./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe001_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dffe498-4a2e-4eb4-8f23-c564c0ddc7b0/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dffe498-4a2e-4eb4-8f23-c564c0ddc7b0/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_5dffe498-4a2e-4eb4-8f23-c564c0ddc7b0/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dffe498-4a2e-4eb4-8f23-c564c0ddc7b0/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe001_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dffe498-4a2e-4eb4-8f23-c564c0ddc7b0/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_5dffe498-4a2e-4eb4-8f23-c564c0ddc7b0/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 0d3dfcdcbd1ef266a13f83c8ffcd1431cdbd44aa9b3fb0ca280daf8703879343 --- 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 18:27:35,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:27:35,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:27:35,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:27:35,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:27:35,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:27:35,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:27:35,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:27:35,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:27:35,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:27:35,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:27:35,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:27:35,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:27:35,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:27:35,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:27:35,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:27:35,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:27:35,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:27:35,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:27:35,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:27:35,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:27:35,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:27:35,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:27:35,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:27:35,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:27:35,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:27:35,796 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:27:35,798 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:27:35,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:27:35,799 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:27:35,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:27:35,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:27:35,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:27:35,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:27:35,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:27:35,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:27:35,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:27:35,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:27:35,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:27:35,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:27:35,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:27:35,820 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dffe498-4a2e-4eb4-8f23-c564c0ddc7b0/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 18:27:35,845 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:27:35,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:27:35,845 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:27:35,846 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:27:35,846 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:27:35,846 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:27:35,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:27:35,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:27:35,848 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:27:35,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:27:35,848 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:27:35,848 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:27:35,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:27:35,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:27:35,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:27:35,849 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 18:27:35,850 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 18:27:35,850 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 18:27:35,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:27:35,850 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:27:35,850 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:27:35,851 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:27:35,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:27:35,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:27:35,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:27:35,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:27:35,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:27:35,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:27:35,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:27:35,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:27:35,853 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:27:35,853 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:27:35,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:27:35,853 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_5dffe498-4a2e-4eb4-8f23-c564c0ddc7b0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dffe498-4a2e-4eb4-8f23-c564c0ddc7b0/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d3dfcdcbd1ef266a13f83c8ffcd1431cdbd44aa9b3fb0ca280daf8703879343 [2022-11-25 18:27:36,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:27:36,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:27:36,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:27:36,190 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:27:36,190 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:27:36,191 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dffe498-4a2e-4eb4-8f23-c564c0ddc7b0/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-wmm/safe001_rmo.oepc.i [2022-11-25 18:27:39,226 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:27:39,506 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:27:39,506 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dffe498-4a2e-4eb4-8f23-c564c0ddc7b0/sv-benchmarks/c/pthread-wmm/safe001_rmo.oepc.i [2022-11-25 18:27:39,521 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dffe498-4a2e-4eb4-8f23-c564c0ddc7b0/bin/uautomizer-ZsLfNo2U6R/data/f5cd530d7/554cd21bf9f24dd182dd463f2bccb41c/FLAG6c069e8a6 [2022-11-25 18:27:39,536 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dffe498-4a2e-4eb4-8f23-c564c0ddc7b0/bin/uautomizer-ZsLfNo2U6R/data/f5cd530d7/554cd21bf9f24dd182dd463f2bccb41c [2022-11-25 18:27:39,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:27:39,541 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:27:39,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:27:39,542 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:27:39,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:27:39,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:27:39" (1/1) ... [2022-11-25 18:27:39,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a8c32ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:39, skipping insertion in model container [2022-11-25 18:27:39,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:27:39" (1/1) ... [2022-11-25 18:27:39,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:27:39,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:27:39,792 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_5dffe498-4a2e-4eb4-8f23-c564c0ddc7b0/sv-benchmarks/c/pthread-wmm/safe001_rmo.oepc.i[993,1006] [2022-11-25 18:27:39,970 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:39,999 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:39,999 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,000 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,002 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,002 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,009 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,012 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,012 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,018 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,019 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,019 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,020 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,032 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,039 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,040 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,041 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,048 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,050 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,050 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,063 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,065 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,070 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,071 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,082 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:27:40,105 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:27:40,123 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_5dffe498-4a2e-4eb4-8f23-c564c0ddc7b0/sv-benchmarks/c/pthread-wmm/safe001_rmo.oepc.i[993,1006] [2022-11-25 18:27:40,175 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,181 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,188 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,188 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,189 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,189 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,190 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,191 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,192 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,194 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,194 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,195 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,196 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,198 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,200 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,201 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,201 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,206 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,207 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,207 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,208 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,210 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,210 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,210 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,214 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,215 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,215 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,217 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,217 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:27:40,222 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:27:40,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:27:40,260 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:27:40,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:40 WrapperNode [2022-11-25 18:27:40,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:27:40,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:27:40,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:27:40,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:27:40,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:40" (1/1) ... [2022-11-25 18:27:40,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:40" (1/1) ... [2022-11-25 18:27:40,346 INFO L138 Inliner]: procedures = 176, calls = 82, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 170 [2022-11-25 18:27:40,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:27:40,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:27:40,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:27:40,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:27:40,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:40" (1/1) ... [2022-11-25 18:27:40,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:40" (1/1) ... [2022-11-25 18:27:40,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:40" (1/1) ... [2022-11-25 18:27:40,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:40" (1/1) ... [2022-11-25 18:27:40,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:40" (1/1) ... [2022-11-25 18:27:40,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:40" (1/1) ... [2022-11-25 18:27:40,415 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:40" (1/1) ... [2022-11-25 18:27:40,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:40" (1/1) ... [2022-11-25 18:27:40,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:27:40,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:27:40,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:27:40,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:27:40,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:40" (1/1) ... [2022-11-25 18:27:40,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:27:40,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dffe498-4a2e-4eb4-8f23-c564c0ddc7b0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:40,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dffe498-4a2e-4eb4-8f23-c564c0ddc7b0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:27:40,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dffe498-4a2e-4eb4-8f23-c564c0ddc7b0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:27:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:27:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:27:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 18:27:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:27:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:27:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:27:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-25 18:27:40,505 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-25 18:27:40,506 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-25 18:27:40,506 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-25 18:27:40,506 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-25 18:27:40,506 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-25 18:27:40,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:27:40,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 18:27:40,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:27:40,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:27:40,508 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 18:27:40,756 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:27:40,758 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:27:41,485 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:27:42,428 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:27:42,428 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 18:27:42,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:27:42 BoogieIcfgContainer [2022-11-25 18:27:42,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:27:42,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:27:42,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:27:42,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:27:42,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:27:39" (1/3) ... [2022-11-25 18:27:42,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26281316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:27:42, skipping insertion in model container [2022-11-25 18:27:42,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:40" (2/3) ... [2022-11-25 18:27:42,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26281316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:27:42, skipping insertion in model container [2022-11-25 18:27:42,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:27:42" (3/3) ... [2022-11-25 18:27:42,445 INFO L112 eAbstractionObserver]: Analyzing ICFG safe001_rmo.oepc.i [2022-11-25 18:27:42,467 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:27:42,467 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 62 error locations. [2022-11-25 18:27:42,467 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:27:42,648 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 18:27:42,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 195 transitions, 405 flow [2022-11-25 18:27:42,848 INFO L130 PetriNetUnfolder]: 2/192 cut-off events. [2022-11-25 18:27:42,848 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:27:42,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 192 events. 2/192 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 336 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 132. Up to 2 conditions per place. [2022-11-25 18:27:42,855 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 195 transitions, 405 flow [2022-11-25 18:27:42,868 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 192 transitions, 393 flow [2022-11-25 18:27:42,872 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:27:42,902 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 200 places, 192 transitions, 393 flow [2022-11-25 18:27:42,907 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 200 places, 192 transitions, 393 flow [2022-11-25 18:27:42,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 192 transitions, 393 flow [2022-11-25 18:27:42,999 INFO L130 PetriNetUnfolder]: 2/192 cut-off events. [2022-11-25 18:27:42,999 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:27:43,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 192 events. 2/192 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 337 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 132. Up to 2 conditions per place. [2022-11-25 18:27:43,007 INFO L119 LiptonReduction]: Number of co-enabled transitions 8948 [2022-11-25 18:28:21,233 INFO L134 LiptonReduction]: Checked pairs total: 39622 [2022-11-25 18:28:21,234 INFO L136 LiptonReduction]: Total number of compositions: 195 [2022-11-25 18:28:21,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:28:21,257 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;@281fb0eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:28:21,258 INFO L358 AbstractCegarLoop]: Starting to check reachability of 101 error locations. [2022-11-25 18:28:21,260 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-11-25 18:28:21,261 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:28:21,261 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:28:21,262 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 18:28:21,262 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:28:21,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:21,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1241, now seen corresponding path program 1 times [2022-11-25 18:28:21,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:21,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851275015] [2022-11-25 18:28:21,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:21,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:21,422 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 18:28:21,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:21,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851275015] [2022-11-25 18:28:21,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851275015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:28:21,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:28:21,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 18:28:21,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704102812] [2022-11-25 18:28:21,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:28:21,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:28:21,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:28:21,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:28:21,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:28:21,476 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 390 [2022-11-25 18:28:21,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 88 transitions, 185 flow. Second operand has 2 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states 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 18:28:21,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:28:21,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 390 [2022-11-25 18:28:21,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:28:26,133 INFO L130 PetriNetUnfolder]: 13766/19438 cut-off events. [2022-11-25 18:28:26,133 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-25 18:28:26,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38877 conditions, 19438 events. 13766/19438 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 1494. Compared 130377 event pairs, 13766 based on Foata normal form. 0/8252 useless extension candidates. Maximal degree in co-relation 38866. Up to 19343 conditions per place. [2022-11-25 18:28:26,292 INFO L137 encePairwiseOnDemand]: 350/390 looper letters, 42 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2022-11-25 18:28:26,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 48 transitions, 189 flow [2022-11-25 18:28:26,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:28:26,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 18:28:26,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 348 transitions. [2022-11-25 18:28:26,312 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4461538461538462 [2022-11-25 18:28:26,313 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 348 transitions. [2022-11-25 18:28:26,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 348 transitions. [2022-11-25 18:28:26,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:28:26,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 348 transitions. [2022-11-25 18:28:26,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 174.0) internal successors, (348), 2 states have internal predecessors, (348), 0 states have call successors, (0), 0 states 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 18:28:26,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 390.0) internal successors, (1170), 3 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states 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 18:28:26,335 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 390.0) internal successors, (1170), 3 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states 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 18:28:26,337 INFO L175 Difference]: Start difference. First operand has 97 places, 88 transitions, 185 flow. Second operand 2 states and 348 transitions. [2022-11-25 18:28:26,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 48 transitions, 189 flow [2022-11-25 18:28:26,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 48 transitions, 186 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 18:28:26,346 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 102 flow [2022-11-25 18:28:26,349 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=102, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2022-11-25 18:28:26,353 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, -41 predicate places. [2022-11-25 18:28:26,353 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 102 flow [2022-11-25 18:28:26,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states 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 18:28:26,354 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:28:26,354 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:28:26,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:28:26,355 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:28:26,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:26,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1224168, now seen corresponding path program 1 times [2022-11-25 18:28:26,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:26,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028702823] [2022-11-25 18:28:26,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:26,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:26,691 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 18:28:26,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:26,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028702823] [2022-11-25 18:28:26,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028702823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:28:26,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:28:26,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:28:26,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725002623] [2022-11-25 18:28:26,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:28:26,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:28:26,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:28:26,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:28:26,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:28:26,740 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 390 [2022-11-25 18:28:26,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states 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 18:28:26,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:28:26,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 390 [2022-11-25 18:28:26,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:28:29,021 INFO L130 PetriNetUnfolder]: 5696/8190 cut-off events. [2022-11-25 18:28:29,021 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:28:29,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16384 conditions, 8190 events. 5696/8190 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 49934 event pairs, 5696 based on Foata normal form. 404/4888 useless extension candidates. Maximal degree in co-relation 16381. Up to 8133 conditions per place. [2022-11-25 18:28:29,079 INFO L137 encePairwiseOnDemand]: 381/390 looper letters, 34 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2022-11-25 18:28:29,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 40 transitions, 156 flow [2022-11-25 18:28:29,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:28:29,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:28:29,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2022-11-25 18:28:29,083 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3700854700854701 [2022-11-25 18:28:29,083 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2022-11-25 18:28:29,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2022-11-25 18:28:29,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:28:29,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2022-11-25 18:28:29,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states 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 18:28:29,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states 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 18:28:29,092 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states 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 18:28:29,093 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 102 flow. Second operand 3 states and 433 transitions. [2022-11-25 18:28:29,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 40 transitions, 156 flow [2022-11-25 18:28:29,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 40 transitions, 156 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:28:29,095 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 88 flow [2022-11-25 18:28:29,095 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2022-11-25 18:28:29,096 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, -47 predicate places. [2022-11-25 18:28:29,096 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 88 flow [2022-11-25 18:28:29,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states 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 18:28:29,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:28:29,098 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:28:29,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:28:29,099 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:28:29,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:29,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1224167, now seen corresponding path program 1 times [2022-11-25 18:28:29,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:29,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283036184] [2022-11-25 18:28:29,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:29,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:29,214 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 18:28:29,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:29,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283036184] [2022-11-25 18:28:29,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283036184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:28:29,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:28:29,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:28:29,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910540330] [2022-11-25 18:28:29,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:28:29,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:28:29,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:28:29,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:28:29,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:28:29,283 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 390 [2022-11-25 18:28:29,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 18:28:29,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:28:29,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 390 [2022-11-25 18:28:29,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:28:30,585 INFO L130 PetriNetUnfolder]: 5077/7862 cut-off events. [2022-11-25 18:28:30,586 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:28:30,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15666 conditions, 7862 events. 5077/7862 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 49644 event pairs, 2879 based on Foata normal form. 0/5878 useless extension candidates. Maximal degree in co-relation 15662. Up to 4172 conditions per place. [2022-11-25 18:28:30,626 INFO L137 encePairwiseOnDemand]: 368/390 looper letters, 38 selfloop transitions, 11 changer transitions 0/50 dead transitions. [2022-11-25 18:28:30,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 50 transitions, 206 flow [2022-11-25 18:28:30,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:28:30,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:28:30,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2022-11-25 18:28:30,631 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3717948717948718 [2022-11-25 18:28:30,631 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2022-11-25 18:28:30,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2022-11-25 18:28:30,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:28:30,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2022-11-25 18:28:30,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states 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 18:28:30,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states 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 18:28:30,637 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states 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 18:28:30,637 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 88 flow. Second operand 3 states and 435 transitions. [2022-11-25 18:28:30,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 50 transitions, 206 flow [2022-11-25 18:28:30,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:28:30,639 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 177 flow [2022-11-25 18:28:30,639 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2022-11-25 18:28:30,642 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, -47 predicate places. [2022-11-25 18:28:30,642 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 177 flow [2022-11-25 18:28:30,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 18:28:30,643 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:28:30,643 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:28:30,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:28:30,644 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:28:30,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:30,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1362023475, now seen corresponding path program 1 times [2022-11-25 18:28:30,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:30,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204160299] [2022-11-25 18:28:30,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:30,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:30,901 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 18:28:30,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:30,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204160299] [2022-11-25 18:28:30,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204160299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:28:30,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:28:30,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:28:30,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944126614] [2022-11-25 18:28:30,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:28:30,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:28:30,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:28:30,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:28:30,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:28:30,908 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 390 [2022-11-25 18:28:30,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states 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 18:28:30,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:28:30,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 390 [2022-11-25 18:28:30,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:28:32,141 INFO L130 PetriNetUnfolder]: 4649/7618 cut-off events. [2022-11-25 18:28:32,141 INFO L131 PetriNetUnfolder]: For 2697/2822 co-relation queries the response was YES. [2022-11-25 18:28:32,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21037 conditions, 7618 events. 4649/7618 cut-off events. For 2697/2822 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 53152 event pairs, 1867 based on Foata normal form. 0/6577 useless extension candidates. Maximal degree in co-relation 21032. Up to 4127 conditions per place. [2022-11-25 18:28:32,196 INFO L137 encePairwiseOnDemand]: 386/390 looper letters, 67 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2022-11-25 18:28:32,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 77 transitions, 433 flow [2022-11-25 18:28:32,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:28:32,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:28:32,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 455 transitions. [2022-11-25 18:28:32,199 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2022-11-25 18:28:32,199 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 455 transitions. [2022-11-25 18:28:32,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 455 transitions. [2022-11-25 18:28:32,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:28:32,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 455 transitions. [2022-11-25 18:28:32,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 18:28:32,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states 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 18:28:32,205 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states 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 18:28:32,207 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 177 flow. Second operand 3 states and 455 transitions. [2022-11-25 18:28:32,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 77 transitions, 433 flow [2022-11-25 18:28:32,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 77 transitions, 397 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:28:32,302 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 168 flow [2022-11-25 18:28:32,302 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2022-11-25 18:28:32,304 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, -46 predicate places. [2022-11-25 18:28:32,304 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 168 flow [2022-11-25 18:28:32,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states 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 18:28:32,305 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:28:32,305 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:28:32,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:28:32,306 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:28:32,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:32,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1362023781, now seen corresponding path program 1 times [2022-11-25 18:28:32,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:32,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039274924] [2022-11-25 18:28:32,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:32,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:32,480 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 18:28:32,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:32,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039274924] [2022-11-25 18:28:32,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039274924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:28:32,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:28:32,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:28:32,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568146811] [2022-11-25 18:28:32,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:28:32,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:28:32,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:28:32,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:28:32,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:28:32,488 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 390 [2022-11-25 18:28:32,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states 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 18:28:32,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:28:32,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 390 [2022-11-25 18:28:32,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:28:34,043 INFO L130 PetriNetUnfolder]: 6126/9477 cut-off events. [2022-11-25 18:28:34,043 INFO L131 PetriNetUnfolder]: For 2640/2720 co-relation queries the response was YES. [2022-11-25 18:28:34,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25709 conditions, 9477 events. 6126/9477 cut-off events. For 2640/2720 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 60778 event pairs, 2117 based on Foata normal form. 12/7414 useless extension candidates. Maximal degree in co-relation 25703. Up to 7988 conditions per place. [2022-11-25 18:28:34,105 INFO L137 encePairwiseOnDemand]: 386/390 looper letters, 68 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2022-11-25 18:28:34,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 77 transitions, 420 flow [2022-11-25 18:28:34,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:28:34,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:28:34,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2022-11-25 18:28:34,113 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3837606837606838 [2022-11-25 18:28:34,113 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2022-11-25 18:28:34,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2022-11-25 18:28:34,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:28:34,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2022-11-25 18:28:34,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states 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 18:28:34,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states 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 18:28:34,120 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states 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 18:28:34,120 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 168 flow. Second operand 3 states and 449 transitions. [2022-11-25 18:28:34,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 77 transitions, 420 flow [2022-11-25 18:28:34,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 77 transitions, 410 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:28:34,126 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 181 flow [2022-11-25 18:28:34,126 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2022-11-25 18:28:34,129 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, -45 predicate places. [2022-11-25 18:28:34,129 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 181 flow [2022-11-25 18:28:34,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states 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 18:28:34,130 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:28:34,130 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:28:34,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:28:34,131 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:28:34,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:34,134 INFO L85 PathProgramCache]: Analyzing trace with hash -102940674, now seen corresponding path program 1 times [2022-11-25 18:28:34,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:34,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076143080] [2022-11-25 18:28:34,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:34,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:34,534 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 18:28:34,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:34,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076143080] [2022-11-25 18:28:34,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076143080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:28:34,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:28:34,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:28:34,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822431289] [2022-11-25 18:28:34,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:28:34,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:28:34,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:28:34,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:28:34,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:28:34,632 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 390 [2022-11-25 18:28:34,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 18:28:34,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:28:34,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 390 [2022-11-25 18:28:34,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:28:36,099 INFO L130 PetriNetUnfolder]: 5530/8753 cut-off events. [2022-11-25 18:28:36,099 INFO L131 PetriNetUnfolder]: For 1544/1633 co-relation queries the response was YES. [2022-11-25 18:28:36,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24024 conditions, 8753 events. 5530/8753 cut-off events. For 1544/1633 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 57577 event pairs, 2431 based on Foata normal form. 0/6573 useless extension candidates. Maximal degree in co-relation 24017. Up to 4980 conditions per place. [2022-11-25 18:28:36,150 INFO L137 encePairwiseOnDemand]: 387/390 looper letters, 67 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2022-11-25 18:28:36,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 78 transitions, 424 flow [2022-11-25 18:28:36,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:28:36,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:28:36,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 553 transitions. [2022-11-25 18:28:36,154 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3544871794871795 [2022-11-25 18:28:36,154 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 553 transitions. [2022-11-25 18:28:36,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 553 transitions. [2022-11-25 18:28:36,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:28:36,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 553 transitions. [2022-11-25 18:28:36,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.25) internal successors, (553), 4 states have internal predecessors, (553), 0 states have call successors, (0), 0 states 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 18:28:36,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:36,161 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:36,161 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 181 flow. Second operand 4 states and 553 transitions. [2022-11-25 18:28:36,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 78 transitions, 424 flow [2022-11-25 18:28:36,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 420 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:28:36,176 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 180 flow [2022-11-25 18:28:36,176 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2022-11-25 18:28:36,177 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, -44 predicate places. [2022-11-25 18:28:36,177 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 180 flow [2022-11-25 18:28:36,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 18:28:36,178 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:28:36,178 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:28:36,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:28:36,179 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:28:36,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:36,179 INFO L85 PathProgramCache]: Analyzing trace with hash -726936779, now seen corresponding path program 1 times [2022-11-25 18:28:36,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:36,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636731577] [2022-11-25 18:28:36,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:36,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:36,807 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 18:28:36,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:36,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636731577] [2022-11-25 18:28:36,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636731577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:28:36,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:28:36,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:28:36,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523287186] [2022-11-25 18:28:36,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:28:36,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:28:36,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:28:36,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:28:36,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:28:36,876 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 390 [2022-11-25 18:28:36,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:36,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:28:36,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 390 [2022-11-25 18:28:36,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:28:38,642 INFO L130 PetriNetUnfolder]: 8283/13227 cut-off events. [2022-11-25 18:28:38,642 INFO L131 PetriNetUnfolder]: For 3241/3432 co-relation queries the response was YES. [2022-11-25 18:28:38,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36037 conditions, 13227 events. 8283/13227 cut-off events. For 3241/3432 co-relation queries the response was YES. Maximal size of possible extension queue 875. Compared 94302 event pairs, 3929 based on Foata normal form. 46/10262 useless extension candidates. Maximal degree in co-relation 36030. Up to 6412 conditions per place. [2022-11-25 18:28:38,719 INFO L137 encePairwiseOnDemand]: 385/390 looper letters, 67 selfloop transitions, 5 changer transitions 0/80 dead transitions. [2022-11-25 18:28:38,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 80 transitions, 436 flow [2022-11-25 18:28:38,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:28:38,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:28:38,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 570 transitions. [2022-11-25 18:28:38,722 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.36538461538461536 [2022-11-25 18:28:38,722 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 570 transitions. [2022-11-25 18:28:38,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 570 transitions. [2022-11-25 18:28:38,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:28:38,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 570 transitions. [2022-11-25 18:28:38,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:38,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:38,727 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:38,728 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 180 flow. Second operand 4 states and 570 transitions. [2022-11-25 18:28:38,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 80 transitions, 436 flow [2022-11-25 18:28:38,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 80 transitions, 432 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:28:38,731 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 200 flow [2022-11-25 18:28:38,731 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=51, 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=4, PETRI_FLOW=200, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2022-11-25 18:28:38,732 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, -42 predicate places. [2022-11-25 18:28:38,732 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 200 flow [2022-11-25 18:28:38,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:38,733 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:28:38,733 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:28:38,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:28:38,733 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:28:38,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:38,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1090447165, now seen corresponding path program 2 times [2022-11-25 18:28:38,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:38,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843000377] [2022-11-25 18:28:38,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:38,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:39,095 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 18:28:39,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:39,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843000377] [2022-11-25 18:28:39,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843000377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:28:39,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:28:39,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:28:39,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784651342] [2022-11-25 18:28:39,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:28:39,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:28:39,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:28:39,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:28:39,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:28:39,161 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 390 [2022-11-25 18:28:39,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 130.4) internal successors, (652), 5 states have internal predecessors, (652), 0 states have call successors, (0), 0 states 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 18:28:39,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:28:39,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 390 [2022-11-25 18:28:39,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:28:40,864 INFO L130 PetriNetUnfolder]: 8178/13067 cut-off events. [2022-11-25 18:28:40,864 INFO L131 PetriNetUnfolder]: For 4783/4960 co-relation queries the response was YES. [2022-11-25 18:28:40,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36268 conditions, 13067 events. 8178/13067 cut-off events. For 4783/4960 co-relation queries the response was YES. Maximal size of possible extension queue 866. Compared 92905 event pairs, 4155 based on Foata normal form. 59/10134 useless extension candidates. Maximal degree in co-relation 36260. Up to 8718 conditions per place. [2022-11-25 18:28:40,937 INFO L137 encePairwiseOnDemand]: 387/390 looper letters, 67 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2022-11-25 18:28:40,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 78 transitions, 440 flow [2022-11-25 18:28:40,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:28:40,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:28:40,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 568 transitions. [2022-11-25 18:28:40,940 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3641025641025641 [2022-11-25 18:28:40,940 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 568 transitions. [2022-11-25 18:28:40,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 568 transitions. [2022-11-25 18:28:40,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:28:40,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 568 transitions. [2022-11-25 18:28:40,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states 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 18:28:40,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:40,945 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:40,946 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 200 flow. Second operand 4 states and 568 transitions. [2022-11-25 18:28:40,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 78 transitions, 440 flow [2022-11-25 18:28:40,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 78 transitions, 431 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 18:28:40,949 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 191 flow [2022-11-25 18:28:40,949 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=191, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2022-11-25 18:28:40,950 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, -43 predicate places. [2022-11-25 18:28:40,950 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 191 flow [2022-11-25 18:28:40,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.4) internal successors, (652), 5 states have internal predecessors, (652), 0 states have call successors, (0), 0 states 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 18:28:40,950 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:28:40,951 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:28:40,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:28:40,951 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:28:40,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:40,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1465004407, now seen corresponding path program 1 times [2022-11-25 18:28:40,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:40,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435167905] [2022-11-25 18:28:40,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:40,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:42,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:28:42,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:42,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435167905] [2022-11-25 18:28:42,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435167905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:28:42,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:28:42,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:28:42,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730854626] [2022-11-25 18:28:42,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:28:42,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:28:42,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:28:42,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:28:42,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:28:42,669 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 390 [2022-11-25 18:28:42,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 191 flow. Second operand has 7 states, 7 states have (on average 116.71428571428571) internal successors, (817), 7 states have internal predecessors, (817), 0 states have call successors, (0), 0 states 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 18:28:42,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:28:42,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 390 [2022-11-25 18:28:42,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:28:44,864 INFO L130 PetriNetUnfolder]: 8482/13428 cut-off events. [2022-11-25 18:28:44,865 INFO L131 PetriNetUnfolder]: For 4185/4185 co-relation queries the response was YES. [2022-11-25 18:28:44,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38263 conditions, 13428 events. 8482/13428 cut-off events. For 4185/4185 co-relation queries the response was YES. Maximal size of possible extension queue 849. Compared 91940 event pairs, 4956 based on Foata normal form. 1/11127 useless extension candidates. Maximal degree in co-relation 38256. Up to 12718 conditions per place. [2022-11-25 18:28:44,942 INFO L137 encePairwiseOnDemand]: 382/390 looper letters, 51 selfloop transitions, 10 changer transitions 0/65 dead transitions. [2022-11-25 18:28:44,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 65 transitions, 386 flow [2022-11-25 18:28:44,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:28:44,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:28:44,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 626 transitions. [2022-11-25 18:28:44,945 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.321025641025641 [2022-11-25 18:28:44,946 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 626 transitions. [2022-11-25 18:28:44,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 626 transitions. [2022-11-25 18:28:44,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:28:44,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 626 transitions. [2022-11-25 18:28:44,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 0 states have call successors, (0), 0 states 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 18:28:44,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:44,952 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:44,953 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 191 flow. Second operand 5 states and 626 transitions. [2022-11-25 18:28:44,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 65 transitions, 386 flow [2022-11-25 18:28:44,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 65 transitions, 379 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:28:44,956 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 272 flow [2022-11-25 18:28:44,956 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2022-11-25 18:28:44,957 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, -39 predicate places. [2022-11-25 18:28:44,957 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 272 flow [2022-11-25 18:28:44,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.71428571428571) internal successors, (817), 7 states have internal predecessors, (817), 0 states have call successors, (0), 0 states 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 18:28:44,958 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:28:44,958 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:28:44,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:28:44,958 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:28:44,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:44,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1103810947, now seen corresponding path program 1 times [2022-11-25 18:28:44,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:44,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291413700] [2022-11-25 18:28:44,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:44,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:45,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:28:45,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:45,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291413700] [2022-11-25 18:28:45,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291413700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:28:45,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:28:45,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:28:45,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048072217] [2022-11-25 18:28:45,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:28:45,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:28:45,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:28:45,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:28:45,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:28:45,074 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 390 [2022-11-25 18:28:45,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states 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 18:28:45,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:28:45,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 390 [2022-11-25 18:28:45,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:28:47,627 INFO L130 PetriNetUnfolder]: 12510/19435 cut-off events. [2022-11-25 18:28:47,627 INFO L131 PetriNetUnfolder]: For 9057/9650 co-relation queries the response was YES. [2022-11-25 18:28:47,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55377 conditions, 19435 events. 12510/19435 cut-off events. For 9057/9650 co-relation queries the response was YES. Maximal size of possible extension queue 1311. Compared 144104 event pairs, 4028 based on Foata normal form. 178/15171 useless extension candidates. Maximal degree in co-relation 55368. Up to 10632 conditions per place. [2022-11-25 18:28:47,722 INFO L137 encePairwiseOnDemand]: 387/390 looper letters, 76 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2022-11-25 18:28:47,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 87 transitions, 544 flow [2022-11-25 18:28:47,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:28:47,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:28:47,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2022-11-25 18:28:47,725 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.382051282051282 [2022-11-25 18:28:47,725 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 447 transitions. [2022-11-25 18:28:47,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 447 transitions. [2022-11-25 18:28:47,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:28:47,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 447 transitions. [2022-11-25 18:28:47,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states 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 18:28:47,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states 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 18:28:47,730 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states 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 18:28:47,730 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 272 flow. Second operand 3 states and 447 transitions. [2022-11-25 18:28:47,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 87 transitions, 544 flow [2022-11-25 18:28:47,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 87 transitions, 528 flow, removed 8 selfloop flow, removed 0 redundant places. [2022-11-25 18:28:47,766 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 267 flow [2022-11-25 18:28:47,766 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=267, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2022-11-25 18:28:47,767 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, -36 predicate places. [2022-11-25 18:28:47,767 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 267 flow [2022-11-25 18:28:47,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states 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 18:28:47,767 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:28:47,768 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:28:47,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 18:28:47,768 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:28:47,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:47,768 INFO L85 PathProgramCache]: Analyzing trace with hash 2087658812, now seen corresponding path program 1 times [2022-11-25 18:28:47,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:47,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33641093] [2022-11-25 18:28:47,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:47,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:49,879 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 18:28:49,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:49,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33641093] [2022-11-25 18:28:49,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33641093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:28:49,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:28:49,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:28:49,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858030003] [2022-11-25 18:28:49,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:28:49,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:28:49,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:28:49,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:28:49,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:28:50,225 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 390 [2022-11-25 18:28:50,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 267 flow. Second operand has 8 states, 8 states have (on average 120.625) internal successors, (965), 8 states have internal predecessors, (965), 0 states have call successors, (0), 0 states 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 18:28:50,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:28:50,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 390 [2022-11-25 18:28:50,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:28:52,639 INFO L130 PetriNetUnfolder]: 10953/17151 cut-off events. [2022-11-25 18:28:52,639 INFO L131 PetriNetUnfolder]: For 6891/6941 co-relation queries the response was YES. [2022-11-25 18:28:52,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50158 conditions, 17151 events. 10953/17151 cut-off events. For 6891/6941 co-relation queries the response was YES. Maximal size of possible extension queue 1236. Compared 125085 event pairs, 3586 based on Foata normal form. 23/14323 useless extension candidates. Maximal degree in co-relation 50147. Up to 14529 conditions per place. [2022-11-25 18:28:52,748 INFO L137 encePairwiseOnDemand]: 378/390 looper letters, 84 selfloop transitions, 32 changer transitions 0/120 dead transitions. [2022-11-25 18:28:52,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 120 transitions, 799 flow [2022-11-25 18:28:52,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:28:52,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 18:28:52,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1159 transitions. [2022-11-25 18:28:52,751 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3301994301994302 [2022-11-25 18:28:52,751 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1159 transitions. [2022-11-25 18:28:52,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1159 transitions. [2022-11-25 18:28:52,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:28:52,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1159 transitions. [2022-11-25 18:28:52,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.77777777777777) internal successors, (1159), 9 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states 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 18:28:52,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 390.0) internal successors, (3900), 10 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states 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 18:28:52,761 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 390.0) internal successors, (3900), 10 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states 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 18:28:52,761 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 267 flow. Second operand 9 states and 1159 transitions. [2022-11-25 18:28:52,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 120 transitions, 799 flow [2022-11-25 18:28:52,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 120 transitions, 776 flow, removed 7 selfloop flow, removed 1 redundant places. [2022-11-25 18:28:52,843 INFO L231 Difference]: Finished difference. Result has 73 places, 81 transitions, 517 flow [2022-11-25 18:28:52,843 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=517, PETRI_PLACES=73, PETRI_TRANSITIONS=81} [2022-11-25 18:28:52,844 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, -24 predicate places. [2022-11-25 18:28:52,844 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 81 transitions, 517 flow [2022-11-25 18:28:52,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 120.625) internal successors, (965), 8 states have internal predecessors, (965), 0 states have call successors, (0), 0 states 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 18:28:52,845 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:28:52,845 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:28:52,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 18:28:52,845 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:28:52,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:52,846 INFO L85 PathProgramCache]: Analyzing trace with hash -625816922, now seen corresponding path program 1 times [2022-11-25 18:28:52,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:52,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741577304] [2022-11-25 18:28:52,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:52,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:53,563 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 18:28:53,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:53,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741577304] [2022-11-25 18:28:53,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741577304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:28:53,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:28:53,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:28:53,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611312868] [2022-11-25 18:28:53,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:28:53,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:28:53,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:28:53,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:28:53,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:28:53,798 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 390 [2022-11-25 18:28:53,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 81 transitions, 517 flow. Second operand has 7 states, 7 states have (on average 116.85714285714286) internal successors, (818), 7 states have internal predecessors, (818), 0 states have call successors, (0), 0 states 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 18:28:53,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:28:53,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 390 [2022-11-25 18:28:53,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:28:56,269 INFO L130 PetriNetUnfolder]: 10913/17124 cut-off events. [2022-11-25 18:28:56,270 INFO L131 PetriNetUnfolder]: For 12627/12669 co-relation queries the response was YES. [2022-11-25 18:28:56,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56623 conditions, 17124 events. 10913/17124 cut-off events. For 12627/12669 co-relation queries the response was YES. Maximal size of possible extension queue 1216. Compared 124261 event pairs, 6261 based on Foata normal form. 10/14607 useless extension candidates. Maximal degree in co-relation 56607. Up to 16127 conditions per place. [2022-11-25 18:28:56,389 INFO L137 encePairwiseOnDemand]: 380/390 looper letters, 83 selfloop transitions, 18 changer transitions 0/105 dead transitions. [2022-11-25 18:28:56,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 105 transitions, 827 flow [2022-11-25 18:28:56,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:28:56,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:28:56,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 636 transitions. [2022-11-25 18:28:56,393 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3261538461538461 [2022-11-25 18:28:56,393 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 636 transitions. [2022-11-25 18:28:56,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 636 transitions. [2022-11-25 18:28:56,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:28:56,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 636 transitions. [2022-11-25 18:28:56,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 127.2) internal successors, (636), 5 states have internal predecessors, (636), 0 states have call successors, (0), 0 states 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 18:28:56,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:56,400 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:56,400 INFO L175 Difference]: Start difference. First operand has 73 places, 81 transitions, 517 flow. Second operand 5 states and 636 transitions. [2022-11-25 18:28:56,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 105 transitions, 827 flow [2022-11-25 18:28:57,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 105 transitions, 816 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-25 18:28:57,554 INFO L231 Difference]: Finished difference. Result has 78 places, 90 transitions, 639 flow [2022-11-25 18:28:57,554 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=639, PETRI_PLACES=78, PETRI_TRANSITIONS=90} [2022-11-25 18:28:57,555 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, -19 predicate places. [2022-11-25 18:28:57,555 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 90 transitions, 639 flow [2022-11-25 18:28:57,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.85714285714286) internal successors, (818), 7 states have internal predecessors, (818), 0 states have call successors, (0), 0 states 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 18:28:57,556 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:28:57,556 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:28:57,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 18:28:57,556 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting P2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:28:57,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:57,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1060166553, now seen corresponding path program 1 times [2022-11-25 18:28:57,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:57,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389600119] [2022-11-25 18:28:57,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:57,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:57,742 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 18:28:57,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:57,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389600119] [2022-11-25 18:28:57,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389600119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:28:57,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:28:57,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:28:57,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564699561] [2022-11-25 18:28:57,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:28:57,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:28:57,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:28:57,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:28:57,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:28:57,837 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 390 [2022-11-25 18:28:57,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 90 transitions, 639 flow. Second operand has 5 states, 5 states have (on average 123.6) internal successors, (618), 5 states have internal predecessors, (618), 0 states have call successors, (0), 0 states 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 18:28:57,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:28:57,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 390 [2022-11-25 18:28:57,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:29:00,040 INFO L130 PetriNetUnfolder]: 9541/14921 cut-off events. [2022-11-25 18:29:00,040 INFO L131 PetriNetUnfolder]: For 15539/15581 co-relation queries the response was YES. [2022-11-25 18:29:00,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52087 conditions, 14921 events. 9541/14921 cut-off events. For 15539/15581 co-relation queries the response was YES. Maximal size of possible extension queue 1053. Compared 105316 event pairs, 3705 based on Foata normal form. 158/12881 useless extension candidates. Maximal degree in co-relation 52068. Up to 6505 conditions per place. [2022-11-25 18:29:00,152 INFO L137 encePairwiseOnDemand]: 372/390 looper letters, 92 selfloop transitions, 24 changer transitions 0/118 dead transitions. [2022-11-25 18:29:00,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 118 transitions, 1033 flow [2022-11-25 18:29:00,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:29:00,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:29:00,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 548 transitions. [2022-11-25 18:29:00,155 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.35128205128205126 [2022-11-25 18:29:00,155 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 548 transitions. [2022-11-25 18:29:00,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 548 transitions. [2022-11-25 18:29:00,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:29:00,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 548 transitions. [2022-11-25 18:29:00,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states 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 18:29:00,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:29:00,160 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:29:00,161 INFO L175 Difference]: Start difference. First operand has 78 places, 90 transitions, 639 flow. Second operand 4 states and 548 transitions. [2022-11-25 18:29:00,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 118 transitions, 1033 flow [2022-11-25 18:29:00,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 118 transitions, 1016 flow, removed 7 selfloop flow, removed 1 redundant places. [2022-11-25 18:29:00,857 INFO L231 Difference]: Finished difference. Result has 82 places, 100 transitions, 808 flow [2022-11-25 18:29:00,857 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=808, PETRI_PLACES=82, PETRI_TRANSITIONS=100} [2022-11-25 18:29:00,857 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, -15 predicate places. [2022-11-25 18:29:00,857 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 100 transitions, 808 flow [2022-11-25 18:29:00,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.6) internal successors, (618), 5 states have internal predecessors, (618), 0 states have call successors, (0), 0 states 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 18:29:00,858 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:29:00,858 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:29:00,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 18:29:00,858 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:29:00,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:29:00,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1213524425, now seen corresponding path program 1 times [2022-11-25 18:29:00,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:29:00,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359140823] [2022-11-25 18:29:00,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:00,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:29:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:29:01,796 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 18:29:01,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:29:01,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359140823] [2022-11-25 18:29:01,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359140823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:29:01,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:29:01,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:29:01,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204563328] [2022-11-25 18:29:01,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:29:01,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:29:01,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:29:01,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:29:01,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:29:01,852 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 390 [2022-11-25 18:29:01,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 100 transitions, 808 flow. Second operand has 5 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 0 states have call successors, (0), 0 states 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 18:29:01,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:29:01,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 390 [2022-11-25 18:29:01,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:29:04,860 INFO L130 PetriNetUnfolder]: 12034/18694 cut-off events. [2022-11-25 18:29:04,860 INFO L131 PetriNetUnfolder]: For 26220/26272 co-relation queries the response was YES. [2022-11-25 18:29:04,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74217 conditions, 18694 events. 12034/18694 cut-off events. For 26220/26272 co-relation queries the response was YES. Maximal size of possible extension queue 1320. Compared 135131 event pairs, 6336 based on Foata normal form. 40/16354 useless extension candidates. Maximal degree in co-relation 74196. Up to 14380 conditions per place. [2022-11-25 18:29:05,002 INFO L137 encePairwiseOnDemand]: 381/390 looper letters, 100 selfloop transitions, 36 changer transitions 0/140 dead transitions. [2022-11-25 18:29:05,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 140 transitions, 1368 flow [2022-11-25 18:29:05,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:29:05,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:29:05,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 560 transitions. [2022-11-25 18:29:05,008 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.358974358974359 [2022-11-25 18:29:05,008 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 560 transitions. [2022-11-25 18:29:05,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 560 transitions. [2022-11-25 18:29:05,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:29:05,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 560 transitions. [2022-11-25 18:29:05,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states 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 18:29:05,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:29:05,014 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:29:05,014 INFO L175 Difference]: Start difference. First operand has 82 places, 100 transitions, 808 flow. Second operand 4 states and 560 transitions. [2022-11-25 18:29:05,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 140 transitions, 1368 flow [2022-11-25 18:29:06,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 140 transitions, 1354 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-25 18:29:06,511 INFO L231 Difference]: Finished difference. Result has 85 places, 118 transitions, 1096 flow [2022-11-25 18:29:06,512 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1096, PETRI_PLACES=85, PETRI_TRANSITIONS=118} [2022-11-25 18:29:06,512 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, -12 predicate places. [2022-11-25 18:29:06,512 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 118 transitions, 1096 flow [2022-11-25 18:29:06,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 0 states have call successors, (0), 0 states 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 18:29:06,512 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:29:06,513 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:29:06,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 18:29:06,513 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:29:06,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:29:06,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1426826811, now seen corresponding path program 2 times [2022-11-25 18:29:06,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:29:06,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505196948] [2022-11-25 18:29:06,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:06,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:29:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:29:08,274 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 18:29:08,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:29:08,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505196948] [2022-11-25 18:29:08,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505196948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:29:08,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:29:08,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:29:08,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464071474] [2022-11-25 18:29:08,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:29:08,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:29:08,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:29:08,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:29:08,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:29:08,637 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 390 [2022-11-25 18:29:08,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 118 transitions, 1096 flow. Second operand has 8 states, 8 states have (on average 119.75) internal successors, (958), 8 states have internal predecessors, (958), 0 states have call successors, (0), 0 states 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 18:29:08,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:29:08,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 390 [2022-11-25 18:29:08,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:29:12,039 INFO L130 PetriNetUnfolder]: 12269/19063 cut-off events. [2022-11-25 18:29:12,039 INFO L131 PetriNetUnfolder]: For 39516/39561 co-relation queries the response was YES. [2022-11-25 18:29:12,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82650 conditions, 19063 events. 12269/19063 cut-off events. For 39516/39561 co-relation queries the response was YES. Maximal size of possible extension queue 1320. Compared 137223 event pairs, 5938 based on Foata normal form. 15/16700 useless extension candidates. Maximal degree in co-relation 82627. Up to 17891 conditions per place. [2022-11-25 18:29:12,186 INFO L137 encePairwiseOnDemand]: 381/390 looper letters, 130 selfloop transitions, 21 changer transitions 0/155 dead transitions. [2022-11-25 18:29:12,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 155 transitions, 1594 flow [2022-11-25 18:29:12,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 18:29:12,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 18:29:12,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1009 transitions. [2022-11-25 18:29:12,193 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3233974358974359 [2022-11-25 18:29:12,193 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1009 transitions. [2022-11-25 18:29:12,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1009 transitions. [2022-11-25 18:29:12,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:29:12,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1009 transitions. [2022-11-25 18:29:12,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 126.125) internal successors, (1009), 8 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states 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 18:29:12,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 390.0) internal successors, (3510), 9 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states 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 18:29:12,202 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 390.0) internal successors, (3510), 9 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states 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 18:29:12,202 INFO L175 Difference]: Start difference. First operand has 85 places, 118 transitions, 1096 flow. Second operand 8 states and 1009 transitions. [2022-11-25 18:29:12,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 155 transitions, 1594 flow [2022-11-25 18:29:13,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 155 transitions, 1537 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-11-25 18:29:13,417 INFO L231 Difference]: Finished difference. Result has 94 places, 135 transitions, 1265 flow [2022-11-25 18:29:13,417 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1265, PETRI_PLACES=94, PETRI_TRANSITIONS=135} [2022-11-25 18:29:13,417 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, -3 predicate places. [2022-11-25 18:29:13,418 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 135 transitions, 1265 flow [2022-11-25 18:29:13,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 119.75) internal successors, (958), 8 states have internal predecessors, (958), 0 states have call successors, (0), 0 states 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 18:29:13,418 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:29:13,419 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:29:13,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 18:29:13,419 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:29:13,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:29:13,419 INFO L85 PathProgramCache]: Analyzing trace with hash 187889041, now seen corresponding path program 3 times [2022-11-25 18:29:13,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:29:13,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164668461] [2022-11-25 18:29:13,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:13,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:29:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:29:14,560 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 18:29:14,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:29:14,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164668461] [2022-11-25 18:29:14,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164668461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:29:14,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:29:14,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:29:14,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267126190] [2022-11-25 18:29:14,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:29:14,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:29:14,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:29:14,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:29:14,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:29:14,969 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 390 [2022-11-25 18:29:14,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 135 transitions, 1265 flow. Second operand has 9 states, 9 states have (on average 117.55555555555556) internal successors, (1058), 9 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states 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 18:29:14,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:29:14,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 390 [2022-11-25 18:29:14,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:29:19,095 INFO L130 PetriNetUnfolder]: 12586/19579 cut-off events. [2022-11-25 18:29:19,095 INFO L131 PetriNetUnfolder]: For 40399/40448 co-relation queries the response was YES. [2022-11-25 18:29:19,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85167 conditions, 19579 events. 12586/19579 cut-off events. For 40399/40448 co-relation queries the response was YES. Maximal size of possible extension queue 1410. Compared 144685 event pairs, 1265 based on Foata normal form. 24/17174 useless extension candidates. Maximal degree in co-relation 85140. Up to 7058 conditions per place. [2022-11-25 18:29:19,286 INFO L137 encePairwiseOnDemand]: 377/390 looper letters, 165 selfloop transitions, 140 changer transitions 0/309 dead transitions. [2022-11-25 18:29:19,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 309 transitions, 3280 flow [2022-11-25 18:29:19,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 18:29:19,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-25 18:29:19,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1664 transitions. [2022-11-25 18:29:19,291 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3282051282051282 [2022-11-25 18:29:19,291 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1664 transitions. [2022-11-25 18:29:19,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1664 transitions. [2022-11-25 18:29:19,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:29:19,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1664 transitions. [2022-11-25 18:29:19,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 128.0) internal successors, (1664), 13 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states 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 18:29:19,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 390.0) internal successors, (5460), 14 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states 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 18:29:19,305 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 390.0) internal successors, (5460), 14 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states 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 18:29:19,306 INFO L175 Difference]: Start difference. First operand has 94 places, 135 transitions, 1265 flow. Second operand 13 states and 1664 transitions. [2022-11-25 18:29:19,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 309 transitions, 3280 flow [2022-11-25 18:29:20,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 309 transitions, 3237 flow, removed 19 selfloop flow, removed 1 redundant places. [2022-11-25 18:29:20,582 INFO L231 Difference]: Finished difference. Result has 114 places, 219 transitions, 2707 flow [2022-11-25 18:29:20,583 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2707, PETRI_PLACES=114, PETRI_TRANSITIONS=219} [2022-11-25 18:29:20,583 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 17 predicate places. [2022-11-25 18:29:20,583 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 219 transitions, 2707 flow [2022-11-25 18:29:20,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.55555555555556) internal successors, (1058), 9 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states 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 18:29:20,584 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:29:20,585 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:29:20,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 18:29:20,585 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:29:20,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:29:20,585 INFO L85 PathProgramCache]: Analyzing trace with hash 2074512568, now seen corresponding path program 1 times [2022-11-25 18:29:20,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:29:20,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277295963] [2022-11-25 18:29:20,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:20,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:29:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:29:21,740 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 18:29:21,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:29:21,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277295963] [2022-11-25 18:29:21,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277295963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:29:21,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:29:21,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:29:21,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003702030] [2022-11-25 18:29:21,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:29:21,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:29:21,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:29:21,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:29:21,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:29:22,022 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 390 [2022-11-25 18:29:22,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 219 transitions, 2707 flow. Second operand has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states 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 18:29:22,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:29:22,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 390 [2022-11-25 18:29:22,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:29:26,028 INFO L130 PetriNetUnfolder]: 13174/20408 cut-off events. [2022-11-25 18:29:26,028 INFO L131 PetriNetUnfolder]: For 70305/70341 co-relation queries the response was YES. [2022-11-25 18:29:26,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104255 conditions, 20408 events. 13174/20408 cut-off events. For 70305/70341 co-relation queries the response was YES. Maximal size of possible extension queue 1468. Compared 148284 event pairs, 6456 based on Foata normal form. 7/17832 useless extension candidates. Maximal degree in co-relation 104219. Up to 15990 conditions per place. [2022-11-25 18:29:26,229 INFO L137 encePairwiseOnDemand]: 378/390 looper letters, 288 selfloop transitions, 132 changer transitions 0/424 dead transitions. [2022-11-25 18:29:26,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 424 transitions, 5777 flow [2022-11-25 18:29:26,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:29:26,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:29:26,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 829 transitions. [2022-11-25 18:29:26,233 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3542735042735043 [2022-11-25 18:29:26,233 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 829 transitions. [2022-11-25 18:29:26,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 829 transitions. [2022-11-25 18:29:26,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:29:26,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 829 transitions. [2022-11-25 18:29:26,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 138.16666666666666) internal successors, (829), 6 states have internal predecessors, (829), 0 states have call successors, (0), 0 states 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 18:29:26,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states 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 18:29:26,239 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states 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 18:29:26,239 INFO L175 Difference]: Start difference. First operand has 114 places, 219 transitions, 2707 flow. Second operand 6 states and 829 transitions. [2022-11-25 18:29:26,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 424 transitions, 5777 flow [2022-11-25 18:29:28,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 424 transitions, 5567 flow, removed 105 selfloop flow, removed 0 redundant places. [2022-11-25 18:29:28,122 INFO L231 Difference]: Finished difference. Result has 123 places, 310 transitions, 4301 flow [2022-11-25 18:29:28,123 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=2583, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4301, PETRI_PLACES=123, PETRI_TRANSITIONS=310} [2022-11-25 18:29:28,123 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 26 predicate places. [2022-11-25 18:29:28,123 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 310 transitions, 4301 flow [2022-11-25 18:29:28,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states 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 18:29:28,125 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:29:28,125 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:29:28,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 18:29:28,125 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:29:28,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:29:28,126 INFO L85 PathProgramCache]: Analyzing trace with hash 884250136, now seen corresponding path program 2 times [2022-11-25 18:29:28,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:29:28,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000557240] [2022-11-25 18:29:28,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:28,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:29:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:29:29,700 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 18:29:29,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:29:29,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000557240] [2022-11-25 18:29:29,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000557240] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:29:29,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:29:29,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:29:29,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552937162] [2022-11-25 18:29:29,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:29:29,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:29:29,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:29:29,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:29:29,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:29:30,193 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 390 [2022-11-25 18:29:30,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 310 transitions, 4301 flow. Second operand has 9 states, 9 states have (on average 118.55555555555556) internal successors, (1067), 9 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states 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 18:29:30,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:29:30,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 390 [2022-11-25 18:29:30,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:29:36,423 INFO L130 PetriNetUnfolder]: 14355/22179 cut-off events. [2022-11-25 18:29:36,423 INFO L131 PetriNetUnfolder]: For 100718/100754 co-relation queries the response was YES. [2022-11-25 18:29:36,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124164 conditions, 22179 events. 14355/22179 cut-off events. For 100718/100754 co-relation queries the response was YES. Maximal size of possible extension queue 1597. Compared 162407 event pairs, 6522 based on Foata normal form. 32/19352 useless extension candidates. Maximal degree in co-relation 124123. Up to 16320 conditions per place. [2022-11-25 18:29:36,643 INFO L137 encePairwiseOnDemand]: 375/390 looper letters, 337 selfloop transitions, 182 changer transitions 0/523 dead transitions. [2022-11-25 18:29:36,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 523 transitions, 7680 flow [2022-11-25 18:29:36,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 18:29:36,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 18:29:36,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1081 transitions. [2022-11-25 18:29:36,647 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.34647435897435896 [2022-11-25 18:29:36,647 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1081 transitions. [2022-11-25 18:29:36,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1081 transitions. [2022-11-25 18:29:36,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:29:36,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1081 transitions. [2022-11-25 18:29:36,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 135.125) internal successors, (1081), 8 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states 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 18:29:36,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 390.0) internal successors, (3510), 9 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states 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 18:29:36,655 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 390.0) internal successors, (3510), 9 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states 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 18:29:36,655 INFO L175 Difference]: Start difference. First operand has 123 places, 310 transitions, 4301 flow. Second operand 8 states and 1081 transitions. [2022-11-25 18:29:36,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 523 transitions, 7680 flow [2022-11-25 18:29:39,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 523 transitions, 7604 flow, removed 38 selfloop flow, removed 0 redundant places. [2022-11-25 18:29:39,135 INFO L231 Difference]: Finished difference. Result has 135 places, 377 transitions, 5931 flow [2022-11-25 18:29:39,136 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=4241, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5931, PETRI_PLACES=135, PETRI_TRANSITIONS=377} [2022-11-25 18:29:39,137 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 38 predicate places. [2022-11-25 18:29:39,137 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 377 transitions, 5931 flow [2022-11-25 18:29:39,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 118.55555555555556) internal successors, (1067), 9 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states 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 18:29:39,138 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:29:39,138 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:29:39,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 18:29:39,138 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting P2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:29:39,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:29:39,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1494577156, now seen corresponding path program 1 times [2022-11-25 18:29:39,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:29:39,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348839783] [2022-11-25 18:29:39,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:39,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:29:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:29:39,396 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 18:29:39,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:29:39,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348839783] [2022-11-25 18:29:39,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348839783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:29:39,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:29:39,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:29:39,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213306364] [2022-11-25 18:29:39,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:29:39,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:29:39,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:29:39,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:29:39,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:29:39,553 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 390 [2022-11-25 18:29:39,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 377 transitions, 5931 flow. Second operand has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 0 states have call successors, (0), 0 states 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 18:29:39,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:29:39,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 390 [2022-11-25 18:29:39,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:29:44,525 INFO L130 PetriNetUnfolder]: 10620/17169 cut-off events. [2022-11-25 18:29:44,526 INFO L131 PetriNetUnfolder]: For 93686/93722 co-relation queries the response was YES. [2022-11-25 18:29:44,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97321 conditions, 17169 events. 10620/17169 cut-off events. For 93686/93722 co-relation queries the response was YES. Maximal size of possible extension queue 1267. Compared 129683 event pairs, 3177 based on Foata normal form. 373/16269 useless extension candidates. Maximal degree in co-relation 97274. Up to 6087 conditions per place. [2022-11-25 18:29:44,708 INFO L137 encePairwiseOnDemand]: 371/390 looper letters, 291 selfloop transitions, 137 changer transitions 0/430 dead transitions. [2022-11-25 18:29:44,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 430 transitions, 7425 flow [2022-11-25 18:29:44,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:29:44,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:29:44,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 788 transitions. [2022-11-25 18:29:44,712 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3367521367521368 [2022-11-25 18:29:44,712 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 788 transitions. [2022-11-25 18:29:44,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 788 transitions. [2022-11-25 18:29:44,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:29:44,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 788 transitions. [2022-11-25 18:29:44,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 131.33333333333334) internal successors, (788), 6 states have internal predecessors, (788), 0 states have call successors, (0), 0 states 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 18:29:44,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states 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 18:29:44,716 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states 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 18:29:44,716 INFO L175 Difference]: Start difference. First operand has 135 places, 377 transitions, 5931 flow. Second operand 6 states and 788 transitions. [2022-11-25 18:29:44,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 430 transitions, 7425 flow [2022-11-25 18:29:45,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 430 transitions, 7334 flow, removed 8 selfloop flow, removed 2 redundant places. [2022-11-25 18:29:45,905 INFO L231 Difference]: Finished difference. Result has 140 places, 379 transitions, 6372 flow [2022-11-25 18:29:45,906 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=5847, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6372, PETRI_PLACES=140, PETRI_TRANSITIONS=379} [2022-11-25 18:29:45,906 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 43 predicate places. [2022-11-25 18:29:45,906 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 379 transitions, 6372 flow [2022-11-25 18:29:45,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 0 states have call successors, (0), 0 states 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 18:29:45,906 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:29:45,907 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:29:45,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 18:29:45,907 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:29:45,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:29:45,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1494577238, now seen corresponding path program 1 times [2022-11-25 18:29:45,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:29:45,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605201950] [2022-11-25 18:29:45,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:45,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:29:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:29:46,468 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 18:29:46,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:29:46,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605201950] [2022-11-25 18:29:46,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605201950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:29:46,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:29:46,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:29:46,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351536679] [2022-11-25 18:29:46,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:29:46,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:29:46,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:29:46,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:29:46,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:29:47,012 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 390 [2022-11-25 18:29:47,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 379 transitions, 6372 flow. Second operand has 9 states, 9 states have (on average 119.55555555555556) internal successors, (1076), 9 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states 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 18:29:47,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:29:47,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 390 [2022-11-25 18:29:47,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:29:50,915 INFO L130 PetriNetUnfolder]: 6848/11303 cut-off events. [2022-11-25 18:29:50,915 INFO L131 PetriNetUnfolder]: For 87006/87577 co-relation queries the response was YES. [2022-11-25 18:29:51,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69697 conditions, 11303 events. 6848/11303 cut-off events. For 87006/87577 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 81821 event pairs, 783 based on Foata normal form. 217/11064 useless extension candidates. Maximal degree in co-relation 69650. Up to 4355 conditions per place. [2022-11-25 18:29:51,040 INFO L137 encePairwiseOnDemand]: 382/390 looper letters, 252 selfloop transitions, 86 changer transitions 1/421 dead transitions. [2022-11-25 18:29:51,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 421 transitions, 7187 flow [2022-11-25 18:29:51,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:29:51,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 18:29:51,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1138 transitions. [2022-11-25 18:29:51,045 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3242165242165242 [2022-11-25 18:29:51,045 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1138 transitions. [2022-11-25 18:29:51,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1138 transitions. [2022-11-25 18:29:51,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:29:51,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1138 transitions. [2022-11-25 18:29:51,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.44444444444444) internal successors, (1138), 9 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states 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 18:29:51,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 390.0) internal successors, (3900), 10 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states 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 18:29:51,051 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 390.0) internal successors, (3900), 10 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states 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 18:29:51,051 INFO L175 Difference]: Start difference. First operand has 140 places, 379 transitions, 6372 flow. Second operand 9 states and 1138 transitions. [2022-11-25 18:29:51,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 421 transitions, 7187 flow [2022-11-25 18:29:52,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 421 transitions, 7120 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-25 18:29:52,068 INFO L231 Difference]: Finished difference. Result has 145 places, 352 transitions, 5941 flow [2022-11-25 18:29:52,068 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=5635, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5941, PETRI_PLACES=145, PETRI_TRANSITIONS=352} [2022-11-25 18:29:52,069 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 48 predicate places. [2022-11-25 18:29:52,069 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 352 transitions, 5941 flow [2022-11-25 18:29:52,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 119.55555555555556) internal successors, (1076), 9 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states 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 18:29:52,069 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:29:52,069 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:29:52,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 18:29:52,070 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:29:52,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:29:52,070 INFO L85 PathProgramCache]: Analyzing trace with hash -831985925, now seen corresponding path program 1 times [2022-11-25 18:29:52,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:29:52,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617546116] [2022-11-25 18:29:52,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:52,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:29:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:29:54,090 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 18:29:54,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:29:54,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617546116] [2022-11-25 18:29:54,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617546116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:29:54,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:29:54,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:29:54,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107425074] [2022-11-25 18:29:54,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:29:54,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:29:54,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:29:54,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:29:54,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:29:54,193 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 390 [2022-11-25 18:29:54,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 352 transitions, 5941 flow. Second operand has 7 states, 7 states have (on average 126.14285714285714) internal successors, (883), 7 states have internal predecessors, (883), 0 states have call successors, (0), 0 states 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 18:29:54,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:29:54,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 390 [2022-11-25 18:29:54,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:29:58,008 INFO L130 PetriNetUnfolder]: 7882/12599 cut-off events. [2022-11-25 18:29:58,008 INFO L131 PetriNetUnfolder]: For 91734/91772 co-relation queries the response was YES. [2022-11-25 18:29:58,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78144 conditions, 12599 events. 7882/12599 cut-off events. For 91734/91772 co-relation queries the response was YES. Maximal size of possible extension queue 789. Compared 88377 event pairs, 3215 based on Foata normal form. 12/12218 useless extension candidates. Maximal degree in co-relation 78095. Up to 8225 conditions per place. [2022-11-25 18:29:58,137 INFO L137 encePairwiseOnDemand]: 382/390 looper letters, 331 selfloop transitions, 118 changer transitions 3/456 dead transitions. [2022-11-25 18:29:58,137 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 456 transitions, 8092 flow [2022-11-25 18:29:58,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:29:58,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:29:58,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 697 transitions. [2022-11-25 18:29:58,139 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.35743589743589743 [2022-11-25 18:29:58,139 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 697 transitions. [2022-11-25 18:29:58,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 697 transitions. [2022-11-25 18:29:58,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:29:58,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 697 transitions. [2022-11-25 18:29:58,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.4) internal successors, (697), 5 states have internal predecessors, (697), 0 states have call successors, (0), 0 states 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 18:29:58,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:29:58,144 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:29:58,144 INFO L175 Difference]: Start difference. First operand has 145 places, 352 transitions, 5941 flow. Second operand 5 states and 697 transitions. [2022-11-25 18:29:58,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 456 transitions, 8092 flow [2022-11-25 18:29:59,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 456 transitions, 7932 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-11-25 18:29:59,056 INFO L231 Difference]: Finished difference. Result has 145 places, 370 transitions, 6437 flow [2022-11-25 18:29:59,057 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=5824, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6437, PETRI_PLACES=145, PETRI_TRANSITIONS=370} [2022-11-25 18:29:59,057 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 48 predicate places. [2022-11-25 18:29:59,057 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 370 transitions, 6437 flow [2022-11-25 18:29:59,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.14285714285714) internal successors, (883), 7 states have internal predecessors, (883), 0 states have call successors, (0), 0 states 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 18:29:59,058 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:29:59,058 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:29:59,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-25 18:29:59,058 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2022-11-25 18:29:59,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:29:59,058 INFO L85 PathProgramCache]: Analyzing trace with hash 499518170, now seen corresponding path program 1 times [2022-11-25 18:29:59,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:29:59,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447319887] [2022-11-25 18:29:59,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:59,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:29:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:30:00,574 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 18:30:00,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:30:00,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447319887] [2022-11-25 18:30:00,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447319887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:30:00,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:30:00,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:30:00,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838620695] [2022-11-25 18:30:00,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:30:00,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:30:00,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:30:00,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:30:00,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:30:00,845 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 390 [2022-11-25 18:30:00,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 370 transitions, 6437 flow. Second operand has 8 states, 8 states have (on average 115.875) internal successors, (927), 8 states have internal predecessors, (927), 0 states have call successors, (0), 0 states 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 18:30:00,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:30:00,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 390 [2022-11-25 18:30:00,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand