encePairwiseOnDemand]: 539/542 looper letters, 7 selfloop transitions, 2 changer transitions 0/495 dead transitions. [2022-11-02 20:59:27,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 495 transitions, 1043 flow [2022-11-02 20:59:27,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:27,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:59:27,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1477 transitions. [2022-11-02 20:59:27,627 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9083640836408364 [2022-11-02 20:59:27,627 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1477 transitions. [2022-11-02 20:59:27,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1477 transitions. [2022-11-02 20:59:27,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:59:27,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1477 transitions. [2022-11-02 20:59:27,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 492.3333333333333) internal successors, (1477), 3 states have internal predecessors, (1477), 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 20:59:27,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 542.0) internal successors, (2168), 4 states have internal predecessors, (2168), 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 20:59:27,638 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 542.0) internal successors, (2168), 4 states have internal predecessors, (2168), 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 20:59:27,639 INFO L175 Difference]: Start difference. First operand has 486 places, 496 transitions, 1031 flow. Second operand 3 states and 1477 transitions. [2022-11-02 20:59:27,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 495 transitions, 1043 flow [2022-11-02 20:59:27,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 495 transitions, 1040 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:59:27,651 INFO L231 Difference]: Finished difference. Result has 486 places, 495 transitions, 1026 flow [2022-11-02 20:59:27,652 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=542, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1026, PETRI_PLACES=486, PETRI_TRANSITIONS=495} [2022-11-02 20:59:27,652 INFO L287 CegarLoopForPetriNet]: 482 programPoint places, 4 predicate places. [2022-11-02 20:59:27,653 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 495 transitions, 1026 flow [2022-11-02 20:59:27,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 490.0) internal successors, (1470), 3 states have internal predecessors, (1470), 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 20:59:27,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:59:27,655 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:59:27,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:59:27,655 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-11-02 20:59:27,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:27,656 INFO L85 PathProgramCache]: Analyzing trace with hash 267906197, now seen corresponding path program 1 times [2022-11-02 20:59:27,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:27,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483382381] [2022-11-02 20:59:27,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:27,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:30,170 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:59:30,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:30,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483382381] [2022-11-02 20:59:30,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483382381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:30,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:30,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-02 20:59:30,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143225041] [2022-11-02 20:59:30,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:30,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 20:59:30,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:30,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 20:59:30,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:59:30,185 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 542 [2022-11-02 20:59:30,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 495 transitions, 1026 flow. Second operand has 21 states, 21 states have (on average 371.3809523809524) internal successors, (7799), 21 states have internal predecessors, (7799), 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 20:59:30,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:59:30,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 542 [2022-11-02 20:59:30,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:59:34,235 INFO L130 PetriNetUnfolder]: 2475/12019 cut-off events. [2022-11-02 20:59:34,235 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-02 20:59:34,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16148 conditions, 12019 events. 2475/12019 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 118168 event pairs, 976 based on Foata normal form. 0/10727 useless extension candidates. Maximal degree in co-relation 16048. Up to 2878 conditions per place. [2022-11-02 20:59:34,361 INFO L137 encePairwiseOnDemand]: 521/542 looper letters, 234 selfloop transitions, 24 changer transitions 0/624 dead transitions. [2022-11-02 20:59:34,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 624 transitions, 1800 flow [2022-11-02 20:59:34,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:59:34,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-02 20:59:34,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 6166 transitions. [2022-11-02 20:59:34,377 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7110239852398524 [2022-11-02 20:59:34,377 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 6166 transitions. [2022-11-02 20:59:34,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 6166 transitions. [2022-11-02 20:59:34,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:59:34,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 6166 transitions. [2022-11-02 20:59:34,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 385.375) internal successors, (6166), 16 states have internal predecessors, (6166), 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 20:59:34,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 542.0) internal successors, (9214), 17 states have internal predecessors, (9214), 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 20:59:34,421 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 542.0) internal successors, (9214), 17 states have internal predecessors, (9214), 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 20:59:34,421 INFO L175 Difference]: Start difference. First operand has 486 places, 495 transitions, 1026 flow. Second operand 16 states and 6166 transitions. [2022-11-02 20:59:34,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 624 transitions, 1800 flow [2022-11-02 20:59:34,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 624 transitions, 1796 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:59:34,437 INFO L231 Difference]: Finished difference. Result has 504 places, 506 transitions, 1134 flow [2022-11-02 20:59:34,438 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=542, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1134, PETRI_PLACES=504, PETRI_TRANSITIONS=506} [2022-11-02 20:59:34,439 INFO L287 CegarLoopForPetriNet]: 482 programPoint places, 22 predicate places. [2022-11-02 20:59:34,439 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 506 transitions, 1134 flow [2022-11-02 20:59:34,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 371.3809523809524) internal successors, (7799), 21 states have internal predecessors, (7799), 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 20:59:34,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:59:34,443 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:59:34,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:59:34,443 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting worker_fnErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-11-02 20:59:34,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:34,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1146631376, now seen corresponding path program 1 times [2022-11-02 20:59:34,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:34,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708033775] [2022-11-02 20:59:34,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:34,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:36,819 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:59:36,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:36,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708033775] [2022-11-02 20:59:36,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708033775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:36,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:36,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-02 20:59:36,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360735200] [2022-11-02 20:59:36,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:36,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 20:59:36,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:36,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 20:59:36,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:59:36,829 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 542 [2022-11-02 20:59:36,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 506 transitions, 1134 flow. Second operand has 21 states, 21 states have (on average 371.42857142857144) internal successors, (7800), 21 states have internal predecessors, (7800), 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 20:59:36,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:59:36,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 542 [2022-11-02 20:59:36,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:59:40,636 INFO L130 PetriNetUnfolder]: 2501/12492 cut-off events. [2022-11-02 20:59:40,637 INFO L131 PetriNetUnfolder]: For 505/505 co-relation queries the response was YES. [2022-11-02 20:59:40,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17256 conditions, 12492 events. 2501/12492 cut-off events. For 505/505 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 123751 event pairs, 1016 based on Foata normal form. 0/11216 useless extension candidates. Maximal degree in co-relation 17144. Up to 2929 conditions per place. [2022-11-02 20:59:40,740 INFO L137 encePairwiseOnDemand]: 522/542 looper letters, 234 selfloop transitions, 26 changer transitions 0/629 dead transitions. [2022-11-02 20:59:40,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 629 transitions, 1921 flow [2022-11-02 20:59:40,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:59:40,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-02 20:59:40,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 6165 transitions. [2022-11-02 20:59:40,758 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7109086715867159 [2022-11-02 20:59:40,758 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 6165 transitions. [2022-11-02 20:59:40,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 6165 transitions. [2022-11-02 20:59:40,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:59:40,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 6165 transitions. [2022-11-02 20:59:40,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 385.3125) internal successors, (6165), 16 states have internal predecessors, (6165), 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 20:59:40,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 542.0) internal successors, (9214), 17 states have internal predecessors, (9214), 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 20:59:40,803 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 542.0) internal successors, (9214), 17 states have internal predecessors, (9214), 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 20:59:40,804 INFO L175 Difference]: Start difference. First operand has 504 places, 506 transitions, 1134 flow. Second operand 16 states and 6165 transitions. [2022-11-02 20:59:40,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 629 transitions, 1921 flow [2022-11-02 20:59:40,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 629 transitions, 1897 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-02 20:59:40,830 INFO L231 Difference]: Finished difference. Result has 514 places, 512 transitions, 1207 flow [2022-11-02 20:59:40,831 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=542, PETRI_DIFFERENCE_MINUEND_FLOW=1111, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1207, PETRI_PLACES=514, PETRI_TRANSITIONS=512} [2022-11-02 20:59:40,832 INFO L287 CegarLoopForPetriNet]: 482 programPoint places, 32 predicate places. [2022-11-02 20:59:40,832 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 512 transitions, 1207 flow [2022-11-02 20:59:40,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 371.42857142857144) internal successors, (7800), 21 states have internal predecessors, (7800), 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 20:59:40,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:59:40,835 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:59:40,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:59:40,836 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2022-11-02 20:59:40,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:40,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1809153885, now seen corresponding path program 1 times [2022-11-02 20:59:40,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:40,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390124475] [2022-11-02 20:59:40,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:40,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:48,066 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:48,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:48,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390124475] [2022-11-02 20:59:48,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390124475] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:48,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281799421] [2022-11-02 20:59:48,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:48,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:48,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc5343c-c13c-4832-8b46-e63f6caf7699/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:48,068 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc5343c-c13c-4832-8b46-e63f6caf7699/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:48,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc5343c-c13c-4832-8b46-e63f6caf7699/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:59:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:48,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-02 20:59:48,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:49,321 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-02 20:59:49,322 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-02 20:59:49,546 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-02 20:59:49,546 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 45 [2022-11-02 20:59:49,856 INFO L356 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-02 20:59:49,856 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 32 treesize of output 57 [2022-11-02 20:59:50,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-11-02 20:59:50,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-11-02 20:59:50,437 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-11-02 20:59:50,957 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-11-02 20:59:51,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-11-02 20:59:51,175 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-11-02 20:59:52,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-11-02 20:59:52,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-11-02 20:59:53,675 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-11-02 20:59:53,755 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-11-02 20:59:54,316 INFO L356 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2022-11-02 20:59:54,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 32 [2022-11-02 20:59:54,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:54,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-11-02 20:59:55,207 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-11-02 20:59:56,016 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2022-11-02 20:59:56,028 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:59:56,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:56,530 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_695 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_~#pre~0.base| v_ArrVal_695))) (let ((.cse1 (select .cse0 |c_~#in~0.base|))) (or (not (<= (mod (select (select .cse0 |c_~#post~0.base|) |c_~#post~0.offset|) 256) 0)) (not (<= (mod (select .cse1 |c_~#in~0.offset|) 256) 0)) (= (mod (select .cse1 (+ |c_~#in~0.offset| 1)) 256) 0))))) is different from false [2022-11-02 20:59:56,635 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_694 Int) (v_ArrVal_695 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#worker~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#worker~0#1.base|) (+ |c_ULTIMATE.start_main_~#worker~0#1.offset| (* |c_ULTIMATE.start_main_~i~5#1| 4)) v_ArrVal_694)) |c_~#pre~0.base| v_ArrVal_695))) (let ((.cse1 (select .cse0 |c_~#in~0.base|))) (or (not (<= (mod (select (select .cse0 |c_~#post~0.base|) |c_~#post~0.offset|) 256) 0)) (= (mod (select .cse1 (+ |c_~#in~0.offset| 1)) 256) 0) (not (<= (mod (select .cse1 |c_~#in~0.offset|) 256) 0)))))) is different from false [2022-11-02 20:59:56,791 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~5#1_12| Int)) (or (not (<= |v_ULTIMATE.start_main_~i~5#1_12| 0)) (forall ((v_ArrVal_694 Int) (v_ArrVal_695 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#worker~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#worker~0#1.base|) (+ |c_ULTIMATE.start_main_~#worker~0#1.offset| (* |v_ULTIMATE.start_main_~i~5#1_12| 4)) v_ArrVal_694)) |c_~#pre~0.base| v_ArrVal_695))) (let ((.cse0 (select .cse1 |c_~#in~0.base|))) (or (= (mod (select .cse0 (+ |c_~#in~0.offset| 1)) 256) 0) (not (<= (mod (select .cse0 |c_~#in~0.offset|) 256) 0)) (not (<= (mod (select (select .cse1 |c_~#post~0.base|) |c_~#post~0.offset|) 256) 0)))))))) is different from false [2022-11-02 21:00:03,950 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:00:03,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:00:03,956 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:00:03,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:00:03,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:00:03,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:00:03,979 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:00:04,030 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:00:04,032 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42184 treesize of output 41550 [2022-11-02 21:00:04,448 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:00:04,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41514 treesize of output 38456 [2022-11-02 21:00:04,856 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38380 treesize of output 37612 [2022-11-02 21:00:05,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42348 treesize of output 41388 [2022-11-02 21:00:05,634 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41388 treesize of output 41004 [2022-11-02 21:00:06,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 59 [2022-11-02 21:00:10,837 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11702 treesize of output 11190