./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe024_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dfa8482-f9b2-4549-8327-ac880105bb93/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dfa8482-f9b2-4549-8327-ac880105bb93/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_3dfa8482-f9b2-4549-8327-ac880105bb93/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dfa8482-f9b2-4549-8327-ac880105bb93/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe024_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dfa8482-f9b2-4549-8327-ac880105bb93/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_3dfa8482-f9b2-4549-8327-ac880105bb93/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 f830c559346dfed293d38cb3f451f57bf45496349320c2696ae4150a4c0c44e9 --- 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 17:32:34,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:32:34,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:32:34,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:32:34,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:32:34,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:32:34,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:32:34,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:32:34,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:32:34,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:32:34,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:32:34,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:32:34,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:32:34,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:32:34,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:32:34,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:32:34,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:32:34,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:32:34,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:32:34,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:32:34,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:32:34,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:32:34,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:32:34,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:32:34,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:32:34,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:32:34,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:32:34,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:32:34,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:32:34,712 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:32:34,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:32:34,713 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:32:34,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:32:34,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:32:34,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:32:34,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:32:34,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:32:34,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:32:34,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:32:34,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:32:34,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:32:34,731 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dfa8482-f9b2-4549-8327-ac880105bb93/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 17:32:34,761 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:32:34,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:32:34,762 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:32:34,762 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:32:34,762 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:32:34,763 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:32:34,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:32:34,764 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:32:34,764 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:32:34,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:32:34,764 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:32:34,764 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:32:34,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:32:34,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:32:34,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:32:34,765 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 17:32:34,765 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 17:32:34,765 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 17:32:34,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:32:34,766 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:32:34,766 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:32:34,766 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:32:34,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:32:34,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:32:34,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:32:34,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:32:34,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:32:34,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:32:34,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:32:34,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:32:34,768 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:32:34,768 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:32:34,768 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:32:34,768 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_3dfa8482-f9b2-4549-8327-ac880105bb93/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dfa8482-f9b2-4549-8327-ac880105bb93/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f830c559346dfed293d38cb3f451f57bf45496349320c2696ae4150a4c0c44e9 [2022-11-25 17:32:35,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:32:35,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:32:35,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:32:35,143 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:32:35,145 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:32:35,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dfa8482-f9b2-4549-8327-ac880105bb93/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-wmm/safe024_tso.i [2022-11-25 17:32:38,271 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:32:38,525 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:32:38,526 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dfa8482-f9b2-4549-8327-ac880105bb93/sv-benchmarks/c/pthread-wmm/safe024_tso.i [2022-11-25 17:32:38,542 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dfa8482-f9b2-4549-8327-ac880105bb93/bin/uautomizer-ZsLfNo2U6R/data/8d2440bc9/905e585c0e6e4a178070cfc9eaa9cf6c/FLAGb04d7dcd3 [2022-11-25 17:32:38,567 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dfa8482-f9b2-4549-8327-ac880105bb93/bin/uautomizer-ZsLfNo2U6R/data/8d2440bc9/905e585c0e6e4a178070cfc9eaa9cf6c [2022-11-25 17:32:38,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:32:38,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:32:38,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:32:38,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:32:38,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:32:38,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:32:38" (1/1) ... [2022-11-25 17:32:38,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b88eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:38, skipping insertion in model container [2022-11-25 17:32:38,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:32:38" (1/1) ... [2022-11-25 17:32:38,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:32:38,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:32:38,880 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_3dfa8482-f9b2-4549-8327-ac880105bb93/sv-benchmarks/c/pthread-wmm/safe024_tso.i[945,958] [2022-11-25 17:32:39,126 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,127 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,127 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,129 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,129 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,130 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,130 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,131 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,131 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,132 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,134 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,134 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,137 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,138 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,139 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,140 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,141 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,141 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,142 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,143 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,156 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,159 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,161 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,161 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,162 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,164 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:32:39,177 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:32:39,193 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_3dfa8482-f9b2-4549-8327-ac880105bb93/sv-benchmarks/c/pthread-wmm/safe024_tso.i[945,958] [2022-11-25 17:32:39,237 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,237 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,237 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,238 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,238 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,238 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,238 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,239 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,239 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,239 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,240 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,240 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,241 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,241 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,241 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,242 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,242 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,242 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,243 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,243 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,244 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,244 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,244 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,244 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,245 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,245 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,257 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,259 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,261 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,262 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,262 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:39,263 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:39,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:32:39,315 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:32:39,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:39 WrapperNode [2022-11-25 17:32:39,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:32:39,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:32:39,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:32:39,319 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:32:39,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:39" (1/1) ... [2022-11-25 17:32:39,342 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:39" (1/1) ... [2022-11-25 17:32:39,372 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2022-11-25 17:32:39,373 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:32:39,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:32:39,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:32:39,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:32:39,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:39" (1/1) ... [2022-11-25 17:32:39,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:39" (1/1) ... [2022-11-25 17:32:39,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:39" (1/1) ... [2022-11-25 17:32:39,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:39" (1/1) ... [2022-11-25 17:32:39,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:39" (1/1) ... [2022-11-25 17:32:39,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:39" (1/1) ... [2022-11-25 17:32:39,400 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:39" (1/1) ... [2022-11-25 17:32:39,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:39" (1/1) ... [2022-11-25 17:32:39,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:32:39,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:32:39,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:32:39,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:32:39,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:39" (1/1) ... [2022-11-25 17:32:39,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:32:39,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dfa8482-f9b2-4549-8327-ac880105bb93/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:32:39,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dfa8482-f9b2-4549-8327-ac880105bb93/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:32:39,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dfa8482-f9b2-4549-8327-ac880105bb93/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:32:39,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:32:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:32:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:32:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:32:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:32:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-25 17:32:39,511 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-25 17:32:39,511 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-25 17:32:39,511 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-25 17:32:39,511 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-25 17:32:39,511 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-25 17:32:39,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:32:39,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:32:39,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:32:39,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:32:39,513 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 17:32:39,716 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:32:39,718 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:32:39,960 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:32:39,967 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:32:39,972 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:32:39,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:32:39 BoogieIcfgContainer [2022-11-25 17:32:39,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:32:39,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:32:39,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:32:39,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:32:39,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:32:38" (1/3) ... [2022-11-25 17:32:39,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3099b55f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:32:39, skipping insertion in model container [2022-11-25 17:32:39,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:39" (2/3) ... [2022-11-25 17:32:39,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3099b55f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:32:39, skipping insertion in model container [2022-11-25 17:32:39,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:32:39" (3/3) ... [2022-11-25 17:32:39,987 INFO L112 eAbstractionObserver]: Analyzing ICFG safe024_tso.i [2022-11-25 17:32:40,009 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:32:40,010 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-25 17:32:40,010 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:32:40,078 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:32:40,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 103 transitions, 221 flow [2022-11-25 17:32:40,195 INFO L130 PetriNetUnfolder]: 2/100 cut-off events. [2022-11-25 17:32:40,196 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:32:40,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 100 events. 2/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2022-11-25 17:32:40,201 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 103 transitions, 221 flow [2022-11-25 17:32:40,207 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 95 transitions, 199 flow [2022-11-25 17:32:40,211 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:32:40,227 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 95 transitions, 199 flow [2022-11-25 17:32:40,230 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 95 transitions, 199 flow [2022-11-25 17:32:40,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 95 transitions, 199 flow [2022-11-25 17:32:40,259 INFO L130 PetriNetUnfolder]: 2/95 cut-off events. [2022-11-25 17:32:40,259 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:32:40,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 95 events. 2/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2022-11-25 17:32:40,261 INFO L119 LiptonReduction]: Number of co-enabled transitions 1620 [2022-11-25 17:32:43,893 INFO L134 LiptonReduction]: Checked pairs total: 3438 [2022-11-25 17:32:43,893 INFO L136 LiptonReduction]: Total number of compositions: 97 [2022-11-25 17:32:43,926 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:32:43,933 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;@38183102, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:32:43,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-25 17:32:43,935 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-25 17:32:43,935 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:32:43,936 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:32:43,936 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 17:32:43,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-25 17:32:43,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:32:43,943 INFO L85 PathProgramCache]: Analyzing trace with hash 358, now seen corresponding path program 1 times [2022-11-25 17:32:43,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:32:43,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195625239] [2022-11-25 17:32:43,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:43,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:32:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:44,071 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 17:32:44,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:32:44,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195625239] [2022-11-25 17:32:44,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195625239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:32:44,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:32:44,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 17:32:44,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566270122] [2022-11-25 17:32:44,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:32:44,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:32:44,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:32:44,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:32:44,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:32:44,130 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 200 [2022-11-25 17:32:44,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 57 flow. Second operand has 2 states, 2 states have (on average 97.5) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:44,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:32:44,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 200 [2022-11-25 17:32:44,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:32:44,293 INFO L130 PetriNetUnfolder]: 218/376 cut-off events. [2022-11-25 17:32:44,293 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 17:32:44,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 758 conditions, 376 events. 218/376 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1592 event pairs, 218 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 747. Up to 352 conditions per place. [2022-11-25 17:32:44,301 INFO L137 encePairwiseOnDemand]: 194/200 looper letters, 15 selfloop transitions, 0 changer transitions 0/18 dead transitions. [2022-11-25 17:32:44,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 75 flow [2022-11-25 17:32:44,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:32:44,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:32:44,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 215 transitions. [2022-11-25 17:32:44,321 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5375 [2022-11-25 17:32:44,322 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 215 transitions. [2022-11-25 17:32:44,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 215 transitions. [2022-11-25 17:32:44,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:32:44,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 215 transitions. [2022-11-25 17:32:44,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 107.5) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:44,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:44,343 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:44,345 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 57 flow. Second operand 2 states and 215 transitions. [2022-11-25 17:32:44,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 75 flow [2022-11-25 17:32:44,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 18 transitions, 72 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 17:32:44,350 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 42 flow [2022-11-25 17:32:44,353 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2022-11-25 17:32:44,367 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -8 predicate places. [2022-11-25 17:32:44,370 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 42 flow [2022-11-25 17:32:44,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 97.5) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:44,371 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:32:44,371 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:32:44,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:32:44,372 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-25 17:32:44,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:32:44,372 INFO L85 PathProgramCache]: Analyzing trace with hash -976350315, now seen corresponding path program 1 times [2022-11-25 17:32:44,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:32:44,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104684642] [2022-11-25 17:32:44,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:44,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:32:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:44,887 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 17:32:44,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:32:44,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104684642] [2022-11-25 17:32:44,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104684642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:32:44,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:32:44,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:32:44,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518922436] [2022-11-25 17:32:44,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:32:44,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:32:44,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:32:44,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:32:44,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:32:44,908 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 200 [2022-11-25 17:32:44,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:44,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:32:44,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 200 [2022-11-25 17:32:44,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:32:45,042 INFO L130 PetriNetUnfolder]: 439/704 cut-off events. [2022-11-25 17:32:45,043 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:32:45,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1441 conditions, 704 events. 439/704 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3099 event pairs, 147 based on Foata normal form. 0/660 useless extension candidates. Maximal degree in co-relation 1438. Up to 531 conditions per place. [2022-11-25 17:32:45,052 INFO L137 encePairwiseOnDemand]: 194/200 looper letters, 26 selfloop transitions, 5 changer transitions 0/32 dead transitions. [2022-11-25 17:32:45,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 32 transitions, 136 flow [2022-11-25 17:32:45,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:32:45,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:32:45,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2022-11-25 17:32:45,059 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2022-11-25 17:32:45,059 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 305 transitions. [2022-11-25 17:32:45,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 305 transitions. [2022-11-25 17:32:45,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:32:45,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 305 transitions. [2022-11-25 17:32:45,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:45,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:45,066 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:45,066 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 42 flow. Second operand 3 states and 305 transitions. [2022-11-25 17:32:45,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 32 transitions, 136 flow [2022-11-25 17:32:45,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 32 transitions, 136 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:32:45,068 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 80 flow [2022-11-25 17:32:45,069 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2022-11-25 17:32:45,069 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2022-11-25 17:32:45,070 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 80 flow [2022-11-25 17:32:45,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:45,070 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:32:45,071 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:32:45,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:32:45,071 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-25 17:32:45,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:32:45,072 INFO L85 PathProgramCache]: Analyzing trace with hash -976350314, now seen corresponding path program 1 times [2022-11-25 17:32:45,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:32:45,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126863520] [2022-11-25 17:32:45,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:45,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:32:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:45,551 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 17:32:45,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:32:45,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126863520] [2022-11-25 17:32:45,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126863520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:32:45,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:32:45,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:32:45,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189136004] [2022-11-25 17:32:45,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:32:45,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:32:45,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:32:45,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:32:45,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:32:45,787 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 200 [2022-11-25 17:32:45,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 80 flow. Second operand has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:45,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:32:45,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 200 [2022-11-25 17:32:45,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:32:45,896 INFO L130 PetriNetUnfolder]: 216/373 cut-off events. [2022-11-25 17:32:45,902 INFO L131 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2022-11-25 17:32:45,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 861 conditions, 373 events. 216/373 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1470 event pairs, 93 based on Foata normal form. 46/417 useless extension candidates. Maximal degree in co-relation 856. Up to 299 conditions per place. [2022-11-25 17:32:45,907 INFO L137 encePairwiseOnDemand]: 196/200 looper letters, 18 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2022-11-25 17:32:45,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 25 transitions, 118 flow [2022-11-25 17:32:45,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:32:45,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:32:45,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 431 transitions. [2022-11-25 17:32:45,910 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.431 [2022-11-25 17:32:45,910 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 431 transitions. [2022-11-25 17:32:45,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 431 transitions. [2022-11-25 17:32:45,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:32:45,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 431 transitions. [2022-11-25 17:32:45,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:45,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:45,916 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:45,916 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 80 flow. Second operand 5 states and 431 transitions. [2022-11-25 17:32:45,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 25 transitions, 118 flow [2022-11-25 17:32:45,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 25 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:32:45,919 INFO L231 Difference]: Finished difference. Result has 31 places, 19 transitions, 64 flow [2022-11-25 17:32:45,919 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=64, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2022-11-25 17:32:45,921 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2022-11-25 17:32:45,921 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 64 flow [2022-11-25 17:32:45,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:45,922 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:32:45,922 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:32:45,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:32:45,923 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-25 17:32:45,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:32:45,923 INFO L85 PathProgramCache]: Analyzing trace with hash -202090687, now seen corresponding path program 1 times [2022-11-25 17:32:45,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:32:45,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986245157] [2022-11-25 17:32:45,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:45,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:32:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:46,108 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 17:32:46,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:32:46,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986245157] [2022-11-25 17:32:46,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986245157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:32:46,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:32:46,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:32:46,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678223661] [2022-11-25 17:32:46,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:32:46,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:32:46,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:32:46,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:32:46,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:32:46,122 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 200 [2022-11-25 17:32:46,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:46,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:32:46,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 200 [2022-11-25 17:32:46,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:32:46,235 INFO L130 PetriNetUnfolder]: 265/473 cut-off events. [2022-11-25 17:32:46,235 INFO L131 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2022-11-25 17:32:46,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1056 conditions, 473 events. 265/473 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2007 event pairs, 91 based on Foata normal form. 52/524 useless extension candidates. Maximal degree in co-relation 1051. Up to 138 conditions per place. [2022-11-25 17:32:46,238 INFO L137 encePairwiseOnDemand]: 196/200 looper letters, 21 selfloop transitions, 4 changer transitions 4/32 dead transitions. [2022-11-25 17:32:46,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 32 transitions, 156 flow [2022-11-25 17:32:46,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:32:46,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:32:46,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 401 transitions. [2022-11-25 17:32:46,241 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.50125 [2022-11-25 17:32:46,241 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 401 transitions. [2022-11-25 17:32:46,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 401 transitions. [2022-11-25 17:32:46,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:32:46,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 401 transitions. [2022-11-25 17:32:46,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.25) internal successors, (401), 4 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 17:32:46,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 200.0) internal successors, (1000), 5 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:46,245 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 200.0) internal successors, (1000), 5 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:46,245 INFO L175 Difference]: Start difference. First operand has 31 places, 19 transitions, 64 flow. Second operand 4 states and 401 transitions. [2022-11-25 17:32:46,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 32 transitions, 156 flow [2022-11-25 17:32:46,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 150 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 17:32:46,247 INFO L231 Difference]: Finished difference. Result has 33 places, 19 transitions, 76 flow [2022-11-25 17:32:46,247 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=76, PETRI_PLACES=33, PETRI_TRANSITIONS=19} [2022-11-25 17:32:46,248 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2022-11-25 17:32:46,248 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 19 transitions, 76 flow [2022-11-25 17:32:46,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:46,249 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:32:46,249 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:32:46,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:32:46,250 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-25 17:32:46,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:32:46,250 INFO L85 PathProgramCache]: Analyzing trace with hash 81731732, now seen corresponding path program 1 times [2022-11-25 17:32:46,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:32:46,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087188047] [2022-11-25 17:32:46,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:46,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:32:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:46,376 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 17:32:46,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:32:46,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087188047] [2022-11-25 17:32:46,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087188047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:32:46,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:32:46,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:32:46,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820511189] [2022-11-25 17:32:46,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:32:46,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:32:46,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:32:46,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:32:46,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:32:46,391 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 200 [2022-11-25 17:32:46,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 19 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 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 17:32:46,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:32:46,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 200 [2022-11-25 17:32:46,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:32:46,481 INFO L130 PetriNetUnfolder]: 125/244 cut-off events. [2022-11-25 17:32:46,481 INFO L131 PetriNetUnfolder]: For 283/296 co-relation queries the response was YES. [2022-11-25 17:32:46,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 653 conditions, 244 events. 125/244 cut-off events. For 283/296 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 946 event pairs, 34 based on Foata normal form. 28/263 useless extension candidates. Maximal degree in co-relation 646. Up to 144 conditions per place. [2022-11-25 17:32:46,483 INFO L137 encePairwiseOnDemand]: 194/200 looper letters, 29 selfloop transitions, 7 changer transitions 5/45 dead transitions. [2022-11-25 17:32:46,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 45 transitions, 245 flow [2022-11-25 17:32:46,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:32:46,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:32:46,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 499 transitions. [2022-11-25 17:32:46,485 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.499 [2022-11-25 17:32:46,486 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 499 transitions. [2022-11-25 17:32:46,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 499 transitions. [2022-11-25 17:32:46,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:32:46,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 499 transitions. [2022-11-25 17:32:46,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:46,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:46,491 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:46,491 INFO L175 Difference]: Start difference. First operand has 33 places, 19 transitions, 76 flow. Second operand 5 states and 499 transitions. [2022-11-25 17:32:46,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 45 transitions, 245 flow [2022-11-25 17:32:46,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 45 transitions, 234 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:32:46,493 INFO L231 Difference]: Finished difference. Result has 38 places, 25 transitions, 125 flow [2022-11-25 17:32:46,493 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=125, PETRI_PLACES=38, PETRI_TRANSITIONS=25} [2022-11-25 17:32:46,494 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2022-11-25 17:32:46,494 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 25 transitions, 125 flow [2022-11-25 17:32:46,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 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 17:32:46,495 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:32:46,495 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:32:46,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:32:46,495 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-25 17:32:46,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:32:46,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1842367369, now seen corresponding path program 1 times [2022-11-25 17:32:46,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:32:46,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438695581] [2022-11-25 17:32:46,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:46,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:32:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:46,645 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 17:32:46,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:32:46,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438695581] [2022-11-25 17:32:46,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438695581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:32:46,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:32:46,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:32:46,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980910908] [2022-11-25 17:32:46,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:32:46,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:32:46,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:32:46,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:32:46,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:32:46,665 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 200 [2022-11-25 17:32:46,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 25 transitions, 125 flow. Second operand has 5 states, 5 states have (on average 94.2) internal successors, (471), 5 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:46,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:32:46,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 200 [2022-11-25 17:32:46,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:32:46,774 INFO L130 PetriNetUnfolder]: 100/212 cut-off events. [2022-11-25 17:32:46,775 INFO L131 PetriNetUnfolder]: For 452/496 co-relation queries the response was YES. [2022-11-25 17:32:46,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 746 conditions, 212 events. 100/212 cut-off events. For 452/496 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 826 event pairs, 15 based on Foata normal form. 41/248 useless extension candidates. Maximal degree in co-relation 736. Up to 99 conditions per place. [2022-11-25 17:32:46,777 INFO L137 encePairwiseOnDemand]: 194/200 looper letters, 32 selfloop transitions, 13 changer transitions 8/57 dead transitions. [2022-11-25 17:32:46,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 373 flow [2022-11-25 17:32:46,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:32:46,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:32:46,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 695 transitions. [2022-11-25 17:32:46,780 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49642857142857144 [2022-11-25 17:32:46,780 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 695 transitions. [2022-11-25 17:32:46,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 695 transitions. [2022-11-25 17:32:46,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:32:46,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 695 transitions. [2022-11-25 17:32:46,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 99.28571428571429) internal successors, (695), 7 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:46,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 200.0) internal successors, (1600), 8 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:46,786 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 200.0) internal successors, (1600), 8 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:46,786 INFO L175 Difference]: Start difference. First operand has 38 places, 25 transitions, 125 flow. Second operand 7 states and 695 transitions. [2022-11-25 17:32:46,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 373 flow [2022-11-25 17:32:46,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 57 transitions, 369 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:32:46,790 INFO L231 Difference]: Finished difference. Result has 46 places, 31 transitions, 209 flow [2022-11-25 17:32:46,791 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=209, PETRI_PLACES=46, PETRI_TRANSITIONS=31} [2022-11-25 17:32:46,791 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2022-11-25 17:32:46,792 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 31 transitions, 209 flow [2022-11-25 17:32:46,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.2) internal successors, (471), 5 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:46,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:32:46,792 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:32:46,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:32:46,793 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-25 17:32:46,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:32:46,793 INFO L85 PathProgramCache]: Analyzing trace with hash -991024528, now seen corresponding path program 1 times [2022-11-25 17:32:46,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:32:46,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108928863] [2022-11-25 17:32:46,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:46,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:32:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:46,934 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 17:32:46,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:32:46,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108928863] [2022-11-25 17:32:46,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108928863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:32:46,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:32:46,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:32:46,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796718393] [2022-11-25 17:32:46,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:32:46,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:32:46,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:32:46,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:32:46,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:32:46,959 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 200 [2022-11-25 17:32:46,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 31 transitions, 209 flow. Second operand has 6 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:46,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:32:46,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 200 [2022-11-25 17:32:46,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:32:47,091 INFO L130 PetriNetUnfolder]: 85/189 cut-off events. [2022-11-25 17:32:47,091 INFO L131 PetriNetUnfolder]: For 599/642 co-relation queries the response was YES. [2022-11-25 17:32:47,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 766 conditions, 189 events. 85/189 cut-off events. For 599/642 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 732 event pairs, 12 based on Foata normal form. 33/218 useless extension candidates. Maximal degree in co-relation 753. Up to 86 conditions per place. [2022-11-25 17:32:47,093 INFO L137 encePairwiseOnDemand]: 194/200 looper letters, 29 selfloop transitions, 17 changer transitions 7/57 dead transitions. [2022-11-25 17:32:47,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 431 flow [2022-11-25 17:32:47,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:32:47,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 17:32:47,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 879 transitions. [2022-11-25 17:32:47,096 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48833333333333334 [2022-11-25 17:32:47,097 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 879 transitions. [2022-11-25 17:32:47,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 879 transitions. [2022-11-25 17:32:47,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:32:47,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 879 transitions. [2022-11-25 17:32:47,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 97.66666666666667) internal successors, (879), 9 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:47,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:47,103 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:47,104 INFO L175 Difference]: Start difference. First operand has 46 places, 31 transitions, 209 flow. Second operand 9 states and 879 transitions. [2022-11-25 17:32:47,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 431 flow [2022-11-25 17:32:47,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 401 flow, removed 11 selfloop flow, removed 2 redundant places. [2022-11-25 17:32:47,110 INFO L231 Difference]: Finished difference. Result has 55 places, 32 transitions, 235 flow [2022-11-25 17:32:47,110 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=235, PETRI_PLACES=55, PETRI_TRANSITIONS=32} [2022-11-25 17:32:47,110 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 21 predicate places. [2022-11-25 17:32:47,111 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 32 transitions, 235 flow [2022-11-25 17:32:47,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:47,111 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:32:47,111 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:32:47,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:32:47,112 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-25 17:32:47,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:32:47,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1073332287, now seen corresponding path program 1 times [2022-11-25 17:32:47,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:32:47,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69133596] [2022-11-25 17:32:47,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:47,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:32:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:47,241 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 17:32:47,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:32:47,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69133596] [2022-11-25 17:32:47,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69133596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:32:47,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:32:47,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:32:47,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630349122] [2022-11-25 17:32:47,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:32:47,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:32:47,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:32:47,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:32:47,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:32:47,261 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 200 [2022-11-25 17:32:47,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 32 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:47,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:32:47,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 200 [2022-11-25 17:32:47,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:32:47,400 INFO L130 PetriNetUnfolder]: 160/324 cut-off events. [2022-11-25 17:32:47,400 INFO L131 PetriNetUnfolder]: For 926/928 co-relation queries the response was YES. [2022-11-25 17:32:47,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 324 events. 160/324 cut-off events. For 926/928 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1410 event pairs, 14 based on Foata normal form. 2/325 useless extension candidates. Maximal degree in co-relation 1318. Up to 182 conditions per place. [2022-11-25 17:32:47,403 INFO L137 encePairwiseOnDemand]: 194/200 looper letters, 33 selfloop transitions, 7 changer transitions 37/78 dead transitions. [2022-11-25 17:32:47,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 78 transitions, 720 flow [2022-11-25 17:32:47,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:32:47,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:32:47,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 486 transitions. [2022-11-25 17:32:47,406 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.486 [2022-11-25 17:32:47,406 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 486 transitions. [2022-11-25 17:32:47,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 486 transitions. [2022-11-25 17:32:47,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:32:47,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 486 transitions. [2022-11-25 17:32:47,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:47,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:47,411 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:47,411 INFO L175 Difference]: Start difference. First operand has 55 places, 32 transitions, 235 flow. Second operand 5 states and 486 transitions. [2022-11-25 17:32:47,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 78 transitions, 720 flow [2022-11-25 17:32:47,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 78 transitions, 579 flow, removed 28 selfloop flow, removed 8 redundant places. [2022-11-25 17:32:47,417 INFO L231 Difference]: Finished difference. Result has 52 places, 27 transitions, 163 flow [2022-11-25 17:32:47,418 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=163, PETRI_PLACES=52, PETRI_TRANSITIONS=27} [2022-11-25 17:32:47,418 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 18 predicate places. [2022-11-25 17:32:47,419 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 27 transitions, 163 flow [2022-11-25 17:32:47,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:47,419 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:32:47,419 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:32:47,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:32:47,420 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-25 17:32:47,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:32:47,420 INFO L85 PathProgramCache]: Analyzing trace with hash 309891949, now seen corresponding path program 2 times [2022-11-25 17:32:47,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:32:47,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242402441] [2022-11-25 17:32:47,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:47,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:32:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:47,583 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 17:32:47,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:32:47,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242402441] [2022-11-25 17:32:47,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242402441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:32:47,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:32:47,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:32:47,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446473099] [2022-11-25 17:32:47,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:32:47,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:32:47,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:32:47,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:32:47,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:32:47,604 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 200 [2022-11-25 17:32:47,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 27 transitions, 163 flow. Second operand has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:47,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:32:47,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 200 [2022-11-25 17:32:47,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:32:47,703 INFO L130 PetriNetUnfolder]: 56/129 cut-off events. [2022-11-25 17:32:47,703 INFO L131 PetriNetUnfolder]: For 274/279 co-relation queries the response was YES. [2022-11-25 17:32:47,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 129 events. 56/129 cut-off events. For 274/279 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 402 event pairs, 6 based on Foata normal form. 4/132 useless extension candidates. Maximal degree in co-relation 492. Up to 40 conditions per place. [2022-11-25 17:32:47,704 INFO L137 encePairwiseOnDemand]: 195/200 looper letters, 24 selfloop transitions, 3 changer transitions 20/48 dead transitions. [2022-11-25 17:32:47,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 364 flow [2022-11-25 17:32:47,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:32:47,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:32:47,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 568 transitions. [2022-11-25 17:32:47,707 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47333333333333333 [2022-11-25 17:32:47,707 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 568 transitions. [2022-11-25 17:32:47,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 568 transitions. [2022-11-25 17:32:47,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:32:47,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 568 transitions. [2022-11-25 17:32:47,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.66666666666667) internal successors, (568), 6 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 17:32:47,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 200.0) internal successors, (1400), 7 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:47,713 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 200.0) internal successors, (1400), 7 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:47,713 INFO L175 Difference]: Start difference. First operand has 52 places, 27 transitions, 163 flow. Second operand 6 states and 568 transitions. [2022-11-25 17:32:47,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 364 flow [2022-11-25 17:32:47,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 342 flow, removed 7 selfloop flow, removed 7 redundant places. [2022-11-25 17:32:47,717 INFO L231 Difference]: Finished difference. Result has 46 places, 23 transitions, 120 flow [2022-11-25 17:32:47,718 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=120, PETRI_PLACES=46, PETRI_TRANSITIONS=23} [2022-11-25 17:32:47,719 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2022-11-25 17:32:47,719 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 23 transitions, 120 flow [2022-11-25 17:32:47,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:47,722 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:32:47,723 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:32:47,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:32:47,723 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-25 17:32:47,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:32:47,724 INFO L85 PathProgramCache]: Analyzing trace with hash -619318971, now seen corresponding path program 3 times [2022-11-25 17:32:47,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:32:47,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20150803] [2022-11-25 17:32:47,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:47,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:32:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:47,873 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 17:32:47,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:32:47,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20150803] [2022-11-25 17:32:47,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20150803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:32:47,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:32:47,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:32:47,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763431926] [2022-11-25 17:32:47,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:32:47,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:32:47,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:32:47,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:32:47,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:32:47,882 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 200 [2022-11-25 17:32:47,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 23 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:47,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:32:47,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 200 [2022-11-25 17:32:47,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:32:47,925 INFO L130 PetriNetUnfolder]: 21/61 cut-off events. [2022-11-25 17:32:47,925 INFO L131 PetriNetUnfolder]: For 107/107 co-relation queries the response was YES. [2022-11-25 17:32:47,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 61 events. 21/61 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 125 event pairs, 5 based on Foata normal form. 1/62 useless extension candidates. Maximal degree in co-relation 226. Up to 27 conditions per place. [2022-11-25 17:32:47,926 INFO L137 encePairwiseOnDemand]: 197/200 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2022-11-25 17:32:47,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 28 transitions, 197 flow [2022-11-25 17:32:47,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:32:47,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:32:47,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 391 transitions. [2022-11-25 17:32:47,927 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48875 [2022-11-25 17:32:47,927 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 391 transitions. [2022-11-25 17:32:47,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 391 transitions. [2022-11-25 17:32:47,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:32:47,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 391 transitions. [2022-11-25 17:32:47,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:47,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 200.0) internal successors, (1000), 5 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:47,933 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 200.0) internal successors, (1000), 5 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:47,933 INFO L175 Difference]: Start difference. First operand has 46 places, 23 transitions, 120 flow. Second operand 4 states and 391 transitions. [2022-11-25 17:32:47,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 28 transitions, 197 flow [2022-11-25 17:32:47,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 28 transitions, 186 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-25 17:32:47,935 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2022-11-25 17:32:47,936 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2022-11-25 17:32:47,937 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2022-11-25 17:32:47,937 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2022-11-25 17:32:47,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:47,940 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2022-11-25 17:32:47,940 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2022-11-25 17:32:47,941 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2022-11-25 17:32:47,941 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2022-11-25 17:32:47,941 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2022-11-25 17:32:47,941 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2022-11-25 17:32:47,941 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2022-11-25 17:32:47,941 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2022-11-25 17:32:47,942 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2022-11-25 17:32:47,942 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2022-11-25 17:32:47,942 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2022-11-25 17:32:47,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:32:47,942 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:32:47,946 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 17:32:47,946 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:32:47,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:32:47 BasicIcfg [2022-11-25 17:32:47,951 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:32:47,952 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:32:47,952 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:32:47,952 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:32:47,953 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:32:39" (3/4) ... [2022-11-25 17:32:47,956 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 17:32:47,963 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-25 17:32:47,963 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-25 17:32:47,963 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-25 17:32:47,970 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-25 17:32:47,970 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 17:32:47,970 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-25 17:32:47,970 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 17:32:48,011 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dfa8482-f9b2-4549-8327-ac880105bb93/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:32:48,011 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:32:48,012 INFO L158 Benchmark]: Toolchain (without parser) took 9435.62ms. Allocated memory was 163.6MB in the beginning and 239.1MB in the end (delta: 75.5MB). Free memory was 127.3MB in the beginning and 103.0MB in the end (delta: 24.3MB). Peak memory consumption was 99.3MB. Max. memory is 16.1GB. [2022-11-25 17:32:48,012 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 130.0MB. Free memory was 100.2MB in the beginning and 100.1MB in the end (delta: 69.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:32:48,012 INFO L158 Benchmark]: CACSL2BoogieTranslator took 737.50ms. Allocated memory is still 163.6MB. Free memory was 127.0MB in the beginning and 119.7MB in the end (delta: 7.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 17:32:48,013 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.13ms. Allocated memory is still 163.6MB. Free memory was 119.7MB in the beginning and 117.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:32:48,013 INFO L158 Benchmark]: Boogie Preprocessor took 43.41ms. Allocated memory is still 163.6MB. Free memory was 117.6MB in the beginning and 116.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:32:48,013 INFO L158 Benchmark]: RCFGBuilder took 557.39ms. Allocated memory is still 163.6MB. Free memory was 116.1MB in the beginning and 101.4MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 17:32:48,014 INFO L158 Benchmark]: TraceAbstraction took 7972.25ms. Allocated memory was 163.6MB in the beginning and 239.1MB in the end (delta: 75.5MB). Free memory was 100.8MB in the beginning and 106.2MB in the end (delta: -5.4MB). Peak memory consumption was 72.9MB. Max. memory is 16.1GB. [2022-11-25 17:32:48,014 INFO L158 Benchmark]: Witness Printer took 59.15ms. Allocated memory is still 239.1MB. Free memory was 106.2MB in the beginning and 103.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:32:48,016 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 130.0MB. Free memory was 100.2MB in the beginning and 100.1MB in the end (delta: 69.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 737.50ms. Allocated memory is still 163.6MB. Free memory was 127.0MB in the beginning and 119.7MB in the end (delta: 7.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.13ms. Allocated memory is still 163.6MB. Free memory was 119.7MB in the beginning and 117.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.41ms. Allocated memory is still 163.6MB. Free memory was 117.6MB in the beginning and 116.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 557.39ms. Allocated memory is still 163.6MB. Free memory was 116.1MB in the beginning and 101.4MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 7972.25ms. Allocated memory was 163.6MB in the beginning and 239.1MB in the end (delta: 75.5MB). Free memory was 100.8MB in the beginning and 106.2MB in the end (delta: -5.4MB). Peak memory consumption was 72.9MB. Max. memory is 16.1GB. * Witness Printer took 59.15ms. Allocated memory is still 239.1MB. Free memory was 106.2MB in the beginning and 103.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.7s, 103 PlacesBefore, 34 PlacesAfterwards, 95 TransitionsBefore, 24 TransitionsAfterwards, 1620 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 54 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 97 TotalNumberOfCompositions, 3438 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2087, independent: 1983, independent conditional: 0, independent unconditional: 1983, dependent: 104, dependent conditional: 0, dependent unconditional: 104, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1197, independent: 1163, independent conditional: 0, independent unconditional: 1163, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1197, independent: 1157, independent conditional: 0, independent unconditional: 1157, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 40, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 106, independent: 16, independent conditional: 0, independent unconditional: 16, dependent: 90, dependent conditional: 0, dependent unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2087, independent: 820, independent conditional: 0, independent unconditional: 820, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 1197, unknown conditional: 0, unknown unconditional: 1197] , Statistics on independence cache: Total cache size (in pairs): 94, Positive cache size: 83, Positive conditional cache size: 0, Positive unconditional cache size: 83, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 780]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 126 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.8s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 386 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 266 mSDsluCounter, 115 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 45 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 793 IncrementalHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 70 mSDtfsCounter, 793 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=235occurred in iteration=7, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 558 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 17:32:48,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dfa8482-f9b2-4549-8327-ac880105bb93/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE