./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe008_power.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_6965a215-b230-4c77-be22-56a95f444851/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6965a215-b230-4c77-be22-56a95f444851/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_6965a215-b230-4c77-be22-56a95f444851/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6965a215-b230-4c77-be22-56a95f444851/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe008_power.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6965a215-b230-4c77-be22-56a95f444851/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_6965a215-b230-4c77-be22-56a95f444851/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 384baf663e8fa66fe4dacec773bc2c5acf71b0d621e6212d04013b3fa3b41d51 --- 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 18:06:06,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:06:06,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:06:06,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:06:06,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:06:06,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:06:06,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:06:06,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:06:06,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:06:06,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:06:06,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:06:06,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:06:06,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:06:06,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:06:06,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:06:06,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:06:06,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:06:06,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:06:06,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:06:06,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:06:06,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:06:06,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:06:06,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:06:06,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:06:06,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:06:06,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:06:06,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:06:06,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:06:06,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:06:06,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:06:06,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:06:06,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:06:06,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:06:06,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:06:06,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:06:06,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:06:06,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:06:06,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:06:06,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:06:06,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:06:06,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:06:06,295 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6965a215-b230-4c77-be22-56a95f444851/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 18:06:06,315 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:06:06,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:06:06,315 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:06:06,316 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:06:06,316 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:06:06,317 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:06:06,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:06:06,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:06:06,318 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:06:06,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:06:06,319 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:06:06,319 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:06:06,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:06:06,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:06:06,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:06:06,320 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 18:06:06,320 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 18:06:06,320 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 18:06:06,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:06:06,321 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:06:06,321 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:06:06,321 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:06:06,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:06:06,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:06:06,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:06:06,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:06:06,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:06:06,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:06:06,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:06:06,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:06:06,324 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:06:06,324 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:06:06,325 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:06:06,325 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_6965a215-b230-4c77-be22-56a95f444851/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6965a215-b230-4c77-be22-56a95f444851/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 384baf663e8fa66fe4dacec773bc2c5acf71b0d621e6212d04013b3fa3b41d51 [2022-11-25 18:06:06,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:06:06,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:06:06,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:06:06,639 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:06:06,642 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:06:06,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6965a215-b230-4c77-be22-56a95f444851/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-wmm/safe008_power.opt.i [2022-11-25 18:06:09,621 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:06:09,990 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:06:09,991 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6965a215-b230-4c77-be22-56a95f444851/sv-benchmarks/c/pthread-wmm/safe008_power.opt.i [2022-11-25 18:06:10,009 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6965a215-b230-4c77-be22-56a95f444851/bin/uautomizer-ZsLfNo2U6R/data/ca10393c8/6a278dc716de47c89ce67ef66d0f7ffc/FLAG6fbfd0bcc [2022-11-25 18:06:10,026 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6965a215-b230-4c77-be22-56a95f444851/bin/uautomizer-ZsLfNo2U6R/data/ca10393c8/6a278dc716de47c89ce67ef66d0f7ffc [2022-11-25 18:06:10,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:06:10,030 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:06:10,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:06:10,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:06:10,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:06:10,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:06:10" (1/1) ... [2022-11-25 18:06:10,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c4b9537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:06:10, skipping insertion in model container [2022-11-25 18:06:10,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:06:10" (1/1) ... [2022-11-25 18:06:10,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:06:10,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:06:10,310 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_6965a215-b230-4c77-be22-56a95f444851/sv-benchmarks/c/pthread-wmm/safe008_power.opt.i[951,964] [2022-11-25 18:06:10,480 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,480 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,481 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,487 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,487 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,488 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,489 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,507 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,510 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,510 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,511 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,525 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,535 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,536 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,538 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,538 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,538 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,539 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,539 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,542 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,542 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,543 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,548 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,548 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,549 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,551 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,552 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,554 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:06:10,567 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:06:10,579 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_6965a215-b230-4c77-be22-56a95f444851/sv-benchmarks/c/pthread-wmm/safe008_power.opt.i[951,964] [2022-11-25 18:06:10,603 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,603 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,603 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,609 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,609 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,623 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,623 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,624 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,624 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,626 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,627 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,627 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,628 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,629 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,629 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,629 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,630 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,632 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,632 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,633 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,636 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,637 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,638 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,640 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,640 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:06:10,642 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:06:10,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:06:10,678 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:06:10,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:06:10 WrapperNode [2022-11-25 18:06:10,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:06:10,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:06:10,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:06:10,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:06:10,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:06:10" (1/1) ... [2022-11-25 18:06:10,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:06:10" (1/1) ... [2022-11-25 18:06:10,730 INFO L138 Inliner]: procedures = 176, calls = 73, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 180 [2022-11-25 18:06:10,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:06:10,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:06:10,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:06:10,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:06:10,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:06:10" (1/1) ... [2022-11-25 18:06:10,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:06:10" (1/1) ... [2022-11-25 18:06:10,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:06:10" (1/1) ... [2022-11-25 18:06:10,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:06:10" (1/1) ... [2022-11-25 18:06:10,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:06:10" (1/1) ... [2022-11-25 18:06:10,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:06:10" (1/1) ... [2022-11-25 18:06:10,785 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:06:10" (1/1) ... [2022-11-25 18:06:10,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:06:10" (1/1) ... [2022-11-25 18:06:10,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:06:10,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:06:10,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:06:10,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:06:10,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:06:10" (1/1) ... [2022-11-25 18:06:10,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:06:10,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6965a215-b230-4c77-be22-56a95f444851/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:06:10,826 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6965a215-b230-4c77-be22-56a95f444851/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:06:10,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6965a215-b230-4c77-be22-56a95f444851/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:06:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:06:10,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:06:10,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 18:06:10,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:06:10,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:06:10,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:06:10,892 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-25 18:06:10,892 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-25 18:06:10,892 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-25 18:06:10,892 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-25 18:06:10,892 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-25 18:06:10,892 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-25 18:06:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:06:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 18:06:10,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:06:10,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:06:10,895 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 18:06:11,153 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:06:11,155 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:06:11,871 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:06:12,564 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:06:12,564 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 18:06:12,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:06:12 BoogieIcfgContainer [2022-11-25 18:06:12,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:06:12,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:06:12,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:06:12,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:06:12,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:06:10" (1/3) ... [2022-11-25 18:06:12,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7adca431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:06:12, skipping insertion in model container [2022-11-25 18:06:12,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:06:10" (2/3) ... [2022-11-25 18:06:12,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7adca431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:06:12, skipping insertion in model container [2022-11-25 18:06:12,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:06:12" (3/3) ... [2022-11-25 18:06:12,578 INFO L112 eAbstractionObserver]: Analyzing ICFG safe008_power.opt.i [2022-11-25 18:06:12,598 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:06:12,598 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 43 error locations. [2022-11-25 18:06:12,598 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:06:12,732 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 18:06:12,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 178 transitions, 371 flow [2022-11-25 18:06:12,899 INFO L130 PetriNetUnfolder]: 2/175 cut-off events. [2022-11-25 18:06:12,899 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:06:12,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 175 events. 2/175 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 245 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 114. Up to 2 conditions per place. [2022-11-25 18:06:12,907 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 178 transitions, 371 flow [2022-11-25 18:06:12,918 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 183 places, 175 transitions, 359 flow [2022-11-25 18:06:12,922 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:06:12,943 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 183 places, 175 transitions, 359 flow [2022-11-25 18:06:12,947 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 183 places, 175 transitions, 359 flow [2022-11-25 18:06:12,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 175 transitions, 359 flow [2022-11-25 18:06:13,018 INFO L130 PetriNetUnfolder]: 2/175 cut-off events. [2022-11-25 18:06:13,019 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:06:13,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 175 events. 2/175 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 246 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 114. Up to 2 conditions per place. [2022-11-25 18:06:13,026 INFO L119 LiptonReduction]: Number of co-enabled transitions 6624 [2022-11-25 18:06:31,462 INFO L134 LiptonReduction]: Checked pairs total: 34097 [2022-11-25 18:06:31,462 INFO L136 LiptonReduction]: Total number of compositions: 160 [2022-11-25 18:06:31,486 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:06:31,494 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;@a77cdd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:06:31,494 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2022-11-25 18:06:31,501 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-11-25 18:06:31,502 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:06:31,502 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:06:31,503 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 18:06:31,504 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-25 18:06:31,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:31,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1139, now seen corresponding path program 1 times [2022-11-25 18:06:31,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:31,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730066244] [2022-11-25 18:06:31,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:31,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:31,635 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 18:06:31,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:31,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730066244] [2022-11-25 18:06:31,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730066244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:06:31,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:06:31,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 18:06:31,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989726256] [2022-11-25 18:06:31,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:06:31,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:06:31,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:31,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:06:31,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:06:31,673 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 338 [2022-11-25 18:06:31,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 149 flow. Second operand has 2 states, 2 states have (on average 130.5) internal successors, (261), 2 states have internal predecessors, (261), 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 18:06:31,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:06:31,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 338 [2022-11-25 18:06:31,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:06:40,469 INFO L130 PetriNetUnfolder]: 31868/44307 cut-off events. [2022-11-25 18:06:40,469 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-25 18:06:40,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88733 conditions, 44307 events. 31868/44307 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 3444. Compared 315764 event pairs, 31868 based on Foata normal form. 0/18251 useless extension candidates. Maximal degree in co-relation 88722. Up to 44200 conditions per place. [2022-11-25 18:06:40,929 INFO L137 encePairwiseOnDemand]: 317/338 looper letters, 47 selfloop transitions, 0 changer transitions 0/49 dead transitions. [2022-11-25 18:06:40,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 49 transitions, 201 flow [2022-11-25 18:06:40,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:06:40,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 18:06:40,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 328 transitions. [2022-11-25 18:06:40,944 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48520710059171596 [2022-11-25 18:06:40,945 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 328 transitions. [2022-11-25 18:06:40,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 328 transitions. [2022-11-25 18:06:40,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:06:40,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 328 transitions. [2022-11-25 18:06:40,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 164.0) internal successors, (328), 2 states have internal predecessors, (328), 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 18:06:40,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 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 18:06:40,968 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 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 18:06:40,970 INFO L175 Difference]: Start difference. First operand has 79 places, 70 transitions, 149 flow. Second operand 2 states and 328 transitions. [2022-11-25 18:06:40,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 49 transitions, 201 flow [2022-11-25 18:06:40,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 49 transitions, 198 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 18:06:40,986 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 104 flow [2022-11-25 18:06:40,988 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=104, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2022-11-25 18:06:40,993 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -22 predicate places. [2022-11-25 18:06:40,993 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 104 flow [2022-11-25 18:06:40,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 130.5) internal successors, (261), 2 states have internal predecessors, (261), 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 18:06:40,994 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:06:40,994 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 18:06:40,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:06:40,995 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-25 18:06:41,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:41,006 INFO L85 PathProgramCache]: Analyzing trace with hash 34905380, now seen corresponding path program 1 times [2022-11-25 18:06:41,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:41,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333892293] [2022-11-25 18:06:41,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:41,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:41,321 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 18:06:41,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:41,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333892293] [2022-11-25 18:06:41,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333892293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:06:41,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:06:41,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:06:41,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505441562] [2022-11-25 18:06:41,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:06:41,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:06:41,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:41,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:06:41,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:06:41,335 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 338 [2022-11-25 18:06:41,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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 18:06:41,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:06:41,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 338 [2022-11-25 18:06:41,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:06:47,352 INFO L130 PetriNetUnfolder]: 28558/39678 cut-off events. [2022-11-25 18:06:47,352 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:06:47,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79537 conditions, 39678 events. 28558/39678 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3159. Compared 305028 event pairs, 5388 based on Foata normal form. 0/16922 useless extension candidates. Maximal degree in co-relation 79534. Up to 31802 conditions per place. [2022-11-25 18:06:47,552 INFO L137 encePairwiseOnDemand]: 335/338 looper letters, 80 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2022-11-25 18:06:47,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 84 transitions, 342 flow [2022-11-25 18:06:47,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:06:47,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:06:47,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 470 transitions. [2022-11-25 18:06:47,559 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4635108481262327 [2022-11-25 18:06:47,559 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 470 transitions. [2022-11-25 18:06:47,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 470 transitions. [2022-11-25 18:06:47,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:06:47,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 470 transitions. [2022-11-25 18:06:47,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 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 18:06:47,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 18:06:47,567 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 18:06:47,567 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 104 flow. Second operand 3 states and 470 transitions. [2022-11-25 18:06:47,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 84 transitions, 342 flow [2022-11-25 18:06:47,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 84 transitions, 342 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:06:47,570 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 106 flow [2022-11-25 18:06:47,571 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2022-11-25 18:06:47,571 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -21 predicate places. [2022-11-25 18:06:47,571 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 106 flow [2022-11-25 18:06:47,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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 18:06:47,573 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:06:47,573 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:06:47,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:06:47,573 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-25 18:06:47,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:47,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1082067712, now seen corresponding path program 1 times [2022-11-25 18:06:47,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:47,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629306922] [2022-11-25 18:06:47,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:47,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:47,764 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 18:06:47,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:47,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629306922] [2022-11-25 18:06:47,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629306922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:06:47,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:06:47,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:06:47,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275531512] [2022-11-25 18:06:47,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:06:47,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:06:47,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:47,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:06:47,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:06:47,822 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 338 [2022-11-25 18:06:47,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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 18:06:47,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:06:47,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 338 [2022-11-25 18:06:47,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:06:52,053 INFO L130 PetriNetUnfolder]: 17406/25411 cut-off events. [2022-11-25 18:06:52,054 INFO L131 PetriNetUnfolder]: For 920/920 co-relation queries the response was YES. [2022-11-25 18:06:52,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51593 conditions, 25411 events. 17406/25411 cut-off events. For 920/920 co-relation queries the response was YES. Maximal size of possible extension queue 1807. Compared 180166 event pairs, 10856 based on Foata normal form. 0/13787 useless extension candidates. Maximal degree in co-relation 51589. Up to 14741 conditions per place. [2022-11-25 18:06:52,196 INFO L137 encePairwiseOnDemand]: 320/338 looper letters, 55 selfloop transitions, 9 changer transitions 0/66 dead transitions. [2022-11-25 18:06:52,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 272 flow [2022-11-25 18:06:52,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:06:52,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:06:52,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 451 transitions. [2022-11-25 18:06:52,203 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4447731755424063 [2022-11-25 18:06:52,203 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 451 transitions. [2022-11-25 18:06:52,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 451 transitions. [2022-11-25 18:06:52,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:06:52,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 451 transitions. [2022-11-25 18:06:52,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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 18:06:52,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 18:06:52,214 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 18:06:52,214 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 106 flow. Second operand 3 states and 451 transitions. [2022-11-25 18:06:52,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 272 flow [2022-11-25 18:06:52,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:06:52,217 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 176 flow [2022-11-25 18:06:52,218 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2022-11-25 18:06:52,219 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -21 predicate places. [2022-11-25 18:06:52,219 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 176 flow [2022-11-25 18:06:52,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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 18:06:52,220 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:06:52,220 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:06:52,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:06:52,221 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-25 18:06:52,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:52,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1082067713, now seen corresponding path program 1 times [2022-11-25 18:06:52,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:52,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551625376] [2022-11-25 18:06:52,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:52,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:52,383 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 18:06:52,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:52,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551625376] [2022-11-25 18:06:52,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551625376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:06:52,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:06:52,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:06:52,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646649304] [2022-11-25 18:06:52,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:06:52,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:06:52,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:52,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:06:52,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:06:52,392 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 338 [2022-11-25 18:06:52,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 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 18:06:52,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:06:52,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 338 [2022-11-25 18:06:52,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:06:56,431 INFO L130 PetriNetUnfolder]: 22395/32411 cut-off events. [2022-11-25 18:06:56,431 INFO L131 PetriNetUnfolder]: For 8262/8262 co-relation queries the response was YES. [2022-11-25 18:06:56,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82284 conditions, 32411 events. 22395/32411 cut-off events. For 8262/8262 co-relation queries the response was YES. Maximal size of possible extension queue 2288. Compared 238824 event pairs, 12785 based on Foata normal form. 0/24352 useless extension candidates. Maximal degree in co-relation 82279. Up to 25676 conditions per place. [2022-11-25 18:06:56,605 INFO L137 encePairwiseOnDemand]: 328/338 looper letters, 83 selfloop transitions, 12 changer transitions 0/97 dead transitions. [2022-11-25 18:06:56,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 97 transitions, 516 flow [2022-11-25 18:06:56,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:06:56,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:06:56,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2022-11-25 18:06:56,607 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46055226824457596 [2022-11-25 18:06:56,608 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2022-11-25 18:06:56,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2022-11-25 18:06:56,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:06:56,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2022-11-25 18:06:56,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 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 18:06:56,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 18:06:56,613 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 18:06:56,613 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 176 flow. Second operand 3 states and 467 transitions. [2022-11-25 18:06:56,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 97 transitions, 516 flow [2022-11-25 18:06:56,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 97 transitions, 482 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:06:56,664 INFO L231 Difference]: Finished difference. Result has 59 places, 64 transitions, 258 flow [2022-11-25 18:06:56,664 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=59, PETRI_TRANSITIONS=64} [2022-11-25 18:06:56,665 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -20 predicate places. [2022-11-25 18:06:56,665 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 64 transitions, 258 flow [2022-11-25 18:06:56,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 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 18:06:56,666 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:06:56,666 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:06:56,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:06:56,666 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P0Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-25 18:06:56,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:56,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1082067715, now seen corresponding path program 1 times [2022-11-25 18:06:56,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:56,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086911157] [2022-11-25 18:06:56,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:56,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:56,900 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 18:06:56,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:56,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086911157] [2022-11-25 18:06:56,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086911157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:06:56,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:06:56,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:06:56,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921511926] [2022-11-25 18:06:56,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:06:56,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:06:56,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:56,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:06:56,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:06:56,968 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 338 [2022-11-25 18:06:56,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 64 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 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 18:06:56,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:06:56,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 338 [2022-11-25 18:06:56,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:06:58,571 INFO L130 PetriNetUnfolder]: 6170/9336 cut-off events. [2022-11-25 18:06:58,571 INFO L131 PetriNetUnfolder]: For 4270/4309 co-relation queries the response was YES. [2022-11-25 18:06:58,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28217 conditions, 9336 events. 6170/9336 cut-off events. For 4270/4309 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 59470 event pairs, 2104 based on Foata normal form. 2870/10801 useless extension candidates. Maximal degree in co-relation 28211. Up to 7408 conditions per place. [2022-11-25 18:06:58,615 INFO L137 encePairwiseOnDemand]: 325/338 looper letters, 82 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2022-11-25 18:06:58,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 86 transitions, 522 flow [2022-11-25 18:06:58,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:06:58,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:06:58,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 586 transitions. [2022-11-25 18:06:58,618 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4334319526627219 [2022-11-25 18:06:58,618 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 586 transitions. [2022-11-25 18:06:58,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 586 transitions. [2022-11-25 18:06:58,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:06:58,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 586 transitions. [2022-11-25 18:06:58,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 146.5) internal successors, (586), 4 states have internal predecessors, (586), 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 18:06:58,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 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 18:06:58,624 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 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 18:06:58,624 INFO L175 Difference]: Start difference. First operand has 59 places, 64 transitions, 258 flow. Second operand 4 states and 586 transitions. [2022-11-25 18:06:58,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 86 transitions, 522 flow [2022-11-25 18:06:58,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 86 transitions, 510 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:06:58,628 INFO L231 Difference]: Finished difference. Result has 53 places, 55 transitions, 236 flow [2022-11-25 18:06:58,628 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=53, PETRI_TRANSITIONS=55} [2022-11-25 18:06:58,629 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -26 predicate places. [2022-11-25 18:06:58,629 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 55 transitions, 236 flow [2022-11-25 18:06:58,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 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 18:06:58,630 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:06:58,630 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:06:58,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:06:58,630 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-25 18:06:58,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:58,631 INFO L85 PathProgramCache]: Analyzing trace with hash 366182196, now seen corresponding path program 1 times [2022-11-25 18:06:58,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:58,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758357277] [2022-11-25 18:06:58,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:58,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:58,720 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 18:06:58,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:58,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758357277] [2022-11-25 18:06:58,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758357277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:06:58,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:06:58,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:06:58,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965709640] [2022-11-25 18:06:58,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:06:58,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:06:58,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:58,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:06:58,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:06:58,724 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 338 [2022-11-25 18:06:58,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 55 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 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 18:06:58,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:06:58,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 338 [2022-11-25 18:06:58,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:07:00,025 INFO L130 PetriNetUnfolder]: 6050/9311 cut-off events. [2022-11-25 18:07:00,025 INFO L131 PetriNetUnfolder]: For 4497/4527 co-relation queries the response was YES. [2022-11-25 18:07:00,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28123 conditions, 9311 events. 6050/9311 cut-off events. For 4497/4527 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 59789 event pairs, 2376 based on Foata normal form. 2/8321 useless extension candidates. Maximal degree in co-relation 28116. Up to 7134 conditions per place. [2022-11-25 18:07:00,068 INFO L137 encePairwiseOnDemand]: 334/338 looper letters, 80 selfloop transitions, 5 changer transitions 0/87 dead transitions. [2022-11-25 18:07:00,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 87 transitions, 539 flow [2022-11-25 18:07:00,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:07:00,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:07:00,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2022-11-25 18:07:00,077 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43984220907297833 [2022-11-25 18:07:00,077 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2022-11-25 18:07:00,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2022-11-25 18:07:00,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:07:00,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2022-11-25 18:07:00,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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 18:07:00,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 18:07:00,082 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 18:07:00,082 INFO L175 Difference]: Start difference. First operand has 53 places, 55 transitions, 236 flow. Second operand 3 states and 446 transitions. [2022-11-25 18:07:00,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 87 transitions, 539 flow [2022-11-25 18:07:00,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 87 transitions, 535 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:07:00,089 INFO L231 Difference]: Finished difference. Result has 54 places, 55 transitions, 256 flow [2022-11-25 18:07:00,089 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=54, PETRI_TRANSITIONS=55} [2022-11-25 18:07:00,092 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -25 predicate places. [2022-11-25 18:07:00,092 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 55 transitions, 256 flow [2022-11-25 18:07:00,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 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 18:07:00,093 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:07:00,093 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:07:00,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:07:00,094 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-25 18:07:00,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:07:00,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1533252157, now seen corresponding path program 1 times [2022-11-25 18:07:00,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:07:00,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119922871] [2022-11-25 18:07:00,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:07:00,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:07:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:00,335 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 18:07:00,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:07:00,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119922871] [2022-11-25 18:07:00,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119922871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:07:00,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:07:00,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:07:00,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129334520] [2022-11-25 18:07:00,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:07:00,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:07:00,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:07:00,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:07:00,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:07:00,380 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 338 [2022-11-25 18:07:00,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 55 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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 18:07:00,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:07:00,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 338 [2022-11-25 18:07:00,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:07:02,060 INFO L130 PetriNetUnfolder]: 7750/11986 cut-off events. [2022-11-25 18:07:02,061 INFO L131 PetriNetUnfolder]: For 6976/7006 co-relation queries the response was YES. [2022-11-25 18:07:02,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36865 conditions, 11986 events. 7750/11986 cut-off events. For 6976/7006 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 81063 event pairs, 3772 based on Foata normal form. 2/10866 useless extension candidates. Maximal degree in co-relation 36857. Up to 8840 conditions per place. [2022-11-25 18:07:02,117 INFO L137 encePairwiseOnDemand]: 331/338 looper letters, 70 selfloop transitions, 9 changer transitions 0/81 dead transitions. [2022-11-25 18:07:02,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 81 transitions, 516 flow [2022-11-25 18:07:02,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:07:02,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:07:02,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2022-11-25 18:07:02,119 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4171597633136095 [2022-11-25 18:07:02,119 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2022-11-25 18:07:02,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2022-11-25 18:07:02,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:07:02,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2022-11-25 18:07:02,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 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 18:07:02,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 18:07:02,124 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 18:07:02,124 INFO L175 Difference]: Start difference. First operand has 54 places, 55 transitions, 256 flow. Second operand 3 states and 423 transitions. [2022-11-25 18:07:02,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 81 transitions, 516 flow [2022-11-25 18:07:02,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 81 transitions, 506 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:07:02,132 INFO L231 Difference]: Finished difference. Result has 55 places, 60 transitions, 305 flow [2022-11-25 18:07:02,132 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=305, PETRI_PLACES=55, PETRI_TRANSITIONS=60} [2022-11-25 18:07:02,133 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -24 predicate places. [2022-11-25 18:07:02,133 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 60 transitions, 305 flow [2022-11-25 18:07:02,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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 18:07:02,133 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:07:02,133 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:07:02,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:07:02,134 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-25 18:07:02,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:07:02,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1533252156, now seen corresponding path program 1 times [2022-11-25 18:07:02,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:07:02,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892545932] [2022-11-25 18:07:02,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:07:02,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:07:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:02,421 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 18:07:02,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:07:02,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892545932] [2022-11-25 18:07:02,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892545932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:07:02,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:07:02,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:07:02,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519173763] [2022-11-25 18:07:02,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:07:02,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:07:02,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:07:02,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:07:02,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:07:02,462 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 338 [2022-11-25 18:07:02,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 60 transitions, 305 flow. Second operand has 4 states, 4 states have (on average 127.75) internal successors, (511), 4 states have internal predecessors, (511), 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 18:07:02,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:07:02,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 338 [2022-11-25 18:07:02,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:07:04,878 INFO L130 PetriNetUnfolder]: 10642/16430 cut-off events. [2022-11-25 18:07:04,878 INFO L131 PetriNetUnfolder]: For 11614/11644 co-relation queries the response was YES. [2022-11-25 18:07:04,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52650 conditions, 16430 events. 10642/16430 cut-off events. For 11614/11644 co-relation queries the response was YES. Maximal size of possible extension queue 1243. Compared 116809 event pairs, 5238 based on Foata normal form. 74/14928 useless extension candidates. Maximal degree in co-relation 52641. Up to 8362 conditions per place. [2022-11-25 18:07:04,966 INFO L137 encePairwiseOnDemand]: 334/338 looper letters, 89 selfloop transitions, 6 changer transitions 0/97 dead transitions. [2022-11-25 18:07:04,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 97 transitions, 663 flow [2022-11-25 18:07:04,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:07:04,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:07:04,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 562 transitions. [2022-11-25 18:07:04,969 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4156804733727811 [2022-11-25 18:07:04,969 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 562 transitions. [2022-11-25 18:07:04,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 562 transitions. [2022-11-25 18:07:04,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:07:04,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 562 transitions. [2022-11-25 18:07:04,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 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 18:07:04,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 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 18:07:04,974 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 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 18:07:04,974 INFO L175 Difference]: Start difference. First operand has 55 places, 60 transitions, 305 flow. Second operand 4 states and 562 transitions. [2022-11-25 18:07:04,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 97 transitions, 663 flow [2022-11-25 18:07:05,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 97 transitions, 654 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:07:05,063 INFO L231 Difference]: Finished difference. Result has 58 places, 60 transitions, 317 flow [2022-11-25 18:07:05,063 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=317, PETRI_PLACES=58, PETRI_TRANSITIONS=60} [2022-11-25 18:07:05,064 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -21 predicate places. [2022-11-25 18:07:05,064 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 60 transitions, 317 flow [2022-11-25 18:07:05,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.75) internal successors, (511), 4 states have internal predecessors, (511), 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 18:07:05,064 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:07:05,065 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:07:05,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:07:05,065 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-25 18:07:05,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:07:05,066 INFO L85 PathProgramCache]: Analyzing trace with hash 474970690, now seen corresponding path program 2 times [2022-11-25 18:07:05,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:07:05,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102208892] [2022-11-25 18:07:05,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:07:05,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:07:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:05,644 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 18:07:05,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:07:05,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102208892] [2022-11-25 18:07:05,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102208892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:07:05,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:07:05,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:07:05,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062898734] [2022-11-25 18:07:05,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:07:05,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:07:05,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:07:05,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:07:05,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:07:05,771 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 338 [2022-11-25 18:07:05,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 60 transitions, 317 flow. Second operand has 6 states, 6 states have (on average 119.83333333333333) internal successors, (719), 6 states have internal predecessors, (719), 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 18:07:05,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:07:05,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 338 [2022-11-25 18:07:05,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:07:08,870 INFO L130 PetriNetUnfolder]: 15134/23512 cut-off events. [2022-11-25 18:07:08,870 INFO L131 PetriNetUnfolder]: For 16582/16606 co-relation queries the response was YES. [2022-11-25 18:07:08,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74390 conditions, 23512 events. 15134/23512 cut-off events. For 16582/16606 co-relation queries the response was YES. Maximal size of possible extension queue 1874. Compared 179867 event pairs, 4742 based on Foata normal form. 149/21222 useless extension candidates. Maximal degree in co-relation 74380. Up to 9901 conditions per place. [2022-11-25 18:07:08,998 INFO L137 encePairwiseOnDemand]: 328/338 looper letters, 213 selfloop transitions, 28 changer transitions 0/243 dead transitions. [2022-11-25 18:07:08,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 243 transitions, 1601 flow [2022-11-25 18:07:08,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 18:07:08,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 18:07:09,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1477 transitions. [2022-11-25 18:07:09,003 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3972565895642819 [2022-11-25 18:07:09,003 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1477 transitions. [2022-11-25 18:07:09,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1477 transitions. [2022-11-25 18:07:09,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:07:09,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1477 transitions. [2022-11-25 18:07:09,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 134.27272727272728) internal successors, (1477), 11 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:07:09,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 338.0) internal successors, (4056), 12 states have internal predecessors, (4056), 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 18:07:09,014 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 338.0) internal successors, (4056), 12 states have internal predecessors, (4056), 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 18:07:09,014 INFO L175 Difference]: Start difference. First operand has 58 places, 60 transitions, 317 flow. Second operand 11 states and 1477 transitions. [2022-11-25 18:07:09,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 243 transitions, 1601 flow [2022-11-25 18:07:09,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 243 transitions, 1581 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 18:07:09,055 INFO L231 Difference]: Finished difference. Result has 70 places, 84 transitions, 563 flow [2022-11-25 18:07:09,055 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=563, PETRI_PLACES=70, PETRI_TRANSITIONS=84} [2022-11-25 18:07:09,056 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -9 predicate places. [2022-11-25 18:07:09,056 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 84 transitions, 563 flow [2022-11-25 18:07:09,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.83333333333333) internal successors, (719), 6 states have internal predecessors, (719), 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 18:07:09,057 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:07:09,057 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:07:09,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:07:09,057 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-25 18:07:09,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:07:09,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1533259055, now seen corresponding path program 1 times [2022-11-25 18:07:09,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:07:09,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618052822] [2022-11-25 18:07:09,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:07:09,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:07:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:09,211 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 18:07:09,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:07:09,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618052822] [2022-11-25 18:07:09,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618052822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:07:09,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:07:09,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:07:09,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143782442] [2022-11-25 18:07:09,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:07:09,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:07:09,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:07:09,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:07:09,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:07:09,217 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 338 [2022-11-25 18:07:09,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 84 transitions, 563 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 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 18:07:09,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:07:09,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 338 [2022-11-25 18:07:09,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:07:12,193 INFO L130 PetriNetUnfolder]: 14985/24445 cut-off events. [2022-11-25 18:07:12,194 INFO L131 PetriNetUnfolder]: For 31315/31315 co-relation queries the response was YES. [2022-11-25 18:07:12,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82783 conditions, 24445 events. 14985/24445 cut-off events. For 31315/31315 co-relation queries the response was YES. Maximal size of possible extension queue 1882. Compared 200969 event pairs, 2742 based on Foata normal form. 0/22066 useless extension candidates. Maximal degree in co-relation 82768. Up to 19711 conditions per place. [2022-11-25 18:07:12,343 INFO L137 encePairwiseOnDemand]: 335/338 looper letters, 142 selfloop transitions, 2 changer transitions 0/146 dead transitions. [2022-11-25 18:07:12,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 146 transitions, 1316 flow [2022-11-25 18:07:12,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:07:12,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:07:12,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2022-11-25 18:07:12,345 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4349112426035503 [2022-11-25 18:07:12,345 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2022-11-25 18:07:12,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2022-11-25 18:07:12,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:07:12,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2022-11-25 18:07:12,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 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 18:07:12,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 18:07:12,349 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 18:07:12,349 INFO L175 Difference]: Start difference. First operand has 70 places, 84 transitions, 563 flow. Second operand 3 states and 441 transitions. [2022-11-25 18:07:12,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 146 transitions, 1316 flow [2022-11-25 18:07:12,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 146 transitions, 1308 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-11-25 18:07:12,469 INFO L231 Difference]: Finished difference. Result has 73 places, 84 transitions, 567 flow [2022-11-25 18:07:12,469 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=567, PETRI_PLACES=73, PETRI_TRANSITIONS=84} [2022-11-25 18:07:12,470 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -6 predicate places. [2022-11-25 18:07:12,470 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 84 transitions, 567 flow [2022-11-25 18:07:12,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 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 18:07:12,470 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:07:12,471 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:07:12,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 18:07:12,471 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-25 18:07:12,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:07:12,472 INFO L85 PathProgramCache]: Analyzing trace with hash -286392933, now seen corresponding path program 1 times [2022-11-25 18:07:12,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:07:12,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727691100] [2022-11-25 18:07:12,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:07:12,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:07:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:12,684 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 18:07:12,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:07:12,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727691100] [2022-11-25 18:07:12,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727691100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:07:12,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:07:12,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:07:12,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734854931] [2022-11-25 18:07:12,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:07:12,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:07:12,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:07:12,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:07:12,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:07:12,692 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 338 [2022-11-25 18:07:12,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 84 transitions, 567 flow. Second operand has 5 states, 5 states have (on average 128.4) internal successors, (642), 5 states have internal predecessors, (642), 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 18:07:12,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:07:12,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 338 [2022-11-25 18:07:12,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:07:17,757 INFO L130 PetriNetUnfolder]: 28425/44837 cut-off events. [2022-11-25 18:07:17,757 INFO L131 PetriNetUnfolder]: For 51835/51835 co-relation queries the response was YES. [2022-11-25 18:07:17,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156522 conditions, 44837 events. 28425/44837 cut-off events. For 51835/51835 co-relation queries the response was YES. Maximal size of possible extension queue 3300. Compared 375819 event pairs, 4903 based on Foata normal form. 234/40826 useless extension candidates. Maximal degree in co-relation 156505. Up to 20526 conditions per place. [2022-11-25 18:07:18,051 INFO L137 encePairwiseOnDemand]: 334/338 looper letters, 201 selfloop transitions, 3 changer transitions 0/205 dead transitions. [2022-11-25 18:07:18,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 205 transitions, 1801 flow [2022-11-25 18:07:18,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:07:18,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:07:18,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 588 transitions. [2022-11-25 18:07:18,054 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4349112426035503 [2022-11-25 18:07:18,055 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 588 transitions. [2022-11-25 18:07:18,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 588 transitions. [2022-11-25 18:07:18,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:07:18,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 588 transitions. [2022-11-25 18:07:18,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 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 18:07:18,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 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 18:07:18,060 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 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 18:07:18,060 INFO L175 Difference]: Start difference. First operand has 73 places, 84 transitions, 567 flow. Second operand 4 states and 588 transitions. [2022-11-25 18:07:18,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 205 transitions, 1801 flow [2022-11-25 18:07:19,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 205 transitions, 1795 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:07:19,265 INFO L231 Difference]: Finished difference. Result has 76 places, 85 transitions, 582 flow [2022-11-25 18:07:19,265 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=582, PETRI_PLACES=76, PETRI_TRANSITIONS=85} [2022-11-25 18:07:19,266 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -3 predicate places. [2022-11-25 18:07:19,266 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 85 transitions, 582 flow [2022-11-25 18:07:19,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.4) internal successors, (642), 5 states have internal predecessors, (642), 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 18:07:19,266 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:07:19,267 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:07:19,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 18:07:19,267 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-25 18:07:19,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:07:19,267 INFO L85 PathProgramCache]: Analyzing trace with hash -337954947, now seen corresponding path program 1 times [2022-11-25 18:07:19,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:07:19,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676082843] [2022-11-25 18:07:19,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:07:19,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:07:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:19,662 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 18:07:19,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:07:19,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676082843] [2022-11-25 18:07:19,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676082843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:07:19,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:07:19,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:07:19,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180953908] [2022-11-25 18:07:19,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:07:19,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:07:19,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:07:19,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:07:19,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:07:19,719 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 338 [2022-11-25 18:07:19,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 85 transitions, 582 flow. Second operand has 6 states, 6 states have (on average 125.16666666666667) internal successors, (751), 6 states have internal predecessors, (751), 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 18:07:19,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:07:19,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 338 [2022-11-25 18:07:19,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:07:25,821 INFO L130 PetriNetUnfolder]: 24964/38884 cut-off events. [2022-11-25 18:07:25,822 INFO L131 PetriNetUnfolder]: For 40523/40647 co-relation queries the response was YES. [2022-11-25 18:07:25,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141189 conditions, 38884 events. 24964/38884 cut-off events. For 40523/40647 co-relation queries the response was YES. Maximal size of possible extension queue 3355. Compared 320162 event pairs, 9987 based on Foata normal form. 234/35291 useless extension candidates. Maximal degree in co-relation 141170. Up to 32274 conditions per place. [2022-11-25 18:07:26,049 INFO L137 encePairwiseOnDemand]: 333/338 looper letters, 142 selfloop transitions, 12 changer transitions 0/156 dead transitions. [2022-11-25 18:07:26,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 156 transitions, 1243 flow [2022-11-25 18:07:26,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:07:26,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:07:26,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 831 transitions. [2022-11-25 18:07:26,052 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40976331360946744 [2022-11-25 18:07:26,052 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 831 transitions. [2022-11-25 18:07:26,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 831 transitions. [2022-11-25 18:07:26,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:07:26,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 831 transitions. [2022-11-25 18:07:26,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 138.5) internal successors, (831), 6 states have internal predecessors, (831), 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 18:07:26,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 338.0) internal successors, (2366), 7 states have internal predecessors, (2366), 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 18:07:26,058 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 338.0) internal successors, (2366), 7 states have internal predecessors, (2366), 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 18:07:26,059 INFO L175 Difference]: Start difference. First operand has 76 places, 85 transitions, 582 flow. Second operand 6 states and 831 transitions. [2022-11-25 18:07:26,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 156 transitions, 1243 flow [2022-11-25 18:07:26,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 156 transitions, 1222 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 18:07:26,510 INFO L231 Difference]: Finished difference. Result has 75 places, 83 transitions, 562 flow [2022-11-25 18:07:26,511 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=562, PETRI_PLACES=75, PETRI_TRANSITIONS=83} [2022-11-25 18:07:26,511 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -4 predicate places. [2022-11-25 18:07:26,511 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 83 transitions, 562 flow [2022-11-25 18:07:26,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 125.16666666666667) internal successors, (751), 6 states have internal predecessors, (751), 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 18:07:26,512 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:07:26,512 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:07:26,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 18:07:26,513 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting P1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-25 18:07:26,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:07:26,513 INFO L85 PathProgramCache]: Analyzing trace with hash -288135719, now seen corresponding path program 1 times [2022-11-25 18:07:26,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:07:26,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354739898] [2022-11-25 18:07:26,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:07:26,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:07:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:26,637 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 18:07:26,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:07:26,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354739898] [2022-11-25 18:07:26,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354739898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:07:26,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:07:26,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:07:26,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921934928] [2022-11-25 18:07:26,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:07:26,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:07:26,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:07:26,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:07:26,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:07:26,729 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 338 [2022-11-25 18:07:26,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 83 transitions, 562 flow. Second operand has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 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 18:07:26,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:07:26,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 338 [2022-11-25 18:07:26,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:07:30,318 INFO L130 PetriNetUnfolder]: 16820/25625 cut-off events. [2022-11-25 18:07:30,318 INFO L131 PetriNetUnfolder]: For 32376/32432 co-relation queries the response was YES. [2022-11-25 18:07:30,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95342 conditions, 25625 events. 16820/25625 cut-off events. For 32376/32432 co-relation queries the response was YES. Maximal size of possible extension queue 1917. Compared 186205 event pairs, 6704 based on Foata normal form. 539/23308 useless extension candidates. Maximal degree in co-relation 95325. Up to 11152 conditions per place. [2022-11-25 18:07:30,624 INFO L137 encePairwiseOnDemand]: 323/338 looper letters, 91 selfloop transitions, 27 changer transitions 0/120 dead transitions. [2022-11-25 18:07:30,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 120 transitions, 1052 flow [2022-11-25 18:07:30,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:07:30,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:07:30,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 550 transitions. [2022-11-25 18:07:30,626 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4068047337278107 [2022-11-25 18:07:30,626 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 550 transitions. [2022-11-25 18:07:30,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 550 transitions. [2022-11-25 18:07:30,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:07:30,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 550 transitions. [2022-11-25 18:07:30,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.5) internal successors, (550), 4 states have internal predecessors, (550), 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 18:07:30,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 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 18:07:30,631 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 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 18:07:30,631 INFO L175 Difference]: Start difference. First operand has 75 places, 83 transitions, 562 flow. Second operand 4 states and 550 transitions. [2022-11-25 18:07:30,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 120 transitions, 1052 flow [2022-11-25 18:07:31,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 120 transitions, 1014 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-25 18:07:31,009 INFO L231 Difference]: Finished difference. Result has 76 places, 92 transitions, 728 flow [2022-11-25 18:07:31,009 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=728, PETRI_PLACES=76, PETRI_TRANSITIONS=92} [2022-11-25 18:07:31,010 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -3 predicate places. [2022-11-25 18:07:31,010 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 92 transitions, 728 flow [2022-11-25 18:07:31,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 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 18:07:31,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:07:31,011 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:07:31,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 18:07:31,011 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-25 18:07:31,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:07:31,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1529026849, now seen corresponding path program 1 times [2022-11-25 18:07:31,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:07:31,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533421025] [2022-11-25 18:07:31,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:07:31,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:07:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:31,217 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 18:07:31,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:07:31,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533421025] [2022-11-25 18:07:31,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533421025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:07:31,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:07:31,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:07:31,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735101725] [2022-11-25 18:07:31,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:07:31,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:07:31,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:07:31,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:07:31,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:07:31,223 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 338 [2022-11-25 18:07:31,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 92 transitions, 728 flow. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 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 18:07:31,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:07:31,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 338 [2022-11-25 18:07:31,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand