./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a 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_9f89f100-b784-43e2-91c4-657e99462b94/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f89f100-b784-43e2-91c4-657e99462b94/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f89f100-b784-43e2-91c4-657e99462b94/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f89f100-b784-43e2-91c4-657e99462b94/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f89f100-b784-43e2-91c4-657e99462b94/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f89f100-b784-43e2-91c4-657e99462b94/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7912270168edfe57ed71790473a28594e3bc48002f5ead86961705c042bbf781 --- 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-38b53e6 [2022-11-25 18:16:19,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:16:19,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:16:19,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:16:19,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:16:19,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:16:19,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:16:19,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:16:19,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:16:19,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:16:19,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:16:19,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:16:19,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:16:19,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:16:19,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:16:19,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:16:19,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:16:19,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:16:19,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:16:19,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:16:19,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:16:19,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:16:19,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:16:19,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:16:19,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:16:19,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:16:19,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:16:19,540 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:16:19,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:16:19,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:16:19,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:16:19,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:16:19,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:16:19,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:16:19,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:16:19,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:16:19,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:16:19,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:16:19,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:16:19,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:16:19,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:16:19,553 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f89f100-b784-43e2-91c4-657e99462b94/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 18:16:19,594 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:16:19,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:16:19,595 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:16:19,595 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:16:19,596 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:16:19,596 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:16:19,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:16:19,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:16:19,597 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:16:19,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:16:19,598 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:16:19,598 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:16:19,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:16:19,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:16:19,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:16:19,599 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 18:16:19,599 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 18:16:19,600 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 18:16:19,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:16:19,600 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:16:19,600 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:16:19,600 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:16:19,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:16:19,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:16:19,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:16:19,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:16:19,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:16:19,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:16:19,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:16:19,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:16:19,603 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:16:19,603 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:16:19,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:16:19,603 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_9f89f100-b784-43e2-91c4-657e99462b94/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f89f100-b784-43e2-91c4-657e99462b94/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7912270168edfe57ed71790473a28594e3bc48002f5ead86961705c042bbf781 [2022-11-25 18:16:19,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:16:19,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:16:19,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:16:19,914 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:16:19,915 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:16:19,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f89f100-b784-43e2-91c4-657e99462b94/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-25 18:16:22,991 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:16:23,306 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:16:23,311 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f89f100-b784-43e2-91c4-657e99462b94/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-25 18:16:23,330 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f89f100-b784-43e2-91c4-657e99462b94/bin/uautomizer-ZsLfNo2U6R/data/c8a1777a6/7456536d491144e18006cc3344ce3f5a/FLAGf247c28aa [2022-11-25 18:16:23,348 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f89f100-b784-43e2-91c4-657e99462b94/bin/uautomizer-ZsLfNo2U6R/data/c8a1777a6/7456536d491144e18006cc3344ce3f5a [2022-11-25 18:16:23,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:16:23,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:16:23,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:16:23,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:16:23,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:16:23,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:16:23" (1/1) ... [2022-11-25 18:16:23,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bdb29bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:23, skipping insertion in model container [2022-11-25 18:16:23,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:16:23" (1/1) ... [2022-11-25 18:16:23,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:16:23,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:16:23,611 WARN L237 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_9f89f100-b784-43e2-91c4-657e99462b94/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-11-25 18:16:23,751 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,752 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,752 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,752 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,753 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,753 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,753 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,754 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,754 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,757 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,757 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,757 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,758 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,758 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,758 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,761 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,761 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,761 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,768 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,768 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,769 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,769 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,769 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,771 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:16:23,781 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:16:23,794 WARN L237 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_9f89f100-b784-43e2-91c4-657e99462b94/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-11-25 18:16:23,834 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,838 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,838 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,840 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,841 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,841 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,842 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,842 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,843 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,843 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,843 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,844 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,845 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,845 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,846 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,846 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,846 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,847 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,848 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,852 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,852 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,853 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,853 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,853 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,853 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,857 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,858 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,858 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,859 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,859 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:16:23,860 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:16:23,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:16:23,908 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:16:23,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:23 WrapperNode [2022-11-25 18:16:23,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:16:23,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:16:23,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:16:23,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:16:23,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:23" (1/1) ... [2022-11-25 18:16:23,951 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:23" (1/1) ... [2022-11-25 18:16:23,986 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 83 [2022-11-25 18:16:23,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:16:23,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:16:23,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:16:23,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:16:23,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:23" (1/1) ... [2022-11-25 18:16:23,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:23" (1/1) ... [2022-11-25 18:16:24,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:23" (1/1) ... [2022-11-25 18:16:24,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:23" (1/1) ... [2022-11-25 18:16:24,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:23" (1/1) ... [2022-11-25 18:16:24,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:23" (1/1) ... [2022-11-25 18:16:24,033 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:23" (1/1) ... [2022-11-25 18:16:24,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:23" (1/1) ... [2022-11-25 18:16:24,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:16:24,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:16:24,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:16:24,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:16:24,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:23" (1/1) ... [2022-11-25 18:16:24,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:16:24,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f89f100-b784-43e2-91c4-657e99462b94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:16:24,092 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f89f100-b784-43e2-91c4-657e99462b94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:16:24,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f89f100-b784-43e2-91c4-657e99462b94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:16:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:16:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 18:16:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:16:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:16:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:16:24,143 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-25 18:16:24,143 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-25 18:16:24,143 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-25 18:16:24,143 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-25 18:16:24,143 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-25 18:16:24,144 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-25 18:16:24,144 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-25 18:16:24,144 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-25 18:16:24,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:16:24,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 18:16:24,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:16:24,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:16:24,147 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:16:24,294 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:16:24,297 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:16:24,671 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:16:24,678 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:16:24,678 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 18:16:24,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:16:24 BoogieIcfgContainer [2022-11-25 18:16:24,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:16:24,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:16:24,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:16:24,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:16:24,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:16:23" (1/3) ... [2022-11-25 18:16:24,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16143f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:16:24, skipping insertion in model container [2022-11-25 18:16:24,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:23" (2/3) ... [2022-11-25 18:16:24,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16143f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:16:24, skipping insertion in model container [2022-11-25 18:16:24,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:16:24" (3/3) ... [2022-11-25 18:16:24,690 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-25 18:16:24,709 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:16:24,709 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-25 18:16:24,710 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:16:24,781 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 18:16:24,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 119 transitions, 258 flow [2022-11-25 18:16:24,876 INFO L130 PetriNetUnfolder]: 2/115 cut-off events. [2022-11-25 18:16:24,876 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:16:24,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 115 events. 2/115 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2022-11-25 18:16:24,881 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 119 transitions, 258 flow [2022-11-25 18:16:24,886 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 110 transitions, 232 flow [2022-11-25 18:16:24,890 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:16:24,904 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 110 transitions, 232 flow [2022-11-25 18:16:24,907 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 110 transitions, 232 flow [2022-11-25 18:16:24,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 110 transitions, 232 flow [2022-11-25 18:16:24,936 INFO L130 PetriNetUnfolder]: 2/110 cut-off events. [2022-11-25 18:16:24,936 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:16:24,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 110 events. 2/110 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-11-25 18:16:24,939 INFO L119 LiptonReduction]: Number of co-enabled transitions 2382 [2022-11-25 18:16:28,706 INFO L134 LiptonReduction]: Checked pairs total: 3802 [2022-11-25 18:16:28,707 INFO L136 LiptonReduction]: Total number of compositions: 115 [2022-11-25 18:16:28,722 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:16:28,728 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@6e622528, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:16:28,729 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-25 18:16:28,730 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-25 18:16:28,731 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:16:28,731 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:16:28,731 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 18:16:28,732 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:16:28,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:16:28,737 INFO L85 PathProgramCache]: Analyzing trace with hash 416, now seen corresponding path program 1 times [2022-11-25 18:16:28,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:16:28,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695216717] [2022-11-25 18:16:28,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:16:28,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:16:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:16:28,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:16:28,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:16:28,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695216717] [2022-11-25 18:16:28,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695216717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:16:28,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:16:28,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 18:16:28,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463062796] [2022-11-25 18:16:28,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:16:28,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:16:28,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:16:28,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:16:28,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:16:28,893 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 234 [2022-11-25 18:16:28,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 74 flow. Second operand has 2 states, 2 states have (on average 112.5) internal successors, (225), 2 states have internal predecessors, (225), 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) [2022-11-25 18:16:28,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:16:28,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 234 [2022-11-25 18:16:28,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:16:29,213 INFO L130 PetriNetUnfolder]: 1136/1631 cut-off events. [2022-11-25 18:16:29,213 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-25 18:16:29,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3337 conditions, 1631 events. 1136/1631 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 7055 event pairs, 1136 based on Foata normal form. 0/1540 useless extension candidates. Maximal degree in co-relation 3325. Up to 1621 conditions per place. [2022-11-25 18:16:29,231 INFO L137 encePairwiseOnDemand]: 225/234 looper letters, 20 selfloop transitions, 0 changer transitions 0/22 dead transitions. [2022-11-25 18:16:29,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 22 transitions, 96 flow [2022-11-25 18:16:29,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:16:29,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 18:16:29,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 253 transitions. [2022-11-25 18:16:29,248 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5405982905982906 [2022-11-25 18:16:29,249 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 253 transitions. [2022-11-25 18:16:29,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 253 transitions. [2022-11-25 18:16:29,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:16:29,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 253 transitions. [2022-11-25 18:16:29,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 126.5) internal successors, (253), 2 states have internal predecessors, (253), 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) [2022-11-25 18:16:29,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:16:29,269 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:16:29,270 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 74 flow. Second operand 2 states and 253 transitions. [2022-11-25 18:16:29,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 22 transitions, 96 flow [2022-11-25 18:16:29,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 22 transitions, 92 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 18:16:29,279 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 52 flow [2022-11-25 18:16:29,281 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=52, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2022-11-25 18:16:29,288 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2022-11-25 18:16:29,288 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 52 flow [2022-11-25 18:16:29,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 112.5) internal successors, (225), 2 states have internal predecessors, (225), 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) [2022-11-25 18:16:29,288 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:16:29,289 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:16:29,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:16:29,290 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:16:29,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:16:29,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1544764660, now seen corresponding path program 1 times [2022-11-25 18:16:29,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:16:29,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632108320] [2022-11-25 18:16:29,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:16:29,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:16:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:16:29,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:16:29,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:16:29,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632108320] [2022-11-25 18:16:29,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632108320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:16:29,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:16:29,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:16:29,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74894878] [2022-11-25 18:16:29,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:16:29,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:16:29,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:16:29,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:16:29,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:16:29,855 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 234 [2022-11-25 18:16:29,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 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) [2022-11-25 18:16:29,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:16:29,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 234 [2022-11-25 18:16:29,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:16:30,339 INFO L130 PetriNetUnfolder]: 2736/3846 cut-off events. [2022-11-25 18:16:30,340 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:16:30,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7825 conditions, 3846 events. 2736/3846 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 16977 event pairs, 789 based on Foata normal form. 0/3711 useless extension candidates. Maximal degree in co-relation 7822. Up to 2821 conditions per place. [2022-11-25 18:16:30,366 INFO L137 encePairwiseOnDemand]: 229/234 looper letters, 48 selfloop transitions, 6 changer transitions 0/54 dead transitions. [2022-11-25 18:16:30,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 54 transitions, 230 flow [2022-11-25 18:16:30,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:16:30,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:16:30,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 571 transitions. [2022-11-25 18:16:30,373 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.488034188034188 [2022-11-25 18:16:30,373 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 571 transitions. [2022-11-25 18:16:30,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 571 transitions. [2022-11-25 18:16:30,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:16:30,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 571 transitions. [2022-11-25 18:16:30,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 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) [2022-11-25 18:16:30,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 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) [2022-11-25 18:16:30,382 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 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) [2022-11-25 18:16:30,382 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 52 flow. Second operand 5 states and 571 transitions. [2022-11-25 18:16:30,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 54 transitions, 230 flow [2022-11-25 18:16:30,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 54 transitions, 230 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:16:30,385 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 97 flow [2022-11-25 18:16:30,385 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=97, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2022-11-25 18:16:30,386 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -4 predicate places. [2022-11-25 18:16:30,386 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 97 flow [2022-11-25 18:16:30,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 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) [2022-11-25 18:16:30,387 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:16:30,387 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:16:30,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:16:30,388 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:16:30,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:16:30,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1544764604, now seen corresponding path program 1 times [2022-11-25 18:16:30,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:16:30,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762011537] [2022-11-25 18:16:30,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:16:30,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:16:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:16:31,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:16:31,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:16:31,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762011537] [2022-11-25 18:16:31,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762011537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:16:31,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:16:31,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:16:31,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108013921] [2022-11-25 18:16:31,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:16:31,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:16:31,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:16:31,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:16:31,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:16:31,518 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 234 [2022-11-25 18:16:31,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 97 flow. Second operand has 7 states, 7 states have (on average 95.57142857142857) internal successors, (669), 7 states have internal predecessors, (669), 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) [2022-11-25 18:16:31,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:16:31,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 234 [2022-11-25 18:16:31,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:16:31,960 INFO L130 PetriNetUnfolder]: 1658/2557 cut-off events. [2022-11-25 18:16:31,961 INFO L131 PetriNetUnfolder]: For 976/976 co-relation queries the response was YES. [2022-11-25 18:16:31,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6237 conditions, 2557 events. 1658/2557 cut-off events. For 976/976 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 14112 event pairs, 366 based on Foata normal form. 153/2710 useless extension candidates. Maximal degree in co-relation 6230. Up to 1014 conditions per place. [2022-11-25 18:16:31,978 INFO L137 encePairwiseOnDemand]: 228/234 looper letters, 47 selfloop transitions, 8 changer transitions 3/60 dead transitions. [2022-11-25 18:16:31,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 60 transitions, 315 flow [2022-11-25 18:16:31,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:16:31,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:16:31,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 713 transitions. [2022-11-25 18:16:31,981 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4352869352869353 [2022-11-25 18:16:31,981 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 713 transitions. [2022-11-25 18:16:31,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 713 transitions. [2022-11-25 18:16:31,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:16:31,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 713 transitions. [2022-11-25 18:16:31,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 101.85714285714286) internal successors, (713), 7 states have internal predecessors, (713), 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) [2022-11-25 18:16:31,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 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) [2022-11-25 18:16:31,988 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 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) [2022-11-25 18:16:31,988 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 97 flow. Second operand 7 states and 713 transitions. [2022-11-25 18:16:31,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 60 transitions, 315 flow [2022-11-25 18:16:31,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 60 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:16:31,993 INFO L231 Difference]: Finished difference. Result has 47 places, 27 transitions, 119 flow [2022-11-25 18:16:31,993 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=119, PETRI_PLACES=47, PETRI_TRANSITIONS=27} [2022-11-25 18:16:31,994 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2022-11-25 18:16:31,994 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 27 transitions, 119 flow [2022-11-25 18:16:31,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 95.57142857142857) internal successors, (669), 7 states have internal predecessors, (669), 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) [2022-11-25 18:16:31,995 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:16:31,995 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:16:31,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:16:31,995 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:16:31,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:16:31,996 INFO L85 PathProgramCache]: Analyzing trace with hash 577912935, now seen corresponding path program 1 times [2022-11-25 18:16:31,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:16:31,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960711975] [2022-11-25 18:16:31,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:16:31,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:16:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:16:32,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:16:32,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:16:32,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960711975] [2022-11-25 18:16:32,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960711975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:16:32,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:16:32,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:16:32,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433049905] [2022-11-25 18:16:32,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:16:32,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:16:32,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:16:32,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:16:32,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:16:32,122 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 234 [2022-11-25 18:16:32,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 27 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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) [2022-11-25 18:16:32,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:16:32,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 234 [2022-11-25 18:16:32,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:16:32,424 INFO L130 PetriNetUnfolder]: 1511/2293 cut-off events. [2022-11-25 18:16:32,424 INFO L131 PetriNetUnfolder]: For 1487/1487 co-relation queries the response was YES. [2022-11-25 18:16:32,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5849 conditions, 2293 events. 1511/2293 cut-off events. For 1487/1487 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 12013 event pairs, 476 based on Foata normal form. 54/2337 useless extension candidates. Maximal degree in co-relation 5839. Up to 1819 conditions per place. [2022-11-25 18:16:32,441 INFO L137 encePairwiseOnDemand]: 230/234 looper letters, 27 selfloop transitions, 5 changer transitions 13/47 dead transitions. [2022-11-25 18:16:32,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 261 flow [2022-11-25 18:16:32,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:16:32,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:16:32,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 589 transitions. [2022-11-25 18:16:32,444 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5034188034188034 [2022-11-25 18:16:32,444 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 589 transitions. [2022-11-25 18:16:32,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 589 transitions. [2022-11-25 18:16:32,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:16:32,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 589 transitions. [2022-11-25 18:16:32,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 117.8) internal successors, (589), 5 states have internal predecessors, (589), 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) [2022-11-25 18:16:32,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 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) [2022-11-25 18:16:32,449 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 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) [2022-11-25 18:16:32,449 INFO L175 Difference]: Start difference. First operand has 47 places, 27 transitions, 119 flow. Second operand 5 states and 589 transitions. [2022-11-25 18:16:32,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 261 flow [2022-11-25 18:16:32,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 47 transitions, 246 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-25 18:16:32,458 INFO L231 Difference]: Finished difference. Result has 48 places, 27 transitions, 127 flow [2022-11-25 18:16:32,458 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=127, PETRI_PLACES=48, PETRI_TRANSITIONS=27} [2022-11-25 18:16:32,459 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2022-11-25 18:16:32,459 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 27 transitions, 127 flow [2022-11-25 18:16:32,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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) [2022-11-25 18:16:32,460 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:16:32,460 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:16:32,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:16:32,460 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:16:32,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:16:32,461 INFO L85 PathProgramCache]: Analyzing trace with hash -643148194, now seen corresponding path program 1 times [2022-11-25 18:16:32,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:16:32,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306654041] [2022-11-25 18:16:32,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:16:32,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:16:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:16:32,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:16:32,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:16:32,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306654041] [2022-11-25 18:16:32,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306654041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:16:32,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:16:32,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:16:32,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433814308] [2022-11-25 18:16:32,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:16:32,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:16:32,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:16:32,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:16:32,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:16:32,637 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 234 [2022-11-25 18:16:32,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 27 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 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) [2022-11-25 18:16:32,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:16:32,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 234 [2022-11-25 18:16:32,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:16:33,158 INFO L130 PetriNetUnfolder]: 3291/4689 cut-off events. [2022-11-25 18:16:33,158 INFO L131 PetriNetUnfolder]: For 3732/3732 co-relation queries the response was YES. [2022-11-25 18:16:33,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11894 conditions, 4689 events. 3291/4689 cut-off events. For 3732/3732 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 21879 event pairs, 1398 based on Foata normal form. 216/4905 useless extension candidates. Maximal degree in co-relation 11882. Up to 3223 conditions per place. [2022-11-25 18:16:33,188 INFO L137 encePairwiseOnDemand]: 230/234 looper letters, 54 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2022-11-25 18:16:33,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 59 transitions, 339 flow [2022-11-25 18:16:33,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:16:33,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:16:33,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 571 transitions. [2022-11-25 18:16:33,191 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.488034188034188 [2022-11-25 18:16:33,191 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 571 transitions. [2022-11-25 18:16:33,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 571 transitions. [2022-11-25 18:16:33,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:16:33,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 571 transitions. [2022-11-25 18:16:33,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 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) [2022-11-25 18:16:33,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 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) [2022-11-25 18:16:33,196 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 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) [2022-11-25 18:16:33,196 INFO L175 Difference]: Start difference. First operand has 48 places, 27 transitions, 127 flow. Second operand 5 states and 571 transitions. [2022-11-25 18:16:33,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 59 transitions, 339 flow [2022-11-25 18:16:33,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 59 transitions, 311 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-11-25 18:16:33,220 INFO L231 Difference]: Finished difference. Result has 48 places, 29 transitions, 139 flow [2022-11-25 18:16:33,220 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=139, PETRI_PLACES=48, PETRI_TRANSITIONS=29} [2022-11-25 18:16:33,221 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2022-11-25 18:16:33,221 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 29 transitions, 139 flow [2022-11-25 18:16:33,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 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) [2022-11-25 18:16:33,222 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:16:33,222 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:16:33,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:16:33,223 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:16:33,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:16:33,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1053515408, now seen corresponding path program 1 times [2022-11-25 18:16:33,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:16:33,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428326295] [2022-11-25 18:16:33,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:16:33,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:16:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:16:33,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:16:33,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:16:33,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428326295] [2022-11-25 18:16:33,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428326295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:16:33,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:16:33,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:16:33,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344347510] [2022-11-25 18:16:33,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:16:33,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:16:33,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:16:33,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:16:33,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:16:34,100 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 234 [2022-11-25 18:16:34,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 29 transitions, 139 flow. Second operand has 7 states, 7 states have (on average 95.71428571428571) internal successors, (670), 7 states have internal predecessors, (670), 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) [2022-11-25 18:16:34,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:16:34,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 234 [2022-11-25 18:16:34,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:16:34,625 INFO L130 PetriNetUnfolder]: 2092/3265 cut-off events. [2022-11-25 18:16:34,625 INFO L131 PetriNetUnfolder]: For 2346/2346 co-relation queries the response was YES. [2022-11-25 18:16:34,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8461 conditions, 3265 events. 2092/3265 cut-off events. For 2346/2346 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 19544 event pairs, 789 based on Foata normal form. 90/3355 useless extension candidates. Maximal degree in co-relation 8449. Up to 1400 conditions per place. [2022-11-25 18:16:34,651 INFO L137 encePairwiseOnDemand]: 228/234 looper letters, 47 selfloop transitions, 11 changer transitions 2/62 dead transitions. [2022-11-25 18:16:34,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 62 transitions, 378 flow [2022-11-25 18:16:34,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:16:34,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:16:34,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 714 transitions. [2022-11-25 18:16:34,654 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2022-11-25 18:16:34,654 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 714 transitions. [2022-11-25 18:16:34,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 714 transitions. [2022-11-25 18:16:34,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:16:34,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 714 transitions. [2022-11-25 18:16:34,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 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) [2022-11-25 18:16:34,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 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) [2022-11-25 18:16:34,660 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 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) [2022-11-25 18:16:34,661 INFO L175 Difference]: Start difference. First operand has 48 places, 29 transitions, 139 flow. Second operand 7 states and 714 transitions. [2022-11-25 18:16:34,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 62 transitions, 378 flow [2022-11-25 18:16:34,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 62 transitions, 365 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-25 18:16:34,674 INFO L231 Difference]: Finished difference. Result has 57 places, 35 transitions, 206 flow [2022-11-25 18:16:34,675 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=206, PETRI_PLACES=57, PETRI_TRANSITIONS=35} [2022-11-25 18:16:34,675 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2022-11-25 18:16:34,675 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 35 transitions, 206 flow [2022-11-25 18:16:34,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 95.71428571428571) internal successors, (670), 7 states have internal predecessors, (670), 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) [2022-11-25 18:16:34,676 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:16:34,676 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:16:34,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:16:34,677 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:16:34,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:16:34,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1369309995, now seen corresponding path program 1 times [2022-11-25 18:16:34,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:16:34,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137776392] [2022-11-25 18:16:34,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:16:34,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:16:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:16:35,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:16:35,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:16:35,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137776392] [2022-11-25 18:16:35,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137776392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:16:35,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:16:35,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:16:35,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818591609] [2022-11-25 18:16:35,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:16:35,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:16:35,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:16:35,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:16:35,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:16:35,550 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 234 [2022-11-25 18:16:35,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 35 transitions, 206 flow. Second operand has 8 states, 8 states have (on average 92.625) internal successors, (741), 8 states have internal predecessors, (741), 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) [2022-11-25 18:16:35,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:16:35,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 234 [2022-11-25 18:16:35,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:16:36,173 INFO L130 PetriNetUnfolder]: 2679/4043 cut-off events. [2022-11-25 18:16:36,174 INFO L131 PetriNetUnfolder]: For 3577/3577 co-relation queries the response was YES. [2022-11-25 18:16:36,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10593 conditions, 4043 events. 2679/4043 cut-off events. For 3577/3577 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 23955 event pairs, 1506 based on Foata normal form. 36/4079 useless extension candidates. Maximal degree in co-relation 10577. Up to 2772 conditions per place. [2022-11-25 18:16:36,211 INFO L137 encePairwiseOnDemand]: 228/234 looper letters, 52 selfloop transitions, 9 changer transitions 0/63 dead transitions. [2022-11-25 18:16:36,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 63 transitions, 424 flow [2022-11-25 18:16:36,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:16:36,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:16:36,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 687 transitions. [2022-11-25 18:16:36,214 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4194139194139194 [2022-11-25 18:16:36,214 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 687 transitions. [2022-11-25 18:16:36,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 687 transitions. [2022-11-25 18:16:36,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:16:36,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 687 transitions. [2022-11-25 18:16:36,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 98.14285714285714) internal successors, (687), 7 states have internal predecessors, (687), 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) [2022-11-25 18:16:36,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 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) [2022-11-25 18:16:36,221 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 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) [2022-11-25 18:16:36,221 INFO L175 Difference]: Start difference. First operand has 57 places, 35 transitions, 206 flow. Second operand 7 states and 687 transitions. [2022-11-25 18:16:36,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 63 transitions, 424 flow [2022-11-25 18:16:36,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 398 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-11-25 18:16:36,262 INFO L231 Difference]: Finished difference. Result has 58 places, 38 transitions, 232 flow [2022-11-25 18:16:36,262 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=232, PETRI_PLACES=58, PETRI_TRANSITIONS=38} [2022-11-25 18:16:36,263 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2022-11-25 18:16:36,264 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 38 transitions, 232 flow [2022-11-25 18:16:36,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 92.625) internal successors, (741), 8 states have internal predecessors, (741), 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) [2022-11-25 18:16:36,264 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:16:36,265 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:16:36,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:16:36,265 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:16:36,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:16:36,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1235019169, now seen corresponding path program 1 times [2022-11-25 18:16:36,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:16:36,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121077487] [2022-11-25 18:16:36,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:16:36,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:16:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:16:36,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:16:36,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:16:36,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121077487] [2022-11-25 18:16:36,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121077487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:16:36,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:16:36,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:16:36,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931810794] [2022-11-25 18:16:36,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:16:36,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:16:36,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:16:36,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:16:36,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:16:36,479 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 234 [2022-11-25 18:16:36,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 38 transitions, 232 flow. Second operand has 6 states, 6 states have (on average 103.16666666666667) internal successors, (619), 6 states have internal predecessors, (619), 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) [2022-11-25 18:16:36,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:16:36,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 234 [2022-11-25 18:16:36,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:16:37,446 INFO L130 PetriNetUnfolder]: 6083/8726 cut-off events. [2022-11-25 18:16:37,447 INFO L131 PetriNetUnfolder]: For 6105/6105 co-relation queries the response was YES. [2022-11-25 18:16:37,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21663 conditions, 8726 events. 6083/8726 cut-off events. For 6105/6105 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 45758 event pairs, 1446 based on Foata normal form. 486/9212 useless extension candidates. Maximal degree in co-relation 21648. Up to 2924 conditions per place. [2022-11-25 18:16:37,493 INFO L137 encePairwiseOnDemand]: 229/234 looper letters, 59 selfloop transitions, 7 changer transitions 9/75 dead transitions. [2022-11-25 18:16:37,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 75 transitions, 504 flow [2022-11-25 18:16:37,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:16:37,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:16:37,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 665 transitions. [2022-11-25 18:16:37,496 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47364672364672367 [2022-11-25 18:16:37,496 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 665 transitions. [2022-11-25 18:16:37,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 665 transitions. [2022-11-25 18:16:37,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:16:37,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 665 transitions. [2022-11-25 18:16:37,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.83333333333333) internal successors, (665), 6 states have internal predecessors, (665), 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) [2022-11-25 18:16:37,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 234.0) internal successors, (1638), 7 states have internal predecessors, (1638), 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) [2022-11-25 18:16:37,501 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 234.0) internal successors, (1638), 7 states have internal predecessors, (1638), 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) [2022-11-25 18:16:37,502 INFO L175 Difference]: Start difference. First operand has 58 places, 38 transitions, 232 flow. Second operand 6 states and 665 transitions. [2022-11-25 18:16:37,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 75 transitions, 504 flow [2022-11-25 18:16:37,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 75 transitions, 492 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-25 18:16:37,510 INFO L231 Difference]: Finished difference. Result has 63 places, 36 transitions, 220 flow [2022-11-25 18:16:37,510 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=63, PETRI_TRANSITIONS=36} [2022-11-25 18:16:37,514 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 20 predicate places. [2022-11-25 18:16:37,514 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 36 transitions, 220 flow [2022-11-25 18:16:37,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 103.16666666666667) internal successors, (619), 6 states have internal predecessors, (619), 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) [2022-11-25 18:16:37,515 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:16:37,515 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:16:37,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:16:37,516 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:16:37,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:16:37,516 INFO L85 PathProgramCache]: Analyzing trace with hash -901278649, now seen corresponding path program 2 times [2022-11-25 18:16:37,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:16:37,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614398762] [2022-11-25 18:16:37,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:16:37,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:16:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:16:38,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:16:38,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:16:38,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614398762] [2022-11-25 18:16:38,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614398762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:16:38,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:16:38,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:16:38,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435521568] [2022-11-25 18:16:38,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:16:38,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:16:38,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:16:38,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:16:38,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:16:38,503 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 234 [2022-11-25 18:16:38,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 36 transitions, 220 flow. Second operand has 8 states, 8 states have (on average 91.625) internal successors, (733), 8 states have internal predecessors, (733), 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) [2022-11-25 18:16:38,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:16:38,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 234 [2022-11-25 18:16:38,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:16:39,063 INFO L130 PetriNetUnfolder]: 1536/2473 cut-off events. [2022-11-25 18:16:39,063 INFO L131 PetriNetUnfolder]: For 2953/2953 co-relation queries the response was YES. [2022-11-25 18:16:39,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6739 conditions, 2473 events. 1536/2473 cut-off events. For 2953/2953 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 14734 event pairs, 1061 based on Foata normal form. 36/2509 useless extension candidates. Maximal degree in co-relation 6722. Up to 978 conditions per place. [2022-11-25 18:16:39,076 INFO L137 encePairwiseOnDemand]: 227/234 looper letters, 63 selfloop transitions, 12 changer transitions 10/87 dead transitions. [2022-11-25 18:16:39,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 87 transitions, 649 flow [2022-11-25 18:16:39,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:16:39,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 18:16:39,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 874 transitions. [2022-11-25 18:16:39,080 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41500474833808165 [2022-11-25 18:16:39,080 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 874 transitions. [2022-11-25 18:16:39,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 874 transitions. [2022-11-25 18:16:39,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:16:39,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 874 transitions. [2022-11-25 18:16:39,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 97.11111111111111) internal successors, (874), 9 states have internal predecessors, (874), 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) [2022-11-25 18:16:39,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 234.0) internal successors, (2340), 10 states have internal predecessors, (2340), 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) [2022-11-25 18:16:39,088 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 234.0) internal successors, (2340), 10 states have internal predecessors, (2340), 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) [2022-11-25 18:16:39,088 INFO L175 Difference]: Start difference. First operand has 63 places, 36 transitions, 220 flow. Second operand 9 states and 874 transitions. [2022-11-25 18:16:39,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 87 transitions, 649 flow [2022-11-25 18:16:39,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 87 transitions, 629 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-25 18:16:39,098 INFO L231 Difference]: Finished difference. Result has 70 places, 46 transitions, 324 flow [2022-11-25 18:16:39,098 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=324, PETRI_PLACES=70, PETRI_TRANSITIONS=46} [2022-11-25 18:16:39,100 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 27 predicate places. [2022-11-25 18:16:39,100 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 46 transitions, 324 flow [2022-11-25 18:16:39,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 91.625) internal successors, (733), 8 states have internal predecessors, (733), 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) [2022-11-25 18:16:39,102 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:16:39,103 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:16:39,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:16:39,104 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:16:39,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:16:39,105 INFO L85 PathProgramCache]: Analyzing trace with hash -648004603, now seen corresponding path program 1 times [2022-11-25 18:16:39,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:16:39,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175020149] [2022-11-25 18:16:39,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:16:39,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:16:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:16:39,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:16:39,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:16:39,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175020149] [2022-11-25 18:16:39,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175020149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:16:39,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:16:39,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:16:39,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308448075] [2022-11-25 18:16:39,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:16:39,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:16:39,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:16:39,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:16:39,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:16:40,177 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 234 [2022-11-25 18:16:40,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 46 transitions, 324 flow. Second operand has 8 states, 8 states have (on average 91.75) internal successors, (734), 8 states have internal predecessors, (734), 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) [2022-11-25 18:16:40,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:16:40,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 234 [2022-11-25 18:16:40,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:16:40,755 INFO L130 PetriNetUnfolder]: 1402/2309 cut-off events. [2022-11-25 18:16:40,756 INFO L131 PetriNetUnfolder]: For 2794/2794 co-relation queries the response was YES. [2022-11-25 18:16:40,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6373 conditions, 2309 events. 1402/2309 cut-off events. For 2794/2794 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 13798 event pairs, 772 based on Foata normal form. 48/2357 useless extension candidates. Maximal degree in co-relation 6352. Up to 1791 conditions per place. [2022-11-25 18:16:40,771 INFO L137 encePairwiseOnDemand]: 228/234 looper letters, 26 selfloop transitions, 9 changer transitions 32/69 dead transitions. [2022-11-25 18:16:40,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 69 transitions, 548 flow [2022-11-25 18:16:40,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 18:16:40,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 18:16:40,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 767 transitions. [2022-11-25 18:16:40,775 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2022-11-25 18:16:40,776 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 767 transitions. [2022-11-25 18:16:40,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 767 transitions. [2022-11-25 18:16:40,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:16:40,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 767 transitions. [2022-11-25 18:16:40,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 95.875) internal successors, (767), 8 states have internal predecessors, (767), 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) [2022-11-25 18:16:40,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 234.0) internal successors, (2106), 9 states have internal predecessors, (2106), 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) [2022-11-25 18:16:40,783 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 234.0) internal successors, (2106), 9 states have internal predecessors, (2106), 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) [2022-11-25 18:16:40,783 INFO L175 Difference]: Start difference. First operand has 70 places, 46 transitions, 324 flow. Second operand 8 states and 767 transitions. [2022-11-25 18:16:40,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 69 transitions, 548 flow [2022-11-25 18:16:40,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 69 transitions, 535 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-25 18:16:40,793 INFO L231 Difference]: Finished difference. Result has 72 places, 34 transitions, 229 flow [2022-11-25 18:16:40,794 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=229, PETRI_PLACES=72, PETRI_TRANSITIONS=34} [2022-11-25 18:16:40,795 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2022-11-25 18:16:40,795 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 34 transitions, 229 flow [2022-11-25 18:16:40,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 91.75) internal successors, (734), 8 states have internal predecessors, (734), 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) [2022-11-25 18:16:40,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:16:40,796 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:16:40,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 18:16:40,797 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:16:40,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:16:40,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1185580362, now seen corresponding path program 1 times [2022-11-25 18:16:40,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:16:40,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142771853] [2022-11-25 18:16:40,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:16:40,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:16:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:16:40,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:16:40,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:16:40,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142771853] [2022-11-25 18:16:40,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142771853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:16:40,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:16:40,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:16:40,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500583966] [2022-11-25 18:16:40,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:16:40,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:16:40,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:16:40,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:16:40,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:16:40,970 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 234 [2022-11-25 18:16:40,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 34 transitions, 229 flow. Second operand has 6 states, 6 states have (on average 103.33333333333333) internal successors, (620), 6 states have internal predecessors, (620), 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) [2022-11-25 18:16:40,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:16:40,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 234 [2022-11-25 18:16:40,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:16:41,402 INFO L130 PetriNetUnfolder]: 2343/3473 cut-off events. [2022-11-25 18:16:41,402 INFO L131 PetriNetUnfolder]: For 2860/2860 co-relation queries the response was YES. [2022-11-25 18:16:41,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9256 conditions, 3473 events. 2343/3473 cut-off events. For 2860/2860 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 17150 event pairs, 807 based on Foata normal form. 108/3581 useless extension candidates. Maximal degree in co-relation 9237. Up to 1787 conditions per place. [2022-11-25 18:16:41,420 INFO L137 encePairwiseOnDemand]: 229/234 looper letters, 37 selfloop transitions, 7 changer transitions 28/72 dead transitions. [2022-11-25 18:16:41,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 72 transitions, 506 flow [2022-11-25 18:16:41,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:16:41,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:16:41,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 667 transitions. [2022-11-25 18:16:41,424 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47507122507122507 [2022-11-25 18:16:41,424 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 667 transitions. [2022-11-25 18:16:41,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 667 transitions. [2022-11-25 18:16:41,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:16:41,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 667 transitions. [2022-11-25 18:16:41,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 111.16666666666667) internal successors, (667), 6 states have internal predecessors, (667), 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) [2022-11-25 18:16:41,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 234.0) internal successors, (1638), 7 states have internal predecessors, (1638), 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) [2022-11-25 18:16:41,429 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 234.0) internal successors, (1638), 7 states have internal predecessors, (1638), 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) [2022-11-25 18:16:41,430 INFO L175 Difference]: Start difference. First operand has 72 places, 34 transitions, 229 flow. Second operand 6 states and 667 transitions. [2022-11-25 18:16:41,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 72 transitions, 506 flow [2022-11-25 18:16:41,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 434 flow, removed 2 selfloop flow, removed 18 redundant places. [2022-11-25 18:16:41,445 INFO L231 Difference]: Finished difference. Result has 59 places, 29 transitions, 172 flow [2022-11-25 18:16:41,445 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=172, PETRI_PLACES=59, PETRI_TRANSITIONS=29} [2022-11-25 18:16:41,445 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2022-11-25 18:16:41,446 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 29 transitions, 172 flow [2022-11-25 18:16:41,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 103.33333333333333) internal successors, (620), 6 states have internal predecessors, (620), 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) [2022-11-25 18:16:41,446 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:16:41,446 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:16:41,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 18:16:41,447 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:16:41,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:16:41,447 INFO L85 PathProgramCache]: Analyzing trace with hash 938077552, now seen corresponding path program 1 times [2022-11-25 18:16:41,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:16:41,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702928205] [2022-11-25 18:16:41,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:16:41,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:16:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:16:41,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:16:41,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:16:41,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702928205] [2022-11-25 18:16:41,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702928205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:16:41,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:16:41,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:16:41,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11465686] [2022-11-25 18:16:41,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:16:41,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:16:41,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:16:41,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:16:41,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:16:41,591 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 234 [2022-11-25 18:16:41,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 29 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 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) [2022-11-25 18:16:41,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:16:41,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 234 [2022-11-25 18:16:41,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:16:41,769 INFO L130 PetriNetUnfolder]: 724/1197 cut-off events. [2022-11-25 18:16:41,770 INFO L131 PetriNetUnfolder]: For 2078/2078 co-relation queries the response was YES. [2022-11-25 18:16:41,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3615 conditions, 1197 events. 724/1197 cut-off events. For 2078/2078 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 6233 event pairs, 238 based on Foata normal form. 48/1240 useless extension candidates. Maximal degree in co-relation 3600. Up to 855 conditions per place. [2022-11-25 18:16:41,776 INFO L137 encePairwiseOnDemand]: 227/234 looper letters, 38 selfloop transitions, 5 changer transitions 21/66 dead transitions. [2022-11-25 18:16:41,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 496 flow [2022-11-25 18:16:41,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:16:41,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:16:41,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 580 transitions. [2022-11-25 18:16:41,780 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49572649572649574 [2022-11-25 18:16:41,780 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 580 transitions. [2022-11-25 18:16:41,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 580 transitions. [2022-11-25 18:16:41,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:16:41,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 580 transitions. [2022-11-25 18:16:41,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 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) [2022-11-25 18:16:41,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 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) [2022-11-25 18:16:41,785 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 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) [2022-11-25 18:16:41,785 INFO L175 Difference]: Start difference. First operand has 59 places, 29 transitions, 172 flow. Second operand 5 states and 580 transitions. [2022-11-25 18:16:41,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 496 flow [2022-11-25 18:16:41,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 66 transitions, 447 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-11-25 18:16:41,790 INFO L231 Difference]: Finished difference. Result has 55 places, 33 transitions, 191 flow [2022-11-25 18:16:41,790 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=191, PETRI_PLACES=55, PETRI_TRANSITIONS=33} [2022-11-25 18:16:41,792 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2022-11-25 18:16:41,792 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 33 transitions, 191 flow [2022-11-25 18:16:41,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 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) [2022-11-25 18:16:41,793 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:16:41,793 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:16:41,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 18:16:41,793 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:16:41,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:16:41,794 INFO L85 PathProgramCache]: Analyzing trace with hash 700041943, now seen corresponding path program 1 times [2022-11-25 18:16:41,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:16:41,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719649174] [2022-11-25 18:16:41,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:16:41,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:16:41,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:16:41,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:16:41,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:16:41,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719649174] [2022-11-25 18:16:41,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719649174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:16:41,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:16:41,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:16:41,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807142159] [2022-11-25 18:16:41,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:16:41,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:16:41,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:16:41,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:16:41,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:16:41,934 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 234 [2022-11-25 18:16:41,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 33 transitions, 191 flow. Second operand has 5 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 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) [2022-11-25 18:16:41,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:16:41,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 234 [2022-11-25 18:16:41,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:16:42,097 INFO L130 PetriNetUnfolder]: 516/905 cut-off events. [2022-11-25 18:16:42,097 INFO L131 PetriNetUnfolder]: For 1765/1807 co-relation queries the response was YES. [2022-11-25 18:16:42,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3659 conditions, 905 events. 516/905 cut-off events. For 1765/1807 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4666 event pairs, 73 based on Foata normal form. 67/967 useless extension candidates. Maximal degree in co-relation 3645. Up to 606 conditions per place. [2022-11-25 18:16:42,103 INFO L137 encePairwiseOnDemand]: 227/234 looper letters, 46 selfloop transitions, 9 changer transitions 21/78 dead transitions. [2022-11-25 18:16:42,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 78 transitions, 613 flow [2022-11-25 18:16:42,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:16:42,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:16:42,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 696 transitions. [2022-11-25 18:16:42,106 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49572649572649574 [2022-11-25 18:16:42,106 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 696 transitions. [2022-11-25 18:16:42,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 696 transitions. [2022-11-25 18:16:42,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:16:42,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 696 transitions. [2022-11-25 18:16:42,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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) [2022-11-25 18:16:42,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 234.0) internal successors, (1638), 7 states have internal predecessors, (1638), 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) [2022-11-25 18:16:42,112 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 234.0) internal successors, (1638), 7 states have internal predecessors, (1638), 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) [2022-11-25 18:16:42,112 INFO L175 Difference]: Start difference. First operand has 55 places, 33 transitions, 191 flow. Second operand 6 states and 696 transitions. [2022-11-25 18:16:42,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 78 transitions, 613 flow [2022-11-25 18:16:42,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 78 transitions, 606 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-25 18:16:42,121 INFO L231 Difference]: Finished difference. Result has 59 places, 37 transitions, 256 flow [2022-11-25 18:16:42,121 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=59, PETRI_TRANSITIONS=37} [2022-11-25 18:16:42,122 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2022-11-25 18:16:42,122 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 37 transitions, 256 flow [2022-11-25 18:16:42,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 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) [2022-11-25 18:16:42,123 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:16:42,123 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:16:42,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 18:16:42,123 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:16:42,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:16:42,124 INFO L85 PathProgramCache]: Analyzing trace with hash 225761840, now seen corresponding path program 1 times [2022-11-25 18:16:42,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:16:42,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065600570] [2022-11-25 18:16:42,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:16:42,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:16:42,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:16:42,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:16:42,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:16:42,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065600570] [2022-11-25 18:16:42,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065600570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:16:42,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:16:42,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:16:42,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500623579] [2022-11-25 18:16:42,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:16:42,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:16:42,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:16:42,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:16:42,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:16:42,265 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 234 [2022-11-25 18:16:42,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 37 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 108.83333333333333) internal successors, (653), 6 states have internal predecessors, (653), 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) [2022-11-25 18:16:42,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:16:42,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 234 [2022-11-25 18:16:42,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:16:42,410 INFO L130 PetriNetUnfolder]: 294/566 cut-off events. [2022-11-25 18:16:42,410 INFO L131 PetriNetUnfolder]: For 1951/2045 co-relation queries the response was YES. [2022-11-25 18:16:42,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2866 conditions, 566 events. 294/566 cut-off events. For 1951/2045 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2733 event pairs, 17 based on Foata normal form. 77/638 useless extension candidates. Maximal degree in co-relation 2850. Up to 363 conditions per place. [2022-11-25 18:16:42,414 INFO L137 encePairwiseOnDemand]: 227/234 looper letters, 48 selfloop transitions, 13 changer transitions 17/80 dead transitions. [2022-11-25 18:16:42,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 80 transitions, 724 flow [2022-11-25 18:16:42,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:16:42,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:16:42,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 806 transitions. [2022-11-25 18:16:42,417 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2022-11-25 18:16:42,418 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 806 transitions. [2022-11-25 18:16:42,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 806 transitions. [2022-11-25 18:16:42,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:16:42,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 806 transitions. [2022-11-25 18:16:42,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 115.14285714285714) internal successors, (806), 7 states have internal predecessors, (806), 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) [2022-11-25 18:16:42,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 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) [2022-11-25 18:16:42,424 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 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) [2022-11-25 18:16:42,425 INFO L175 Difference]: Start difference. First operand has 59 places, 37 transitions, 256 flow. Second operand 7 states and 806 transitions. [2022-11-25 18:16:42,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 80 transitions, 724 flow [2022-11-25 18:16:42,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 80 transitions, 662 flow, removed 26 selfloop flow, removed 4 redundant places. [2022-11-25 18:16:42,434 INFO L231 Difference]: Finished difference. Result has 62 places, 41 transitions, 306 flow [2022-11-25 18:16:42,435 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=306, PETRI_PLACES=62, PETRI_TRANSITIONS=41} [2022-11-25 18:16:42,435 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2022-11-25 18:16:42,435 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 41 transitions, 306 flow [2022-11-25 18:16:42,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.83333333333333) internal successors, (653), 6 states have internal predecessors, (653), 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) [2022-11-25 18:16:42,436 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:16:42,436 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:16:42,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 18:16:42,437 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:16:42,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:16:42,437 INFO L85 PathProgramCache]: Analyzing trace with hash 135162083, now seen corresponding path program 1 times [2022-11-25 18:16:42,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:16:42,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918633676] [2022-11-25 18:16:42,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:16:42,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:16:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:16:42,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:16:42,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:16:42,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918633676] [2022-11-25 18:16:42,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918633676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:16:42,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:16:42,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:16:42,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644390395] [2022-11-25 18:16:42,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:16:42,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:16:42,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:16:42,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:16:42,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:16:42,571 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 234 [2022-11-25 18:16:42,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 41 transitions, 306 flow. Second operand has 5 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 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) [2022-11-25 18:16:42,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:16:42,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 234 [2022-11-25 18:16:42,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:16:42,792 INFO L130 PetriNetUnfolder]: 551/1020 cut-off events. [2022-11-25 18:16:42,792 INFO L131 PetriNetUnfolder]: For 3221/3221 co-relation queries the response was YES. [2022-11-25 18:16:42,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4824 conditions, 1020 events. 551/1020 cut-off events. For 3221/3221 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5008 event pairs, 74 based on Foata normal form. 24/1044 useless extension candidates. Maximal degree in co-relation 4807. Up to 585 conditions per place. [2022-11-25 18:16:42,799 INFO L137 encePairwiseOnDemand]: 226/234 looper letters, 56 selfloop transitions, 10 changer transitions 13/79 dead transitions. [2022-11-25 18:16:42,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 79 transitions, 775 flow [2022-11-25 18:16:42,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:16:42,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:16:42,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 756 transitions. [2022-11-25 18:16:42,802 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2022-11-25 18:16:42,802 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 756 transitions. [2022-11-25 18:16:42,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 756 transitions. [2022-11-25 18:16:42,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:16:42,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 756 transitions. [2022-11-25 18:16:42,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.0) internal successors, (756), 7 states have internal predecessors, (756), 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) [2022-11-25 18:16:42,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 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) [2022-11-25 18:16:42,808 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 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) [2022-11-25 18:16:42,809 INFO L175 Difference]: Start difference. First operand has 62 places, 41 transitions, 306 flow. Second operand 7 states and 756 transitions. [2022-11-25 18:16:42,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 79 transitions, 775 flow [2022-11-25 18:16:42,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 79 transitions, 651 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-25 18:16:42,821 INFO L231 Difference]: Finished difference. Result has 65 places, 46 transitions, 319 flow [2022-11-25 18:16:42,821 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=319, PETRI_PLACES=65, PETRI_TRANSITIONS=46} [2022-11-25 18:16:42,821 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 22 predicate places. [2022-11-25 18:16:42,822 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 46 transitions, 319 flow [2022-11-25 18:16:42,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 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) [2022-11-25 18:16:42,822 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:16:42,822 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:16:42,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 18:16:42,823 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:16:42,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:16:42,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1095172959, now seen corresponding path program 2 times [2022-11-25 18:16:42,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:16:42,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005681707] [2022-11-25 18:16:42,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:16:42,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:16:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:16:42,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:16:42,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:16:42,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005681707] [2022-11-25 18:16:42,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005681707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:16:42,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:16:42,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:16:42,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071703610] [2022-11-25 18:16:42,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:16:42,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:16:42,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:16:42,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:16:42,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:16:42,982 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 234 [2022-11-25 18:16:42,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 46 transitions, 319 flow. Second operand has 7 states, 7 states have (on average 108.57142857142857) internal successors, (760), 7 states have internal predecessors, (760), 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) [2022-11-25 18:16:42,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:16:42,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 234 [2022-11-25 18:16:42,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:16:43,143 INFO L130 PetriNetUnfolder]: 325/637 cut-off events. [2022-11-25 18:16:43,143 INFO L131 PetriNetUnfolder]: For 1818/2118 co-relation queries the response was YES. [2022-11-25 18:16:43,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2844 conditions, 637 events. 325/637 cut-off events. For 1818/2118 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3383 event pairs, 6 based on Foata normal form. 125/737 useless extension candidates. Maximal degree in co-relation 2825. Up to 242 conditions per place. [2022-11-25 18:16:43,147 INFO L137 encePairwiseOnDemand]: 227/234 looper letters, 50 selfloop transitions, 18 changer transitions 9/81 dead transitions. [2022-11-25 18:16:43,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 81 transitions, 759 flow [2022-11-25 18:16:43,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 18:16:43,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 18:16:43,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 904 transitions. [2022-11-25 18:16:43,150 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4829059829059829 [2022-11-25 18:16:43,151 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 904 transitions. [2022-11-25 18:16:43,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 904 transitions. [2022-11-25 18:16:43,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:16:43,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 904 transitions. [2022-11-25 18:16:43,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 113.0) internal successors, (904), 8 states have internal predecessors, (904), 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) [2022-11-25 18:16:43,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 234.0) internal successors, (2106), 9 states have internal predecessors, (2106), 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) [2022-11-25 18:16:43,160 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 234.0) internal successors, (2106), 9 states have internal predecessors, (2106), 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) [2022-11-25 18:16:43,160 INFO L175 Difference]: Start difference. First operand has 65 places, 46 transitions, 319 flow. Second operand 8 states and 904 transitions. [2022-11-25 18:16:43,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 81 transitions, 759 flow [2022-11-25 18:16:43,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 81 transitions, 737 flow, removed 11 selfloop flow, removed 2 redundant places. [2022-11-25 18:16:43,168 INFO L231 Difference]: Finished difference. Result has 71 places, 47 transitions, 365 flow [2022-11-25 18:16:43,168 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=365, PETRI_PLACES=71, PETRI_TRANSITIONS=47} [2022-11-25 18:16:43,169 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2022-11-25 18:16:43,169 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 47 transitions, 365 flow [2022-11-25 18:16:43,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.57142857142857) internal successors, (760), 7 states have internal predecessors, (760), 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) [2022-11-25 18:16:43,169 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:16:43,170 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:16:43,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 18:16:43,170 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:16:43,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:16:43,170 INFO L85 PathProgramCache]: Analyzing trace with hash 789120297, now seen corresponding path program 1 times [2022-11-25 18:16:43,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:16:43,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550080759] [2022-11-25 18:16:43,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:16:43,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:16:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:16:43,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:16:43,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:16:43,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550080759] [2022-11-25 18:16:43,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550080759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:16:43,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:16:43,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:16:43,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610871145] [2022-11-25 18:16:43,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:16:43,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:16:43,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:16:43,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:16:43,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:16:43,308 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 234 [2022-11-25 18:16:43,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 47 transitions, 365 flow. Second operand has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 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) [2022-11-25 18:16:43,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:16:43,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 234 [2022-11-25 18:16:43,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:16:43,483 INFO L130 PetriNetUnfolder]: 430/833 cut-off events. [2022-11-25 18:16:43,483 INFO L131 PetriNetUnfolder]: For 2876/2890 co-relation queries the response was YES. [2022-11-25 18:16:43,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4083 conditions, 833 events. 430/833 cut-off events. For 2876/2890 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4370 event pairs, 73 based on Foata normal form. 3/826 useless extension candidates. Maximal degree in co-relation 4062. Up to 427 conditions per place. [2022-11-25 18:16:43,487 INFO L137 encePairwiseOnDemand]: 230/234 looper letters, 0 selfloop transitions, 0 changer transitions 74/74 dead transitions. [2022-11-25 18:16:43,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 74 transitions, 733 flow [2022-11-25 18:16:43,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:16:43,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:16:43,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 570 transitions. [2022-11-25 18:16:43,491 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2022-11-25 18:16:43,491 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 570 transitions. [2022-11-25 18:16:43,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 570 transitions. [2022-11-25 18:16:43,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:16:43,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 570 transitions. [2022-11-25 18:16:43,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 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) [2022-11-25 18:16:43,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 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) [2022-11-25 18:16:43,512 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 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) [2022-11-25 18:16:43,512 INFO L175 Difference]: Start difference. First operand has 71 places, 47 transitions, 365 flow. Second operand 5 states and 570 transitions. [2022-11-25 18:16:43,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 74 transitions, 733 flow [2022-11-25 18:16:43,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 74 transitions, 611 flow, removed 32 selfloop flow, removed 6 redundant places. [2022-11-25 18:16:43,523 INFO L231 Difference]: Finished difference. Result has 67 places, 0 transitions, 0 flow [2022-11-25 18:16:43,523 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=67, PETRI_TRANSITIONS=0} [2022-11-25 18:16:43,523 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2022-11-25 18:16:43,523 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 0 transitions, 0 flow [2022-11-25 18:16:43,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 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) [2022-11-25 18:16:43,526 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2022-11-25 18:16:43,527 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2022-11-25 18:16:43,527 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2022-11-25 18:16:43,529 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2022-11-25 18:16:43,529 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2022-11-25 18:16:43,529 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2022-11-25 18:16:43,529 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2022-11-25 18:16:43,529 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2022-11-25 18:16:43,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (5 of 14 remaining) [2022-11-25 18:16:43,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (4 of 14 remaining) [2022-11-25 18:16:43,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 14 remaining) [2022-11-25 18:16:43,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 14 remaining) [2022-11-25 18:16:43,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 14 remaining) [2022-11-25 18:16:43,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 14 remaining) [2022-11-25 18:16:43,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 18:16:43,531 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:16:43,535 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 18:16:43,536 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 18:16:43,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:16:43 BasicIcfg [2022-11-25 18:16:43,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 18:16:43,539 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 18:16:43,539 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 18:16:43,540 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 18:16:43,540 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:16:24" (3/4) ... [2022-11-25 18:16:43,544 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 18:16:43,551 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-25 18:16:43,551 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-25 18:16:43,551 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-25 18:16:43,551 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2022-11-25 18:16:43,558 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-11-25 18:16:43,558 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 18:16:43,559 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-25 18:16:43,559 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 18:16:43,600 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f89f100-b784-43e2-91c4-657e99462b94/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 18:16:43,600 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 18:16:43,601 INFO L158 Benchmark]: Toolchain (without parser) took 20249.38ms. Allocated memory was 184.5MB in the beginning and 557.8MB in the end (delta: 373.3MB). Free memory was 137.3MB in the beginning and 359.4MB in the end (delta: -222.2MB). Peak memory consumption was 154.1MB. Max. memory is 16.1GB. [2022-11-25 18:16:43,601 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 127.9MB. Free memory is still 72.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:16:43,602 INFO L158 Benchmark]: CACSL2BoogieTranslator took 555.55ms. Allocated memory is still 184.5MB. Free memory was 137.1MB in the beginning and 112.7MB in the end (delta: 24.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-25 18:16:43,602 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.34ms. Allocated memory is still 184.5MB. Free memory was 112.7MB in the beginning and 110.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:16:43,602 INFO L158 Benchmark]: Boogie Preprocessor took 56.29ms. Allocated memory is still 184.5MB. Free memory was 110.6MB in the beginning and 109.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:16:43,603 INFO L158 Benchmark]: RCFGBuilder took 636.77ms. Allocated memory is still 184.5MB. Free memory was 109.2MB in the beginning and 147.7MB in the end (delta: -38.5MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2022-11-25 18:16:43,603 INFO L158 Benchmark]: TraceAbstraction took 18855.33ms. Allocated memory was 184.5MB in the beginning and 557.8MB in the end (delta: 373.3MB). Free memory was 146.6MB in the beginning and 362.6MB in the end (delta: -216.0MB). Peak memory consumption was 156.3MB. Max. memory is 16.1GB. [2022-11-25 18:16:43,603 INFO L158 Benchmark]: Witness Printer took 61.10ms. Allocated memory is still 557.8MB. Free memory was 362.6MB in the beginning and 359.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 18:16:43,605 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 127.9MB. Free memory is still 72.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 555.55ms. Allocated memory is still 184.5MB. Free memory was 137.1MB in the beginning and 112.7MB in the end (delta: 24.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.34ms. Allocated memory is still 184.5MB. Free memory was 112.7MB in the beginning and 110.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.29ms. Allocated memory is still 184.5MB. Free memory was 110.6MB in the beginning and 109.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 636.77ms. Allocated memory is still 184.5MB. Free memory was 109.2MB in the beginning and 147.7MB in the end (delta: -38.5MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. * TraceAbstraction took 18855.33ms. Allocated memory was 184.5MB in the beginning and 557.8MB in the end (delta: 373.3MB). Free memory was 146.6MB in the beginning and 362.6MB in the end (delta: -216.0MB). Peak memory consumption was 156.3MB. Max. memory is 16.1GB. * Witness Printer took 61.10ms. Allocated memory is still 557.8MB. Free memory was 362.6MB in the beginning and 359.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.8s, 121 PlacesBefore, 43 PlacesAfterwards, 110 TransitionsBefore, 31 TransitionsAfterwards, 2382 CoEnabledTransitionPairs, 5 FixpointIterations, 35 TrivialSequentialCompositions, 69 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 115 TotalNumberOfCompositions, 3802 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2322, independent: 2247, independent conditional: 0, independent unconditional: 2247, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1616, independent: 1581, independent conditional: 0, independent unconditional: 1581, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1616, independent: 1568, independent conditional: 0, independent unconditional: 1568, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 48, independent: 13, independent conditional: 0, independent unconditional: 13, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 133, independent: 43, independent conditional: 0, independent unconditional: 43, dependent: 90, dependent conditional: 0, dependent unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2322, independent: 666, independent conditional: 0, independent unconditional: 666, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 1616, unknown conditional: 0, unknown unconditional: 1616] , Statistics on independence cache: Total cache size (in pairs): 133, Positive cache size: 120, Positive conditional cache size: 0, Positive unconditional cache size: 120, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 788]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 148 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.7s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 9.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1579 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1247 mSDsluCounter, 447 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 354 mSDsCounter, 118 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4559 IncrementalHoareTripleChecker+Invalid, 4677 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 118 mSolverCounterUnsat, 93 mSDtfsCounter, 4559 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=365occurred in iteration=16, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 233 NumberOfCodeBlocks, 233 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 216 ConstructedInterpolants, 0 QuantifiedInterpolants, 2832 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 18:16:43,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f89f100-b784-43e2-91c4-657e99462b94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE