./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-atomic/szymanski.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15954334-dfaa-4c27-85a1-33a174e5fded/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15954334-dfaa-4c27-85a1-33a174e5fded/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_15954334-dfaa-4c27-85a1-33a174e5fded/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15954334-dfaa-4c27-85a1-33a174e5fded/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-atomic/szymanski.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15954334-dfaa-4c27-85a1-33a174e5fded/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_15954334-dfaa-4c27-85a1-33a174e5fded/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 bc84ca2197caec735a8480f9d61b820c686ed9ae52711f2c7500999694c2ad40 --- 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 18:32:51,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:32:51,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:32:51,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:32:51,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:32:51,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:32:51,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:32:51,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:32:51,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:32:51,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:32:51,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:32:51,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:32:51,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:32:51,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:32:51,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:32:51,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:32:51,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:32:51,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:32:51,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:32:51,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:32:51,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:32:51,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:32:51,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:32:51,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:32:51,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:32:51,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:32:51,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:32:51,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:32:51,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:32:51,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:32:51,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:32:51,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:32:51,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:32:51,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:32:51,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:32:51,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:32:51,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:32:51,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:32:51,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:32:51,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:32:51,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:32:51,382 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15954334-dfaa-4c27-85a1-33a174e5fded/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 18:32:51,425 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:32:51,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:32:51,426 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:32:51,426 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:32:51,432 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:32:51,432 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:32:51,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:32:51,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:32:51,434 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:32:51,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:32:51,435 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:32:51,436 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:32:51,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:32:51,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:32:51,437 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:32:51,437 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 18:32:51,437 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 18:32:51,437 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 18:32:51,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:32:51,438 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:32:51,438 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:32:51,438 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:32:51,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:32:51,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:32:51,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:32:51,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:32:51,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:32:51,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:32:51,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:32:51,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:32:51,442 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:32:51,442 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:32:51,442 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:32:51,443 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_15954334-dfaa-4c27-85a1-33a174e5fded/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15954334-dfaa-4c27-85a1-33a174e5fded/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc84ca2197caec735a8480f9d61b820c686ed9ae52711f2c7500999694c2ad40 [2022-11-25 18:32:51,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:32:51,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:32:51,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:32:51,793 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:32:51,794 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:32:51,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15954334-dfaa-4c27-85a1-33a174e5fded/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-atomic/szymanski.i [2022-11-25 18:32:54,903 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:32:55,144 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:32:55,145 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15954334-dfaa-4c27-85a1-33a174e5fded/sv-benchmarks/c/pthread-atomic/szymanski.i [2022-11-25 18:32:55,160 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15954334-dfaa-4c27-85a1-33a174e5fded/bin/uautomizer-ZsLfNo2U6R/data/835862d68/2770a264dc3341d3a175d112d59ccb64/FLAGcc2e2aba1 [2022-11-25 18:32:55,175 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15954334-dfaa-4c27-85a1-33a174e5fded/bin/uautomizer-ZsLfNo2U6R/data/835862d68/2770a264dc3341d3a175d112d59ccb64 [2022-11-25 18:32:55,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:32:55,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:32:55,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:32:55,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:32:55,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:32:55,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:32:55" (1/1) ... [2022-11-25 18:32:55,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de3a441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:55, skipping insertion in model container [2022-11-25 18:32:55,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:32:55" (1/1) ... [2022-11-25 18:32:55,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:32:55,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:32:55,506 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 18:32:55,736 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,738 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,738 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,739 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,741 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,742 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,743 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,743 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,744 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,744 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,745 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,745 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,746 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,746 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,747 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,748 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,749 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,749 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,750 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,752 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,753 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,754 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_15954334-dfaa-4c27-85a1-33a174e5fded/sv-benchmarks/c/pthread-atomic/szymanski.i[31505,31518] [2022-11-25 18:32:55,762 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,762 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,766 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,766 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,767 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,768 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,771 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,771 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,774 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,774 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,775 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,775 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,775 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,776 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,776 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,777 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,777 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,777 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,779 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,782 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,783 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,784 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_15954334-dfaa-4c27-85a1-33a174e5fded/sv-benchmarks/c/pthread-atomic/szymanski.i[32915,32928] [2022-11-25 18:32:55,784 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,785 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,786 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,787 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,787 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,787 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:32:55,808 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:32:55,825 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 18:32:55,847 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,848 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,848 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,849 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,849 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,850 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,850 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,855 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,855 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,856 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,857 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,858 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,859 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,860 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,861 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,862 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,863 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,869 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_15954334-dfaa-4c27-85a1-33a174e5fded/sv-benchmarks/c/pthread-atomic/szymanski.i[31505,31518] [2022-11-25 18:32:55,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,876 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,876 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,881 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,883 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,884 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,884 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,885 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,886 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,887 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,887 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,888 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,888 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,889 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,889 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,890 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,890 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,891 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,893 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,894 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,895 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,896 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,897 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,898 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,899 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,900 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_15954334-dfaa-4c27-85a1-33a174e5fded/sv-benchmarks/c/pthread-atomic/szymanski.i[32915,32928] [2022-11-25 18:32:55,900 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,901 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,901 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,904 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,905 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:32:55,906 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:32:55,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:32:55,966 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:32:55,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:55 WrapperNode [2022-11-25 18:32:55,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:32:55,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:32:55,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:32:55,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:32:55,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:55" (1/1) ... [2022-11-25 18:32:56,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:55" (1/1) ... [2022-11-25 18:32:56,069 INFO L138 Inliner]: procedures = 171, calls = 75, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2022-11-25 18:32:56,070 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:32:56,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:32:56,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:32:56,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:32:56,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:55" (1/1) ... [2022-11-25 18:32:56,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:55" (1/1) ... [2022-11-25 18:32:56,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:55" (1/1) ... [2022-11-25 18:32:56,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:55" (1/1) ... [2022-11-25 18:32:56,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:55" (1/1) ... [2022-11-25 18:32:56,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:55" (1/1) ... [2022-11-25 18:32:56,125 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:55" (1/1) ... [2022-11-25 18:32:56,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:55" (1/1) ... [2022-11-25 18:32:56,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:32:56,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:32:56,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:32:56,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:32:56,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:55" (1/1) ... [2022-11-25 18:32:56,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:32:56,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15954334-dfaa-4c27-85a1-33a174e5fded/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:32:56,185 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15954334-dfaa-4c27-85a1-33a174e5fded/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:32:56,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15954334-dfaa-4c27-85a1-33a174e5fded/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:32:56,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:32:56,223 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-11-25 18:32:56,223 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-11-25 18:32:56,224 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-25 18:32:56,224 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-25 18:32:56,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:32:56,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 18:32:56,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:32:56,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:32:56,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:32:56,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:32:56,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 18:32:56,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:32:56,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:32:56,226 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 18:32:56,350 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:32:56,352 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:32:56,650 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:32:56,661 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:32:56,661 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-25 18:32:56,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:32:56 BoogieIcfgContainer [2022-11-25 18:32:56,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:32:56,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:32:56,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:32:56,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:32:56,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:32:55" (1/3) ... [2022-11-25 18:32:56,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22cd38b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:32:56, skipping insertion in model container [2022-11-25 18:32:56,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:55" (2/3) ... [2022-11-25 18:32:56,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22cd38b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:32:56, skipping insertion in model container [2022-11-25 18:32:56,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:32:56" (3/3) ... [2022-11-25 18:32:56,672 INFO L112 eAbstractionObserver]: Analyzing ICFG szymanski.i [2022-11-25 18:32:56,693 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:32:56,693 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-25 18:32:56,693 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:32:56,804 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 18:32:56,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 129 transitions, 274 flow [2022-11-25 18:32:56,894 INFO L130 PetriNetUnfolder]: 20/127 cut-off events. [2022-11-25 18:32:56,895 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 18:32:56,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 127 events. 20/127 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 188 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 87. Up to 3 conditions per place. [2022-11-25 18:32:56,903 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 129 transitions, 274 flow [2022-11-25 18:32:56,908 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 122 transitions, 256 flow [2022-11-25 18:32:56,912 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:32:56,927 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 122 transitions, 256 flow [2022-11-25 18:32:56,930 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 122 transitions, 256 flow [2022-11-25 18:32:56,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 122 transitions, 256 flow [2022-11-25 18:32:56,974 INFO L130 PetriNetUnfolder]: 20/122 cut-off events. [2022-11-25 18:32:56,974 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 18:32:56,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 122 events. 20/122 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 187 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 87. Up to 3 conditions per place. [2022-11-25 18:32:56,991 INFO L119 LiptonReduction]: Number of co-enabled transitions 4248 [2022-11-25 18:33:00,342 INFO L134 LiptonReduction]: Checked pairs total: 9644 [2022-11-25 18:33:00,342 INFO L136 LiptonReduction]: Total number of compositions: 98 [2022-11-25 18:33:00,359 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:33:00,366 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;@4641043b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:33:00,366 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-25 18:33:00,367 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-25 18:33:00,368 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:33:00,368 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:33:00,369 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 18:33:00,369 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 18:33:00,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:33:00,374 INFO L85 PathProgramCache]: Analyzing trace with hash 550, now seen corresponding path program 1 times [2022-11-25 18:33:00,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:33:00,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801438701] [2022-11-25 18:33:00,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:00,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:33:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:33:00,484 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 18:33:00,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:33:00,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801438701] [2022-11-25 18:33:00,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801438701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:33:00,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:33:00,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 18:33:00,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566214610] [2022-11-25 18:33:00,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:33:00,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:33:00,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:33:00,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:33:00,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:33:00,524 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 227 [2022-11-25 18:33:00,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 56 transitions, 124 flow. Second operand has 2 states, 2 states have (on average 115.5) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 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 18:33:00,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:33:00,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 227 [2022-11-25 18:33:00,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:33:00,993 INFO L130 PetriNetUnfolder]: 1790/2741 cut-off events. [2022-11-25 18:33:00,994 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-11-25 18:33:01,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5197 conditions, 2741 events. 1790/2741 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 13689 event pairs, 878 based on Foata normal form. 0/1411 useless extension candidates. Maximal degree in co-relation 4891. Up to 2420 conditions per place. [2022-11-25 18:33:01,024 INFO L137 encePairwiseOnDemand]: 224/227 looper letters, 41 selfloop transitions, 0 changer transitions 0/53 dead transitions. [2022-11-25 18:33:01,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 53 transitions, 200 flow [2022-11-25 18:33:01,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:33:01,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 18:33:01,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 274 transitions. [2022-11-25 18:33:01,047 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6035242290748899 [2022-11-25 18:33:01,048 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 274 transitions. [2022-11-25 18:33:01,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 274 transitions. [2022-11-25 18:33:01,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:33:01,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 274 transitions. [2022-11-25 18:33:01,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 137.0) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 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 18:33:01,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 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 18:33:01,067 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 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 18:33:01,070 INFO L175 Difference]: Start difference. First operand has 52 places, 56 transitions, 124 flow. Second operand 2 states and 274 transitions. [2022-11-25 18:33:01,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 53 transitions, 200 flow [2022-11-25 18:33:01,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 53 transitions, 192 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 18:33:01,079 INFO L231 Difference]: Finished difference. Result has 47 places, 53 transitions, 110 flow [2022-11-25 18:33:01,081 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=110, PETRI_PLACES=47, PETRI_TRANSITIONS=53} [2022-11-25 18:33:01,085 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2022-11-25 18:33:01,085 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 53 transitions, 110 flow [2022-11-25 18:33:01,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 115.5) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 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 18:33:01,086 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:33:01,086 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:33:01,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:33:01,087 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 18:33:01,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:33:01,089 INFO L85 PathProgramCache]: Analyzing trace with hash 543074, now seen corresponding path program 1 times [2022-11-25 18:33:01,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:33:01,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930502000] [2022-11-25 18:33:01,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:01,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:33:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:33:01,331 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 18:33:01,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:33:01,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930502000] [2022-11-25 18:33:01,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930502000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:33:01,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:33:01,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:33:01,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830220979] [2022-11-25 18:33:01,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:33:01,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:33:01,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:33:01,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:33:01,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:33:01,378 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 227 [2022-11-25 18:33:01,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 53 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 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 18:33:01,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:33:01,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 227 [2022-11-25 18:33:01,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:33:01,679 INFO L130 PetriNetUnfolder]: 1754/2676 cut-off events. [2022-11-25 18:33:01,679 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 18:33:01,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5049 conditions, 2676 events. 1754/2676 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 13246 event pairs, 857 based on Foata normal form. 0/1388 useless extension candidates. Maximal degree in co-relation 5046. Up to 2358 conditions per place. [2022-11-25 18:33:01,696 INFO L137 encePairwiseOnDemand]: 223/227 looper letters, 37 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2022-11-25 18:33:01,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 51 transitions, 184 flow [2022-11-25 18:33:01,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:33:01,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:33:01,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2022-11-25 18:33:01,699 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5447870778267254 [2022-11-25 18:33:01,699 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 371 transitions. [2022-11-25 18:33:01,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 371 transitions. [2022-11-25 18:33:01,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:33:01,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 371 transitions. [2022-11-25 18:33:01,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 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 18:33:01,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 18:33:01,704 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 18:33:01,704 INFO L175 Difference]: Start difference. First operand has 47 places, 53 transitions, 110 flow. Second operand 3 states and 371 transitions. [2022-11-25 18:33:01,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 51 transitions, 184 flow [2022-11-25 18:33:01,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 51 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:33:01,706 INFO L231 Difference]: Finished difference. Result has 47 places, 51 transitions, 110 flow [2022-11-25 18:33:01,706 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=47, PETRI_TRANSITIONS=51} [2022-11-25 18:33:01,707 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2022-11-25 18:33:01,707 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 51 transitions, 110 flow [2022-11-25 18:33:01,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 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 18:33:01,707 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:33:01,708 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:33:01,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:33:01,708 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 18:33:01,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:33:01,709 INFO L85 PathProgramCache]: Analyzing trace with hash 543073, now seen corresponding path program 1 times [2022-11-25 18:33:01,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:33:01,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441096484] [2022-11-25 18:33:01,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:01,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:33:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:33:01,769 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 18:33:01,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:33:01,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441096484] [2022-11-25 18:33:01,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441096484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:33:01,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:33:01,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:33:01,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021359224] [2022-11-25 18:33:01,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:33:01,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:33:01,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:33:01,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:33:01,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:33:01,822 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 227 [2022-11-25 18:33:01,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 51 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 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 18:33:01,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:33:01,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 227 [2022-11-25 18:33:01,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:33:02,059 INFO L130 PetriNetUnfolder]: 1718/2611 cut-off events. [2022-11-25 18:33:02,059 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 18:33:02,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4927 conditions, 2611 events. 1718/2611 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 12830 event pairs, 836 based on Foata normal form. 0/1365 useless extension candidates. Maximal degree in co-relation 4923. Up to 2298 conditions per place. [2022-11-25 18:33:02,077 INFO L137 encePairwiseOnDemand]: 223/227 looper letters, 35 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2022-11-25 18:33:02,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 49 transitions, 180 flow [2022-11-25 18:33:02,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:33:02,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:33:02,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2022-11-25 18:33:02,079 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5242290748898678 [2022-11-25 18:33:02,079 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2022-11-25 18:33:02,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2022-11-25 18:33:02,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:33:02,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2022-11-25 18:33:02,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 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 18:33:02,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 18:33:02,085 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 18:33:02,085 INFO L175 Difference]: Start difference. First operand has 47 places, 51 transitions, 110 flow. Second operand 3 states and 357 transitions. [2022-11-25 18:33:02,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 49 transitions, 180 flow [2022-11-25 18:33:02,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:33:02,088 INFO L231 Difference]: Finished difference. Result has 45 places, 49 transitions, 106 flow [2022-11-25 18:33:02,088 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=49} [2022-11-25 18:33:02,090 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2022-11-25 18:33:02,090 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 49 transitions, 106 flow [2022-11-25 18:33:02,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 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 18:33:02,091 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:33:02,091 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:33:02,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:33:02,092 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 18:33:02,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:33:02,093 INFO L85 PathProgramCache]: Analyzing trace with hash 521905677, now seen corresponding path program 1 times [2022-11-25 18:33:02,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:33:02,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061782000] [2022-11-25 18:33:02,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:02,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:33:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:33:02,227 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 18:33:02,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:33:02,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061782000] [2022-11-25 18:33:02,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061782000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:33:02,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:33:02,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:33:02,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346418318] [2022-11-25 18:33:02,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:33:02,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:33:02,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:33:02,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:33:02,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:33:02,299 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 227 [2022-11-25 18:33:02,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 49 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 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 18:33:02,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:33:02,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 227 [2022-11-25 18:33:02,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:33:02,484 INFO L130 PetriNetUnfolder]: 1270/1955 cut-off events. [2022-11-25 18:33:02,484 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 18:33:02,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3690 conditions, 1955 events. 1270/1955 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9194 event pairs, 601 based on Foata normal form. 0/1083 useless extension candidates. Maximal degree in co-relation 3686. Up to 1717 conditions per place. [2022-11-25 18:33:02,497 INFO L137 encePairwiseOnDemand]: 224/227 looper letters, 34 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2022-11-25 18:33:02,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 176 flow [2022-11-25 18:33:02,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:33:02,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:33:02,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 343 transitions. [2022-11-25 18:33:02,500 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5036710719530103 [2022-11-25 18:33:02,500 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 343 transitions. [2022-11-25 18:33:02,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 343 transitions. [2022-11-25 18:33:02,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:33:02,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 343 transitions. [2022-11-25 18:33:02,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 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 18:33:02,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 18:33:02,504 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 18:33:02,504 INFO L175 Difference]: Start difference. First operand has 45 places, 49 transitions, 106 flow. Second operand 3 states and 343 transitions. [2022-11-25 18:33:02,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 176 flow [2022-11-25 18:33:02,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:33:02,506 INFO L231 Difference]: Finished difference. Result has 44 places, 48 transitions, 104 flow [2022-11-25 18:33:02,506 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=42, 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=104, PETRI_PLACES=44, PETRI_TRANSITIONS=48} [2022-11-25 18:33:02,507 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -8 predicate places. [2022-11-25 18:33:02,507 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 48 transitions, 104 flow [2022-11-25 18:33:02,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 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 18:33:02,508 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:33:02,508 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:33:02,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:33:02,509 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 18:33:02,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:33:02,510 INFO L85 PathProgramCache]: Analyzing trace with hash 521905678, now seen corresponding path program 1 times [2022-11-25 18:33:02,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:33:02,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276749150] [2022-11-25 18:33:02,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:02,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:33:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:33:02,550 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 18:33:02,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:33:02,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276749150] [2022-11-25 18:33:02,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276749150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:33:02,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:33:02,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:33:02,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863522644] [2022-11-25 18:33:02,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:33:02,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:33:02,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:33:02,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:33:02,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:33:02,583 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 227 [2022-11-25 18:33:02,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 48 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 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 18:33:02,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:33:02,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 227 [2022-11-25 18:33:02,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:33:02,730 INFO L130 PetriNetUnfolder]: 822/1299 cut-off events. [2022-11-25 18:33:02,730 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 18:33:02,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2453 conditions, 1299 events. 822/1299 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5805 event pairs, 366 based on Foata normal form. 0/801 useless extension candidates. Maximal degree in co-relation 2449. Up to 1136 conditions per place. [2022-11-25 18:33:02,738 INFO L137 encePairwiseOnDemand]: 224/227 looper letters, 33 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2022-11-25 18:33:02,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 172 flow [2022-11-25 18:33:02,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:33:02,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:33:02,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2022-11-25 18:33:02,741 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5242290748898678 [2022-11-25 18:33:02,741 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2022-11-25 18:33:02,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2022-11-25 18:33:02,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:33:02,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2022-11-25 18:33:02,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 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 18:33:02,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 18:33:02,745 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 18:33:02,745 INFO L175 Difference]: Start difference. First operand has 44 places, 48 transitions, 104 flow. Second operand 3 states and 357 transitions. [2022-11-25 18:33:02,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 172 flow [2022-11-25 18:33:02,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:33:02,750 INFO L231 Difference]: Finished difference. Result has 43 places, 47 transitions, 102 flow [2022-11-25 18:33:02,750 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=47} [2022-11-25 18:33:02,751 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -9 predicate places. [2022-11-25 18:33:02,751 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 47 transitions, 102 flow [2022-11-25 18:33:02,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 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 18:33:02,752 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:33:02,752 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:33:02,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:33:02,753 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 18:33:02,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:33:02,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1699589181, now seen corresponding path program 1 times [2022-11-25 18:33:02,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:33:02,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048469908] [2022-11-25 18:33:02,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:02,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:33:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:33:02,787 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 18:33:02,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:33:02,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048469908] [2022-11-25 18:33:02,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048469908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:33:02,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:33:02,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:33:02,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367159007] [2022-11-25 18:33:02,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:33:02,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:33:02,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:33:02,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:33:02,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:33:02,800 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 227 [2022-11-25 18:33:02,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 47 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 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 18:33:02,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:33:02,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 227 [2022-11-25 18:33:02,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:33:02,958 INFO L130 PetriNetUnfolder]: 798/1307 cut-off events. [2022-11-25 18:33:02,958 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-25 18:33:02,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2459 conditions, 1307 events. 798/1307 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6010 event pairs, 195 based on Foata normal form. 24/845 useless extension candidates. Maximal degree in co-relation 2455. Up to 754 conditions per place. [2022-11-25 18:33:02,965 INFO L137 encePairwiseOnDemand]: 221/227 looper letters, 50 selfloop transitions, 5 changer transitions 0/67 dead transitions. [2022-11-25 18:33:02,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 67 transitions, 256 flow [2022-11-25 18:33:02,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:33:02,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:33:02,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2022-11-25 18:33:02,968 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.566813509544787 [2022-11-25 18:33:02,968 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2022-11-25 18:33:02,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2022-11-25 18:33:02,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:33:02,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2022-11-25 18:33:02,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 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 18:33:02,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 18:33:02,972 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 18:33:02,972 INFO L175 Difference]: Start difference. First operand has 43 places, 47 transitions, 102 flow. Second operand 3 states and 386 transitions. [2022-11-25 18:33:02,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 67 transitions, 256 flow [2022-11-25 18:33:02,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 67 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:33:02,974 INFO L231 Difference]: Finished difference. Result has 45 places, 49 transitions, 128 flow [2022-11-25 18:33:02,974 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=45, PETRI_TRANSITIONS=49} [2022-11-25 18:33:02,975 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2022-11-25 18:33:02,975 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 49 transitions, 128 flow [2022-11-25 18:33:02,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 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 18:33:02,976 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:33:02,976 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:33:02,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:33:02,977 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr2Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 18:33:02,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:33:02,977 INFO L85 PathProgramCache]: Analyzing trace with hash 754860662, now seen corresponding path program 1 times [2022-11-25 18:33:02,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:33:02,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4470988] [2022-11-25 18:33:02,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:02,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:33:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:33:03,014 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 18:33:03,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:33:03,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4470988] [2022-11-25 18:33:03,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4470988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:33:03,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:33:03,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:33:03,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787140650] [2022-11-25 18:33:03,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:33:03,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:33:03,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:33:03,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:33:03,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:33:03,025 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 227 [2022-11-25 18:33:03,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 49 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 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 18:33:03,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:33:03,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 227 [2022-11-25 18:33:03,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:33:03,204 INFO L130 PetriNetUnfolder]: 741/1220 cut-off events. [2022-11-25 18:33:03,204 INFO L131 PetriNetUnfolder]: For 138/138 co-relation queries the response was YES. [2022-11-25 18:33:03,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2545 conditions, 1220 events. 741/1220 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5509 event pairs, 198 based on Foata normal form. 30/853 useless extension candidates. Maximal degree in co-relation 2540. Up to 752 conditions per place. [2022-11-25 18:33:03,211 INFO L137 encePairwiseOnDemand]: 222/227 looper letters, 50 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2022-11-25 18:33:03,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 66 transitions, 272 flow [2022-11-25 18:33:03,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:33:03,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:33:03,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2022-11-25 18:33:03,213 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5653450807635829 [2022-11-25 18:33:03,214 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2022-11-25 18:33:03,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2022-11-25 18:33:03,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:33:03,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2022-11-25 18:33:03,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 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 18:33:03,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 18:33:03,218 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 18:33:03,218 INFO L175 Difference]: Start difference. First operand has 45 places, 49 transitions, 128 flow. Second operand 3 states and 385 transitions. [2022-11-25 18:33:03,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 66 transitions, 272 flow [2022-11-25 18:33:03,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 66 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:33:03,222 INFO L231 Difference]: Finished difference. Result has 46 places, 49 transitions, 132 flow [2022-11-25 18:33:03,223 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=46, PETRI_TRANSITIONS=49} [2022-11-25 18:33:03,223 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -6 predicate places. [2022-11-25 18:33:03,223 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 49 transitions, 132 flow [2022-11-25 18:33:03,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 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 18:33:03,224 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:33:03,224 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:33:03,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:33:03,225 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 18:33:03,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:33:03,225 INFO L85 PathProgramCache]: Analyzing trace with hash -839855939, now seen corresponding path program 1 times [2022-11-25 18:33:03,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:33:03,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845880599] [2022-11-25 18:33:03,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:03,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:33:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:33:03,273 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 18:33:03,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:33:03,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845880599] [2022-11-25 18:33:03,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845880599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:33:03,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:33:03,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:33:03,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180935221] [2022-11-25 18:33:03,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:33:03,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:33:03,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:33:03,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:33:03,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:33:03,311 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 227 [2022-11-25 18:33:03,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 49 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 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 18:33:03,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:33:03,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 227 [2022-11-25 18:33:03,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:33:03,600 INFO L130 PetriNetUnfolder]: 1123/1780 cut-off events. [2022-11-25 18:33:03,600 INFO L131 PetriNetUnfolder]: For 304/304 co-relation queries the response was YES. [2022-11-25 18:33:03,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3770 conditions, 1780 events. 1123/1780 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7995 event pairs, 220 based on Foata normal form. 22/1338 useless extension candidates. Maximal degree in co-relation 3764. Up to 594 conditions per place. [2022-11-25 18:33:03,610 INFO L137 encePairwiseOnDemand]: 209/227 looper letters, 73 selfloop transitions, 24 changer transitions 2/105 dead transitions. [2022-11-25 18:33:03,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 105 transitions, 473 flow [2022-11-25 18:33:03,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:33:03,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:33:03,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 577 transitions. [2022-11-25 18:33:03,612 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5083700440528635 [2022-11-25 18:33:03,613 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 577 transitions. [2022-11-25 18:33:03,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 577 transitions. [2022-11-25 18:33:03,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:33:03,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 577 transitions. [2022-11-25 18:33:03,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.4) internal successors, (577), 5 states have internal predecessors, (577), 0 states have call successors, (0), 0 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 18:33:03,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 227.0) internal successors, (1362), 6 states have internal predecessors, (1362), 0 states have call successors, (0), 0 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 18:33:03,617 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 227.0) internal successors, (1362), 6 states have internal predecessors, (1362), 0 states have call successors, (0), 0 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 18:33:03,618 INFO L175 Difference]: Start difference. First operand has 46 places, 49 transitions, 132 flow. Second operand 5 states and 577 transitions. [2022-11-25 18:33:03,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 105 transitions, 473 flow [2022-11-25 18:33:03,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 105 transitions, 465 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:33:03,622 INFO L231 Difference]: Finished difference. Result has 53 places, 69 transitions, 310 flow [2022-11-25 18:33:03,623 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=310, PETRI_PLACES=53, PETRI_TRANSITIONS=69} [2022-11-25 18:33:03,623 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2022-11-25 18:33:03,624 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 69 transitions, 310 flow [2022-11-25 18:33:03,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 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 18:33:03,624 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:33:03,624 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:33:03,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:33:03,625 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 18:33:03,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:33:03,625 INFO L85 PathProgramCache]: Analyzing trace with hash -2105257575, now seen corresponding path program 2 times [2022-11-25 18:33:03,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:33:03,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176128044] [2022-11-25 18:33:03,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:03,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:33:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:33:03,702 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 18:33:03,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:33:03,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176128044] [2022-11-25 18:33:03,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176128044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:33:03,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:33:03,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:33:03,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106823153] [2022-11-25 18:33:03,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:33:03,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:33:03,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:33:03,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:33:03,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:33:03,734 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 227 [2022-11-25 18:33:03,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 69 transitions, 310 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 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 18:33:03,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:33:03,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 227 [2022-11-25 18:33:03,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:33:03,934 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([500] L752-->thr1EXIT: Formula: (and (= |v_thr1Thread1of1ForFork1_#res.base_7| 0) (= |v_thr1Thread1of1ForFork1_#res.offset_7| 0) (= v_~flag1~0_106 0) (or (not (<= v_thr1Thread1of1ForFork1_~f21~0_121 3)) (not (<= 2 v_thr1Thread1of1ForFork1_~f21~0_121)))) InVars {thr1Thread1of1ForFork1_~f21~0=v_thr1Thread1of1ForFork1_~f21~0_121} OutVars{thr1Thread1of1ForFork1_~f21~0=v_thr1Thread1of1ForFork1_~f21~0_121, ~flag1~0=v_~flag1~0_106, thr1Thread1of1ForFork1_#res.base=|v_thr1Thread1of1ForFork1_#res.base_7|, thr1Thread1of1ForFork1_#res.offset=|v_thr1Thread1of1ForFork1_#res.offset_7|} AuxVars[] AssignedVars[~flag1~0, thr1Thread1of1ForFork1_#res.base, thr1Thread1of1ForFork1_#res.offset][66], [Black: 150#true, 161#true, Black: 147#(= ~x~0 1), 70#L799true, 21#L819-4true, 62#thr1EXITtrue, 153#(<= 3 thr2Thread1of1ForFork0_~f12~0), Black: 152#(<= 3 ~flag1~0), 119#true, Black: 155#(and (<= 3 ~flag1~0) (<= 3 thr2Thread1of1ForFork0_~f12~0)), Black: 139#true]) [2022-11-25 18:33:03,934 INFO L383 tUnfolder$Statistics]: this new event has 21 ancestors and is cut-off event [2022-11-25 18:33:03,934 INFO L386 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2022-11-25 18:33:03,934 INFO L386 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2022-11-25 18:33:03,935 INFO L386 tUnfolder$Statistics]: existing Event has 20 ancestors and is cut-off event [2022-11-25 18:33:03,942 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([500] L752-->thr1EXIT: Formula: (and (= |v_thr1Thread1of1ForFork1_#res.base_7| 0) (= |v_thr1Thread1of1ForFork1_#res.offset_7| 0) (= v_~flag1~0_106 0) (or (not (<= v_thr1Thread1of1ForFork1_~f21~0_121 3)) (not (<= 2 v_thr1Thread1of1ForFork1_~f21~0_121)))) InVars {thr1Thread1of1ForFork1_~f21~0=v_thr1Thread1of1ForFork1_~f21~0_121} OutVars{thr1Thread1of1ForFork1_~f21~0=v_thr1Thread1of1ForFork1_~f21~0_121, ~flag1~0=v_~flag1~0_106, thr1Thread1of1ForFork1_#res.base=|v_thr1Thread1of1ForFork1_#res.base_7|, thr1Thread1of1ForFork1_#res.offset=|v_thr1Thread1of1ForFork1_#res.offset_7|} AuxVars[] AssignedVars[~flag1~0, thr1Thread1of1ForFork1_#res.base, thr1Thread1of1ForFork1_#res.offset][66], [Black: 150#true, 51#L820-1true, 161#true, Black: 147#(= ~x~0 1), 70#L799true, 62#thr1EXITtrue, 153#(<= 3 thr2Thread1of1ForFork0_~f12~0), Black: 152#(<= 3 ~flag1~0), 119#true, Black: 139#true, Black: 155#(and (<= 3 ~flag1~0) (<= 3 thr2Thread1of1ForFork0_~f12~0))]) [2022-11-25 18:33:03,942 INFO L383 tUnfolder$Statistics]: this new event has 22 ancestors and is cut-off event [2022-11-25 18:33:03,943 INFO L386 tUnfolder$Statistics]: existing Event has 20 ancestors and is cut-off event [2022-11-25 18:33:03,943 INFO L386 tUnfolder$Statistics]: existing Event has 20 ancestors and is cut-off event [2022-11-25 18:33:03,943 INFO L386 tUnfolder$Statistics]: existing Event has 21 ancestors and is cut-off event [2022-11-25 18:33:03,971 INFO L130 PetriNetUnfolder]: 1152/1881 cut-off events. [2022-11-25 18:33:03,971 INFO L131 PetriNetUnfolder]: For 1699/1785 co-relation queries the response was YES. [2022-11-25 18:33:03,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5559 conditions, 1881 events. 1152/1881 cut-off events. For 1699/1785 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9177 event pairs, 374 based on Foata normal form. 36/1717 useless extension candidates. Maximal degree in co-relation 5550. Up to 1388 conditions per place. [2022-11-25 18:33:03,984 INFO L137 encePairwiseOnDemand]: 222/227 looper letters, 70 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2022-11-25 18:33:03,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 91 transitions, 559 flow [2022-11-25 18:33:03,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:33:03,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:33:03,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2022-11-25 18:33:03,986 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.566813509544787 [2022-11-25 18:33:03,987 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2022-11-25 18:33:03,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2022-11-25 18:33:03,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:33:03,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2022-11-25 18:33:03,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 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 18:33:03,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 18:33:03,990 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 18:33:03,990 INFO L175 Difference]: Start difference. First operand has 53 places, 69 transitions, 310 flow. Second operand 3 states and 386 transitions. [2022-11-25 18:33:03,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 91 transitions, 559 flow [2022-11-25 18:33:03,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 91 transitions, 559 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:33:03,998 INFO L231 Difference]: Finished difference. Result has 57 places, 73 transitions, 362 flow [2022-11-25 18:33:03,999 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=362, PETRI_PLACES=57, PETRI_TRANSITIONS=73} [2022-11-25 18:33:03,999 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2022-11-25 18:33:04,000 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 73 transitions, 362 flow [2022-11-25 18:33:04,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 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 18:33:04,000 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:33:04,001 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:33:04,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:33:04,001 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 18:33:04,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:33:04,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1986329061, now seen corresponding path program 1 times [2022-11-25 18:33:04,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:33:04,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305590341] [2022-11-25 18:33:04,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:04,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:33:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:33:04,061 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 18:33:04,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:33:04,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305590341] [2022-11-25 18:33:04,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305590341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:33:04,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:33:04,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:33:04,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418116127] [2022-11-25 18:33:04,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:33:04,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:33:04,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:33:04,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:33:04,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:33:04,095 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 227 [2022-11-25 18:33:04,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 73 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 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 18:33:04,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:33:04,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 227 [2022-11-25 18:33:04,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:33:04,442 INFO L130 PetriNetUnfolder]: 1168/1951 cut-off events. [2022-11-25 18:33:04,442 INFO L131 PetriNetUnfolder]: For 2315/2385 co-relation queries the response was YES. [2022-11-25 18:33:04,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5916 conditions, 1951 events. 1168/1951 cut-off events. For 2315/2385 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9493 event pairs, 308 based on Foata normal form. 72/1889 useless extension candidates. Maximal degree in co-relation 5905. Up to 906 conditions per place. [2022-11-25 18:33:04,454 INFO L137 encePairwiseOnDemand]: 210/227 looper letters, 87 selfloop transitions, 23 changer transitions 15/137 dead transitions. [2022-11-25 18:33:04,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 137 transitions, 901 flow [2022-11-25 18:33:04,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:33:04,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:33:04,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 574 transitions. [2022-11-25 18:33:04,457 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.505726872246696 [2022-11-25 18:33:04,457 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 574 transitions. [2022-11-25 18:33:04,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 574 transitions. [2022-11-25 18:33:04,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:33:04,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 574 transitions. [2022-11-25 18:33:04,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 0 states have call successors, (0), 0 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 18:33:04,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 227.0) internal successors, (1362), 6 states have internal predecessors, (1362), 0 states have call successors, (0), 0 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 18:33:04,462 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 227.0) internal successors, (1362), 6 states have internal predecessors, (1362), 0 states have call successors, (0), 0 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 18:33:04,462 INFO L175 Difference]: Start difference. First operand has 57 places, 73 transitions, 362 flow. Second operand 5 states and 574 transitions. [2022-11-25 18:33:04,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 137 transitions, 901 flow [2022-11-25 18:33:04,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 137 transitions, 860 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-25 18:33:04,472 INFO L231 Difference]: Finished difference. Result has 59 places, 82 transitions, 491 flow [2022-11-25 18:33:04,472 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=491, PETRI_PLACES=59, PETRI_TRANSITIONS=82} [2022-11-25 18:33:04,473 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2022-11-25 18:33:04,473 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 82 transitions, 491 flow [2022-11-25 18:33:04,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 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 18:33:04,474 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:33:04,474 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:33:04,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 18:33:04,475 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 18:33:04,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:33:04,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1878592292, now seen corresponding path program 1 times [2022-11-25 18:33:04,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:33:04,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800012361] [2022-11-25 18:33:04,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:04,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:33:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:33:04,526 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 18:33:04,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:33:04,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800012361] [2022-11-25 18:33:04,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800012361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:33:04,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:33:04,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:33:04,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529588575] [2022-11-25 18:33:04,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:33:04,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:33:04,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:33:04,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:33:04,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:33:04,548 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 227 [2022-11-25 18:33:04,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 82 transitions, 491 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 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 18:33:04,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:33:04,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 227 [2022-11-25 18:33:04,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:33:04,789 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([481] L787-->L792: Formula: (and (= 4 v_thr2Thread1of1ForFork0_~f12~0_In_1) (= v_~flag2~0_Out_2 4)) InVars {thr2Thread1of1ForFork0_~f12~0=v_thr2Thread1of1ForFork0_~f12~0_In_1} OutVars{~flag2~0=v_~flag2~0_Out_2, thr2Thread1of1ForFork0_~f12~0=v_thr2Thread1of1ForFork0_~f12~0_In_1} AuxVars[] AssignedVars[~flag2~0][83], [Black: 150#true, Black: 163#(= ~flag1~0 1), 43#L742true, 155#(and (<= 3 ~flag1~0) (<= 3 thr2Thread1of1ForFork0_~f12~0)), Black: 170#(<= 4 thr1Thread1of1ForFork1_~f21~0), 119#true, Black: 139#true, Black: 172#(and (<= 4 thr1Thread1of1ForFork1_~f21~0) (<= 4 ~flag2~0)), Black: 167#true, 169#(<= 4 ~flag2~0), 21#L819-4true, Black: 152#(<= 3 ~flag1~0), 89#L792true, Black: 153#(<= 3 thr2Thread1of1ForFork0_~f12~0), 178#true]) [2022-11-25 18:33:04,790 INFO L383 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2022-11-25 18:33:04,790 INFO L386 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2022-11-25 18:33:04,790 INFO L386 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2022-11-25 18:33:04,790 INFO L386 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2022-11-25 18:33:04,798 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([481] L787-->L792: Formula: (and (= 4 v_thr2Thread1of1ForFork0_~f12~0_In_1) (= v_~flag2~0_Out_2 4)) InVars {thr2Thread1of1ForFork0_~f12~0=v_thr2Thread1of1ForFork0_~f12~0_In_1} OutVars{~flag2~0=v_~flag2~0_Out_2, thr2Thread1of1ForFork0_~f12~0=v_thr2Thread1of1ForFork0_~f12~0_In_1} AuxVars[] AssignedVars[~flag2~0][83], [Black: 150#true, Black: 163#(= ~flag1~0 1), 43#L742true, 155#(and (<= 3 ~flag1~0) (<= 3 thr2Thread1of1ForFork0_~f12~0)), Black: 170#(<= 4 thr1Thread1of1ForFork1_~f21~0), 119#true, Black: 139#true, Black: 172#(and (<= 4 thr1Thread1of1ForFork1_~f21~0) (<= 4 ~flag2~0)), 51#L820-1true, Black: 167#true, 169#(<= 4 ~flag2~0), Black: 152#(<= 3 ~flag1~0), 89#L792true, Black: 153#(<= 3 thr2Thread1of1ForFork0_~f12~0), 178#true]) [2022-11-25 18:33:04,798 INFO L383 tUnfolder$Statistics]: this new event has 20 ancestors and is cut-off event [2022-11-25 18:33:04,799 INFO L386 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2022-11-25 18:33:04,799 INFO L386 tUnfolder$Statistics]: existing Event has 20 ancestors and is cut-off event [2022-11-25 18:33:04,799 INFO L386 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2022-11-25 18:33:04,859 INFO L130 PetriNetUnfolder]: 1297/2204 cut-off events. [2022-11-25 18:33:04,859 INFO L131 PetriNetUnfolder]: For 5028/5172 co-relation queries the response was YES. [2022-11-25 18:33:04,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8064 conditions, 2204 events. 1297/2204 cut-off events. For 5028/5172 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11460 event pairs, 289 based on Foata normal form. 58/2116 useless extension candidates. Maximal degree in co-relation 8052. Up to 1334 conditions per place. [2022-11-25 18:33:04,875 INFO L137 encePairwiseOnDemand]: 220/227 looper letters, 87 selfloop transitions, 8 changer transitions 1/116 dead transitions. [2022-11-25 18:33:04,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 116 transitions, 888 flow [2022-11-25 18:33:04,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:33:04,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:33:04,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2022-11-25 18:33:04,878 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5682819383259912 [2022-11-25 18:33:04,878 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2022-11-25 18:33:04,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2022-11-25 18:33:04,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:33:04,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2022-11-25 18:33:04,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 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 18:33:04,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 18:33:04,881 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 18:33:04,882 INFO L175 Difference]: Start difference. First operand has 59 places, 82 transitions, 491 flow. Second operand 3 states and 387 transitions. [2022-11-25 18:33:04,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 116 transitions, 888 flow [2022-11-25 18:33:04,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 116 transitions, 888 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:33:04,892 INFO L231 Difference]: Finished difference. Result has 62 places, 89 transitions, 583 flow [2022-11-25 18:33:04,892 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=583, PETRI_PLACES=62, PETRI_TRANSITIONS=89} [2022-11-25 18:33:04,893 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 10 predicate places. [2022-11-25 18:33:04,893 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 89 transitions, 583 flow [2022-11-25 18:33:04,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 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 18:33:04,894 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:33:04,894 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:33:04,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 18:33:04,894 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 18:33:04,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:33:04,895 INFO L85 PathProgramCache]: Analyzing trace with hash 437969806, now seen corresponding path program 2 times [2022-11-25 18:33:04,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:33:04,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647859559] [2022-11-25 18:33:04,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:04,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:33:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:33:05,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:33:05,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:33:05,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647859559] [2022-11-25 18:33:05,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647859559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:33:05,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:33:05,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:33:05,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242515436] [2022-11-25 18:33:05,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:33:05,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:33:05,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:33:05,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:33:05,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:33:05,319 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 227 [2022-11-25 18:33:05,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 89 transitions, 583 flow. Second operand has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 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 18:33:05,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:33:05,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 227 [2022-11-25 18:33:05,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:33:05,613 INFO L130 PetriNetUnfolder]: 1285/2185 cut-off events. [2022-11-25 18:33:05,613 INFO L131 PetriNetUnfolder]: For 6399/6547 co-relation queries the response was YES. [2022-11-25 18:33:05,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8536 conditions, 2185 events. 1285/2185 cut-off events. For 6399/6547 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11445 event pairs, 406 based on Foata normal form. 61/2110 useless extension candidates. Maximal degree in co-relation 8522. Up to 1826 conditions per place. [2022-11-25 18:33:05,622 INFO L137 encePairwiseOnDemand]: 225/227 looper letters, 0 selfloop transitions, 0 changer transitions 88/88 dead transitions. [2022-11-25 18:33:05,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 88 transitions, 717 flow [2022-11-25 18:33:05,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:33:05,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:33:05,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2022-11-25 18:33:05,624 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5080763582966226 [2022-11-25 18:33:05,624 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2022-11-25 18:33:05,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2022-11-25 18:33:05,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:33:05,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2022-11-25 18:33:05,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 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 18:33:05,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 18:33:05,628 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 18:33:05,628 INFO L175 Difference]: Start difference. First operand has 62 places, 89 transitions, 583 flow. Second operand 3 states and 346 transitions. [2022-11-25 18:33:05,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 88 transitions, 717 flow [2022-11-25 18:33:05,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 88 transitions, 701 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:33:05,642 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2022-11-25 18:33:05,642 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2022-11-25 18:33:05,645 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2022-11-25 18:33:05,645 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2022-11-25 18:33:05,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 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 18:33:05,648 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONMEMORY_LEAK (14 of 15 remaining) [2022-11-25 18:33:05,649 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2022-11-25 18:33:05,649 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2022-11-25 18:33:05,649 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2022-11-25 18:33:05,650 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2022-11-25 18:33:05,650 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2022-11-25 18:33:05,650 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2022-11-25 18:33:05,650 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2022-11-25 18:33:05,650 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2022-11-25 18:33:05,651 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2022-11-25 18:33:05,651 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (4 of 15 remaining) [2022-11-25 18:33:05,651 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 15 remaining) [2022-11-25 18:33:05,651 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 15 remaining) [2022-11-25 18:33:05,651 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 15 remaining) [2022-11-25 18:33:05,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2022-11-25 18:33:05,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 18:33:05,652 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:33:05,659 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 18:33:05,659 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 18:33:05,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:33:05 BasicIcfg [2022-11-25 18:33:05,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 18:33:05,665 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 18:33:05,665 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 18:33:05,665 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 18:33:05,665 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:32:56" (3/4) ... [2022-11-25 18:33:05,668 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 18:33:05,674 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2022-11-25 18:33:05,675 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2022-11-25 18:33:05,678 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-25 18:33:05,679 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 18:33:05,679 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-25 18:33:05,679 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 18:33:05,710 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15954334-dfaa-4c27-85a1-33a174e5fded/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 18:33:05,710 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 18:33:05,711 INFO L158 Benchmark]: Toolchain (without parser) took 10531.51ms. Allocated memory was 186.6MB in the beginning and 270.5MB in the end (delta: 83.9MB). Free memory was 135.6MB in the beginning and 184.4MB in the end (delta: -48.8MB). Peak memory consumption was 37.8MB. Max. memory is 16.1GB. [2022-11-25 18:33:05,711 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 121.6MB. Free memory was 93.8MB in the beginning and 93.8MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:33:05,712 INFO L158 Benchmark]: CACSL2BoogieTranslator took 786.66ms. Allocated memory is still 186.6MB. Free memory was 135.6MB in the beginning and 108.9MB in the end (delta: 26.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-25 18:33:05,712 INFO L158 Benchmark]: Boogie Procedure Inliner took 100.92ms. Allocated memory is still 186.6MB. Free memory was 108.9MB in the beginning and 155.9MB in the end (delta: -47.0MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2022-11-25 18:33:05,712 INFO L158 Benchmark]: Boogie Preprocessor took 51.85ms. Allocated memory is still 186.6MB. Free memory was 155.9MB in the beginning and 154.1MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 18:33:05,713 INFO L158 Benchmark]: RCFGBuilder took 510.47ms. Allocated memory is still 186.6MB. Free memory was 154.1MB in the beginning and 138.4MB in the end (delta: 15.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 18:33:05,713 INFO L158 Benchmark]: TraceAbstraction took 8998.35ms. Allocated memory was 186.6MB in the beginning and 270.5MB in the end (delta: 83.9MB). Free memory was 137.4MB in the beginning and 187.6MB in the end (delta: -50.2MB). Peak memory consumption was 145.8MB. Max. memory is 16.1GB. [2022-11-25 18:33:05,714 INFO L158 Benchmark]: Witness Printer took 46.02ms. Allocated memory is still 270.5MB. Free memory was 187.6MB in the beginning and 184.4MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:33:05,716 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 121.6MB. Free memory was 93.8MB in the beginning and 93.8MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 786.66ms. Allocated memory is still 186.6MB. Free memory was 135.6MB in the beginning and 108.9MB in the end (delta: 26.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 100.92ms. Allocated memory is still 186.6MB. Free memory was 108.9MB in the beginning and 155.9MB in the end (delta: -47.0MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.85ms. Allocated memory is still 186.6MB. Free memory was 155.9MB in the beginning and 154.1MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 510.47ms. Allocated memory is still 186.6MB. Free memory was 154.1MB in the beginning and 138.4MB in the end (delta: 15.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8998.35ms. Allocated memory was 186.6MB in the beginning and 270.5MB in the end (delta: 83.9MB). Free memory was 137.4MB in the beginning and 187.6MB in the end (delta: -50.2MB). Peak memory consumption was 145.8MB. Max. memory is 16.1GB. * Witness Printer took 46.02ms. Allocated memory is still 270.5MB. Free memory was 187.6MB in the beginning and 184.4MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 109 PlacesBefore, 52 PlacesAfterwards, 122 TransitionsBefore, 56 TransitionsAfterwards, 4248 CoEnabledTransitionPairs, 5 FixpointIterations, 32 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 9 ChoiceCompositions, 98 TotalNumberOfCompositions, 9644 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4334, independent: 4105, independent conditional: 0, independent unconditional: 4105, dependent: 229, dependent conditional: 0, dependent unconditional: 229, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2493, independent: 2446, independent conditional: 0, independent unconditional: 2446, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2493, independent: 2438, independent conditional: 0, independent unconditional: 2438, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 55, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 77, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4334, independent: 1659, independent conditional: 0, independent unconditional: 1659, dependent: 182, dependent conditional: 0, dependent unconditional: 182, unknown: 2493, unknown conditional: 0, unknown unconditional: 2493] , Statistics on independence cache: Total cache size (in pairs): 288, Positive cache size: 256, Positive conditional cache size: 0, Positive unconditional cache size: 256, Negative cache size: 32, Negative conditional cache size: 0, Negative unconditional cache size: 32, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 802]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 745]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 816]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 166 locations, 15 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.8s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 901 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 584 mSDsluCounter, 64 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 104 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1284 IncrementalHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 104 mSolverCounterUnsat, 58 mSDtfsCounter, 1284 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=583occurred in iteration=11, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 138 ConstructedInterpolants, 0 QuantifiedInterpolants, 676 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 18:33:05,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15954334-dfaa-4c27-85a1-33a174e5fded/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE