./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaf068e-aee5-405b-9816-6738cb17a561/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaf068e-aee5-405b-9816-6738cb17a561/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_dcaf068e-aee5-405b-9816-6738cb17a561/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaf068e-aee5-405b-9816-6738cb17a561/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaf068e-aee5-405b-9816-6738cb17a561/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_dcaf068e-aee5-405b-9816-6738cb17a561/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 c947ca303cec71cbb6edeb9f866ed53067014e89778e5c242eb251405d7ab484 --- 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 17:45:35,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:45:35,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:45:35,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:45:36,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:45:36,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:45:36,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:45:36,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:45:36,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:45:36,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:45:36,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:45:36,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:45:36,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:45:36,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:45:36,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:45:36,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:45:36,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:45:36,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:45:36,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:45:36,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:45:36,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:45:36,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:45:36,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:45:36,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:45:36,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:45:36,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:45:36,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:45:36,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:45:36,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:45:36,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:45:36,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:45:36,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:45:36,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:45:36,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:45:36,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:45:36,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:45:36,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:45:36,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:45:36,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:45:36,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:45:36,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:45:36,043 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaf068e-aee5-405b-9816-6738cb17a561/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 17:45:36,067 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:45:36,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:45:36,068 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:45:36,068 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:45:36,069 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:45:36,070 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:45:36,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:45:36,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:45:36,071 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:45:36,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:45:36,071 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:45:36,072 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:45:36,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:45:36,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:45:36,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:45:36,073 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 17:45:36,073 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 17:45:36,073 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 17:45:36,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:45:36,074 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:45:36,074 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:45:36,074 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:45:36,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:45:36,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:45:36,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:45:36,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:45:36,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:45:36,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:45:36,076 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:45:36,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:45:36,077 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:45:36,077 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:45:36,077 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:45:36,077 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_dcaf068e-aee5-405b-9816-6738cb17a561/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaf068e-aee5-405b-9816-6738cb17a561/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c947ca303cec71cbb6edeb9f866ed53067014e89778e5c242eb251405d7ab484 [2022-11-25 17:45:36,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:45:36,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:45:36,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:45:36,455 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:45:36,455 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:45:36,457 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaf068e-aee5-405b-9816-6738cb17a561/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c [2022-11-25 17:45:39,604 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:45:39,812 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:45:39,812 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaf068e-aee5-405b-9816-6738cb17a561/sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c [2022-11-25 17:45:39,820 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaf068e-aee5-405b-9816-6738cb17a561/bin/uautomizer-ZsLfNo2U6R/data/3b1c95a28/1a481eb8b9dc4914a1d2020925d522c2/FLAGe18e6d044 [2022-11-25 17:45:39,836 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaf068e-aee5-405b-9816-6738cb17a561/bin/uautomizer-ZsLfNo2U6R/data/3b1c95a28/1a481eb8b9dc4914a1d2020925d522c2 [2022-11-25 17:45:39,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:45:39,841 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:45:39,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:45:39,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:45:39,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:45:39,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:45:39" (1/1) ... [2022-11-25 17:45:39,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27237615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:39, skipping insertion in model container [2022-11-25 17:45:39,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:45:39" (1/1) ... [2022-11-25 17:45:39,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:45:39,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:45:40,046 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:40,048 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:40,049 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:40,050 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:40,051 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:40,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:40,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:40,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:40,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:40,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:40,055 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:40,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:40,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:40,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:40,058 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:40,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:40,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:40,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:40,061 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:40,062 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:40,063 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:40,063 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:40,064 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:40,065 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:40,065 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:40,066 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:40,075 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_dcaf068e-aee5-405b-9816-6738cb17a561/sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c[3089,3102] [2022-11-25 17:45:40,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:45:40,093 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:45:40,108 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:40,109 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:40,109 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:40,110 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:40,110 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:40,111 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:40,111 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:40,112 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:40,112 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:40,116 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:40,117 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:40,119 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:40,119 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:40,121 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:40,121 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:40,122 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:40,124 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:40,124 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:40,126 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:40,128 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:40,128 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:40,129 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:40,132 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:40,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:40,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:40,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:40,141 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_dcaf068e-aee5-405b-9816-6738cb17a561/sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c[3089,3102] [2022-11-25 17:45:40,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:45:40,161 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:45:40,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:40 WrapperNode [2022-11-25 17:45:40,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:45:40,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:45:40,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:45:40,163 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:45:40,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:40" (1/1) ... [2022-11-25 17:45:40,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:40" (1/1) ... [2022-11-25 17:45:40,208 INFO L138 Inliner]: procedures = 22, calls = 55, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 158 [2022-11-25 17:45:40,208 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:45:40,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:45:40,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:45:40,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:45:40,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:40" (1/1) ... [2022-11-25 17:45:40,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:40" (1/1) ... [2022-11-25 17:45:40,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:40" (1/1) ... [2022-11-25 17:45:40,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:40" (1/1) ... [2022-11-25 17:45:40,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:40" (1/1) ... [2022-11-25 17:45:40,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:40" (1/1) ... [2022-11-25 17:45:40,249 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:40" (1/1) ... [2022-11-25 17:45:40,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:40" (1/1) ... [2022-11-25 17:45:40,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:45:40,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:45:40,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:45:40,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:45:40,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:40" (1/1) ... [2022-11-25 17:45:40,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:45:40,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaf068e-aee5-405b-9816-6738cb17a561/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:45:40,305 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaf068e-aee5-405b-9816-6738cb17a561/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:45:40,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaf068e-aee5-405b-9816-6738cb17a561/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:45:40,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:45:40,356 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:45:40,357 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:45:40,357 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:45:40,357 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:45:40,358 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 17:45:40,358 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 17:45:40,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:45:40,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:45:40,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:45:40,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:45:40,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:45:40,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:45:40,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:45:40,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:45:40,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:45:40,362 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 17:45:40,483 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:45:40,486 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:45:40,983 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:45:41,102 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:45:41,109 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:45:41,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:45:41 BoogieIcfgContainer [2022-11-25 17:45:41,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:45:41,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:45:41,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:45:41,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:45:41,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:45:39" (1/3) ... [2022-11-25 17:45:41,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641d5cef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:45:41, skipping insertion in model container [2022-11-25 17:45:41,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:40" (2/3) ... [2022-11-25 17:45:41,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641d5cef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:45:41, skipping insertion in model container [2022-11-25 17:45:41,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:45:41" (3/3) ... [2022-11-25 17:45:41,129 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-3.wvr.c [2022-11-25 17:45:41,155 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:45:41,156 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-25 17:45:41,156 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:45:41,294 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 17:45:41,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 135 transitions, 294 flow [2022-11-25 17:45:41,475 INFO L130 PetriNetUnfolder]: 2/132 cut-off events. [2022-11-25 17:45:41,475 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:45:41,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 2/132 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-11-25 17:45:41,481 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 135 transitions, 294 flow [2022-11-25 17:45:41,494 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 127 transitions, 272 flow [2022-11-25 17:45:41,500 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:45:41,526 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 127 transitions, 272 flow [2022-11-25 17:45:41,529 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 127 transitions, 272 flow [2022-11-25 17:45:41,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 127 transitions, 272 flow [2022-11-25 17:45:41,565 INFO L130 PetriNetUnfolder]: 2/127 cut-off events. [2022-11-25 17:45:41,565 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:45:41,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 127 events. 2/127 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-11-25 17:45:41,568 INFO L119 LiptonReduction]: Number of co-enabled transitions 930 [2022-11-25 17:45:49,188 INFO L134 LiptonReduction]: Checked pairs total: 2508 [2022-11-25 17:45:49,189 INFO L136 LiptonReduction]: Total number of compositions: 125 [2022-11-25 17:45:49,205 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:45:49,212 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;@6c0906f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:45:49,213 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-25 17:45:49,214 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-25 17:45:49,215 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:45:49,215 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:49,215 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 17:45:49,216 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:45:49,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:49,221 INFO L85 PathProgramCache]: Analyzing trace with hash 541, now seen corresponding path program 1 times [2022-11-25 17:45:49,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:49,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585972184] [2022-11-25 17:45:49,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:49,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:49,346 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 17:45:49,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:49,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585972184] [2022-11-25 17:45:49,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585972184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:49,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:49,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 17:45:49,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563955241] [2022-11-25 17:45:49,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:49,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:45:49,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:49,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:45:49,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:45:49,400 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 260 [2022-11-25 17:45:49,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 84 flow. Second operand has 2 states, 2 states have (on average 117.5) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:49,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:49,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 260 [2022-11-25 17:45:49,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:49,649 INFO L130 PetriNetUnfolder]: 401/660 cut-off events. [2022-11-25 17:45:49,649 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-11-25 17:45:49,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1372 conditions, 660 events. 401/660 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2433 event pairs, 401 based on Foata normal form. 0/532 useless extension candidates. Maximal degree in co-relation 1136. Up to 661 conditions per place. [2022-11-25 17:45:49,661 INFO L137 encePairwiseOnDemand]: 257/260 looper letters, 30 selfloop transitions, 0 changer transitions 0/30 dead transitions. [2022-11-25 17:45:49,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 30 transitions, 138 flow [2022-11-25 17:45:49,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:45:49,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:45:49,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 267 transitions. [2022-11-25 17:45:49,686 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5134615384615384 [2022-11-25 17:45:49,686 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 267 transitions. [2022-11-25 17:45:49,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 267 transitions. [2022-11-25 17:45:49,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:49,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 267 transitions. [2022-11-25 17:45:49,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:49,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:49,705 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:49,707 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 84 flow. Second operand 2 states and 267 transitions. [2022-11-25 17:45:49,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 30 transitions, 138 flow [2022-11-25 17:45:49,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 126 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-25 17:45:49,716 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 66 flow [2022-11-25 17:45:49,718 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=66, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2022-11-25 17:45:49,722 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -8 predicate places. [2022-11-25 17:45:49,722 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 66 flow [2022-11-25 17:45:49,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 117.5) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:49,723 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:49,723 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:45:49,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:45:49,723 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:45:49,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:49,734 INFO L85 PathProgramCache]: Analyzing trace with hash 530172, now seen corresponding path program 1 times [2022-11-25 17:45:49,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:49,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440549124] [2022-11-25 17:45:49,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:49,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:50,049 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 17:45:50,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:50,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440549124] [2022-11-25 17:45:50,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440549124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:50,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:50,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:45:50,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531047204] [2022-11-25 17:45:50,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:50,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:45:50,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:50,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:45:50,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:45:50,115 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 260 [2022-11-25 17:45:50,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:50,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:50,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 260 [2022-11-25 17:45:50,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:50,241 INFO L130 PetriNetUnfolder]: 386/632 cut-off events. [2022-11-25 17:45:50,241 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 17:45:50,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1284 conditions, 632 events. 386/632 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2302 event pairs, 386 based on Foata normal form. 0/517 useless extension candidates. Maximal degree in co-relation 1281. Up to 632 conditions per place. [2022-11-25 17:45:50,245 INFO L137 encePairwiseOnDemand]: 257/260 looper letters, 27 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2022-11-25 17:45:50,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 118 flow [2022-11-25 17:45:50,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:45:50,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:45:50,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2022-11-25 17:45:50,248 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2022-11-25 17:45:50,248 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2022-11-25 17:45:50,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2022-11-25 17:45:50,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:50,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2022-11-25 17:45:50,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:50,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:50,253 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:50,253 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 66 flow. Second operand 3 states and 366 transitions. [2022-11-25 17:45:50,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 118 flow [2022-11-25 17:45:50,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 28 transitions, 118 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:45:50,255 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 64 flow [2022-11-25 17:45:50,255 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2022-11-25 17:45:50,256 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -8 predicate places. [2022-11-25 17:45:50,256 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 64 flow [2022-11-25 17:45:50,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:50,257 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:50,257 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:45:50,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:45:50,258 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:45:50,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:50,258 INFO L85 PathProgramCache]: Analyzing trace with hash 530173, now seen corresponding path program 1 times [2022-11-25 17:45:50,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:50,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836292648] [2022-11-25 17:45:50,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:50,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:50,382 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 17:45:50,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:50,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836292648] [2022-11-25 17:45:50,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836292648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:50,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:50,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:45:50,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804407461] [2022-11-25 17:45:50,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:50,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:45:50,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:50,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:45:50,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:45:50,450 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 260 [2022-11-25 17:45:50,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:50,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:50,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 260 [2022-11-25 17:45:50,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:50,579 INFO L130 PetriNetUnfolder]: 371/604 cut-off events. [2022-11-25 17:45:50,579 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 17:45:50,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1230 conditions, 604 events. 371/604 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2171 event pairs, 371 based on Foata normal form. 0/502 useless extension candidates. Maximal degree in co-relation 1226. Up to 604 conditions per place. [2022-11-25 17:45:50,587 INFO L137 encePairwiseOnDemand]: 257/260 looper letters, 25 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2022-11-25 17:45:50,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 26 transitions, 112 flow [2022-11-25 17:45:50,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:45:50,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:45:50,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2022-11-25 17:45:50,589 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44743589743589746 [2022-11-25 17:45:50,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2022-11-25 17:45:50,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2022-11-25 17:45:50,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:50,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2022-11-25 17:45:50,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:50,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:50,596 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:50,596 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 64 flow. Second operand 3 states and 349 transitions. [2022-11-25 17:45:50,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 26 transitions, 112 flow [2022-11-25 17:45:50,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 111 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:45:50,598 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 61 flow [2022-11-25 17:45:50,598 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2022-11-25 17:45:50,600 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -9 predicate places. [2022-11-25 17:45:50,600 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 61 flow [2022-11-25 17:45:50,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:50,601 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:50,601 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:45:50,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:45:50,602 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:45:50,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:50,602 INFO L85 PathProgramCache]: Analyzing trace with hash 509509535, now seen corresponding path program 1 times [2022-11-25 17:45:50,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:50,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728991848] [2022-11-25 17:45:50,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:50,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:50,755 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 17:45:50,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:50,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728991848] [2022-11-25 17:45:50,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728991848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:50,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:50,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:45:50,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494850065] [2022-11-25 17:45:50,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:50,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:45:50,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:50,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:45:50,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:45:50,811 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 260 [2022-11-25 17:45:50,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:50,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:50,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 260 [2022-11-25 17:45:50,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:50,913 INFO L130 PetriNetUnfolder]: 352/570 cut-off events. [2022-11-25 17:45:50,914 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 17:45:50,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1163 conditions, 570 events. 352/570 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2004 event pairs, 352 based on Foata normal form. 0/483 useless extension candidates. Maximal degree in co-relation 1159. Up to 570 conditions per place. [2022-11-25 17:45:50,917 INFO L137 encePairwiseOnDemand]: 257/260 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2022-11-25 17:45:50,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 24 transitions, 105 flow [2022-11-25 17:45:50,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:45:50,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:45:50,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2022-11-25 17:45:50,920 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4641025641025641 [2022-11-25 17:45:50,920 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2022-11-25 17:45:50,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2022-11-25 17:45:50,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:50,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2022-11-25 17:45:50,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:50,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:50,924 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:50,925 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 61 flow. Second operand 3 states and 362 transitions. [2022-11-25 17:45:50,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 24 transitions, 105 flow [2022-11-25 17:45:50,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 24 transitions, 104 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:45:50,926 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 58 flow [2022-11-25 17:45:50,926 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2022-11-25 17:45:50,927 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -10 predicate places. [2022-11-25 17:45:50,927 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 58 flow [2022-11-25 17:45:50,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:50,928 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:50,928 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:45:50,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:45:50,929 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:45:50,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:50,929 INFO L85 PathProgramCache]: Analyzing trace with hash 509509536, now seen corresponding path program 1 times [2022-11-25 17:45:50,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:50,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631930030] [2022-11-25 17:45:50,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:50,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:50,988 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 17:45:50,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:50,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631930030] [2022-11-25 17:45:50,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631930030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:50,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:50,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:45:50,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989326419] [2022-11-25 17:45:50,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:50,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:45:50,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:50,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:45:50,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:45:51,043 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 260 [2022-11-25 17:45:51,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:51,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:51,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 260 [2022-11-25 17:45:51,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:51,142 INFO L130 PetriNetUnfolder]: 333/536 cut-off events. [2022-11-25 17:45:51,143 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 17:45:51,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1096 conditions, 536 events. 333/536 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1866 event pairs, 333 based on Foata normal form. 0/464 useless extension candidates. Maximal degree in co-relation 1092. Up to 536 conditions per place. [2022-11-25 17:45:51,146 INFO L137 encePairwiseOnDemand]: 257/260 looper letters, 21 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2022-11-25 17:45:51,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 22 transitions, 98 flow [2022-11-25 17:45:51,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:45:51,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:45:51,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2022-11-25 17:45:51,149 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4423076923076923 [2022-11-25 17:45:51,149 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 345 transitions. [2022-11-25 17:45:51,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 345 transitions. [2022-11-25 17:45:51,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:51,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 345 transitions. [2022-11-25 17:45:51,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:51,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:51,154 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:51,154 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 58 flow. Second operand 3 states and 345 transitions. [2022-11-25 17:45:51,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 22 transitions, 98 flow [2022-11-25 17:45:51,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 22 transitions, 97 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:45:51,157 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 55 flow [2022-11-25 17:45:51,157 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=55, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2022-11-25 17:45:51,160 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2022-11-25 17:45:51,160 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 55 flow [2022-11-25 17:45:51,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:51,161 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:51,161 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:51,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:45:51,164 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:45:51,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:51,164 INFO L85 PathProgramCache]: Analyzing trace with hash 12405539, now seen corresponding path program 1 times [2022-11-25 17:45:51,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:51,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029056085] [2022-11-25 17:45:51,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:51,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:51,302 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 17:45:51,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:51,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029056085] [2022-11-25 17:45:51,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029056085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:51,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:51,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:45:51,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683012548] [2022-11-25 17:45:51,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:51,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:45:51,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:51,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:45:51,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:45:51,430 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 260 [2022-11-25 17:45:51,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 55 flow. Second operand has 5 states, 5 states have (on average 100.4) internal successors, (502), 5 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:51,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:51,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 260 [2022-11-25 17:45:51,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:51,526 INFO L130 PetriNetUnfolder]: 258/425 cut-off events. [2022-11-25 17:45:51,526 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 17:45:51,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 875 conditions, 425 events. 258/425 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1395 event pairs, 258 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 871. Up to 425 conditions per place. [2022-11-25 17:45:51,529 INFO L137 encePairwiseOnDemand]: 258/260 looper letters, 20 selfloop transitions, 1 changer transitions 0/21 dead transitions. [2022-11-25 17:45:51,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 21 transitions, 95 flow [2022-11-25 17:45:51,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:45:51,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:45:51,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2022-11-25 17:45:51,531 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40897435897435896 [2022-11-25 17:45:51,531 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 319 transitions. [2022-11-25 17:45:51,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 319 transitions. [2022-11-25 17:45:51,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:51,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 319 transitions. [2022-11-25 17:45:51,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:51,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:51,535 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:51,535 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 55 flow. Second operand 3 states and 319 transitions. [2022-11-25 17:45:51,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 21 transitions, 95 flow [2022-11-25 17:45:51,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 21 transitions, 94 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:45:51,537 INFO L231 Difference]: Finished difference. Result has 32 places, 21 transitions, 54 flow [2022-11-25 17:45:51,537 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=32, PETRI_TRANSITIONS=21} [2022-11-25 17:45:51,538 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2022-11-25 17:45:51,538 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 21 transitions, 54 flow [2022-11-25 17:45:51,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.4) internal successors, (502), 5 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:51,539 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:51,539 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:51,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:45:51,539 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:45:51,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:51,540 INFO L85 PathProgramCache]: Analyzing trace with hash 12405538, now seen corresponding path program 1 times [2022-11-25 17:45:51,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:51,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583335966] [2022-11-25 17:45:51,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:51,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:51,650 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 17:45:51,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:51,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583335966] [2022-11-25 17:45:51,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583335966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:51,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:51,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:45:51,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335108595] [2022-11-25 17:45:51,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:51,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:45:51,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:51,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:45:51,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:45:51,698 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 260 [2022-11-25 17:45:51,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:51,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:51,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 260 [2022-11-25 17:45:51,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:51,766 INFO L130 PetriNetUnfolder]: 183/314 cut-off events. [2022-11-25 17:45:51,766 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 17:45:51,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 314 events. 183/314 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 940 event pairs, 183 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 650. Up to 314 conditions per place. [2022-11-25 17:45:51,769 INFO L137 encePairwiseOnDemand]: 258/260 looper letters, 19 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2022-11-25 17:45:51,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 20 transitions, 92 flow [2022-11-25 17:45:51,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:45:51,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:45:51,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2022-11-25 17:45:51,771 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4576923076923077 [2022-11-25 17:45:51,771 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2022-11-25 17:45:51,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2022-11-25 17:45:51,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:51,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2022-11-25 17:45:51,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:51,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:51,775 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:51,775 INFO L175 Difference]: Start difference. First operand has 32 places, 21 transitions, 54 flow. Second operand 3 states and 357 transitions. [2022-11-25 17:45:51,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 20 transitions, 92 flow [2022-11-25 17:45:51,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 20 transitions, 91 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:45:51,777 INFO L231 Difference]: Finished difference. Result has 32 places, 20 transitions, 53 flow [2022-11-25 17:45:51,777 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2022-11-25 17:45:51,778 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2022-11-25 17:45:51,778 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 53 flow [2022-11-25 17:45:51,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:51,778 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:51,779 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:51,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:45:51,779 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:45:51,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:51,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1646531967, now seen corresponding path program 1 times [2022-11-25 17:45:51,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:51,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159127487] [2022-11-25 17:45:51,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:51,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:52,204 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 17:45:52,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:52,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159127487] [2022-11-25 17:45:52,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159127487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:52,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:52,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:45:52,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950967357] [2022-11-25 17:45:52,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:52,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:45:52,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:52,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:45:52,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:45:52,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 260 [2022-11-25 17:45:52,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 53 flow. Second operand has 6 states, 6 states have (on average 112.33333333333333) internal successors, (674), 6 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:52,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:52,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 260 [2022-11-25 17:45:52,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:52,434 INFO L130 PetriNetUnfolder]: 213/385 cut-off events. [2022-11-25 17:45:52,434 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-25 17:45:52,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 799 conditions, 385 events. 213/385 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1388 event pairs, 63 based on Foata normal form. 1/386 useless extension candidates. Maximal degree in co-relation 795. Up to 136 conditions per place. [2022-11-25 17:45:52,436 INFO L137 encePairwiseOnDemand]: 254/260 looper letters, 41 selfloop transitions, 9 changer transitions 11/61 dead transitions. [2022-11-25 17:45:52,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 61 transitions, 266 flow [2022-11-25 17:45:52,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:45:52,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:45:52,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 716 transitions. [2022-11-25 17:45:52,440 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45897435897435895 [2022-11-25 17:45:52,440 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 716 transitions. [2022-11-25 17:45:52,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 716 transitions. [2022-11-25 17:45:52,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:52,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 716 transitions. [2022-11-25 17:45:52,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:52,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:52,446 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:52,447 INFO L175 Difference]: Start difference. First operand has 32 places, 20 transitions, 53 flow. Second operand 6 states and 716 transitions. [2022-11-25 17:45:52,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 61 transitions, 266 flow [2022-11-25 17:45:52,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 61 transitions, 265 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:45:52,452 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 103 flow [2022-11-25 17:45:52,452 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=103, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2022-11-25 17:45:52,454 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -4 predicate places. [2022-11-25 17:45:52,454 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 103 flow [2022-11-25 17:45:52,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.33333333333333) internal successors, (674), 6 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:52,455 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:52,455 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:52,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:45:52,456 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:45:52,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:52,456 INFO L85 PathProgramCache]: Analyzing trace with hash 2001987429, now seen corresponding path program 2 times [2022-11-25 17:45:52,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:52,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747025054] [2022-11-25 17:45:52,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:52,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:52,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:52,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:52,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747025054] [2022-11-25 17:45:52,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747025054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:52,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:52,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:45:52,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998651762] [2022-11-25 17:45:52,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:52,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:45:52,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:52,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:45:52,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:45:52,773 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 260 [2022-11-25 17:45:52,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 103 flow. Second operand has 6 states, 6 states have (on average 113.33333333333333) internal successors, (680), 6 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:52,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:52,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 260 [2022-11-25 17:45:52,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:52,931 INFO L130 PetriNetUnfolder]: 149/280 cut-off events. [2022-11-25 17:45:52,932 INFO L131 PetriNetUnfolder]: For 141/141 co-relation queries the response was YES. [2022-11-25 17:45:52,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 732 conditions, 280 events. 149/280 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 978 event pairs, 30 based on Foata normal form. 12/292 useless extension candidates. Maximal degree in co-relation 725. Up to 214 conditions per place. [2022-11-25 17:45:52,934 INFO L137 encePairwiseOnDemand]: 254/260 looper letters, 41 selfloop transitions, 9 changer transitions 0/50 dead transitions. [2022-11-25 17:45:52,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 50 transitions, 271 flow [2022-11-25 17:45:52,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:45:52,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:45:52,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 592 transitions. [2022-11-25 17:45:52,937 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4553846153846154 [2022-11-25 17:45:52,937 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 592 transitions. [2022-11-25 17:45:52,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 592 transitions. [2022-11-25 17:45:52,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:52,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 592 transitions. [2022-11-25 17:45:52,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:52,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:52,942 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:52,942 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 103 flow. Second operand 5 states and 592 transitions. [2022-11-25 17:45:52,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 50 transitions, 271 flow [2022-11-25 17:45:52,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 50 transitions, 264 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 17:45:52,945 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 163 flow [2022-11-25 17:45:52,945 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=163, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2022-11-25 17:45:52,946 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2022-11-25 17:45:52,946 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 163 flow [2022-11-25 17:45:52,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.33333333333333) internal successors, (680), 6 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:52,947 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:52,947 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:52,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:45:52,948 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:45:52,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:52,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1607115815, now seen corresponding path program 3 times [2022-11-25 17:45:52,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:52,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242237014] [2022-11-25 17:45:52,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:52,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:53,208 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 17:45:53,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:53,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242237014] [2022-11-25 17:45:53,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242237014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:53,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:53,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:45:53,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267840295] [2022-11-25 17:45:53,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:53,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:45:53,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:53,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:45:53,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:45:53,235 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 260 [2022-11-25 17:45:53,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 163 flow. Second operand has 6 states, 6 states have (on average 112.33333333333333) internal successors, (674), 6 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:53,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:53,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 260 [2022-11-25 17:45:53,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:53,400 INFO L130 PetriNetUnfolder]: 148/285 cut-off events. [2022-11-25 17:45:53,400 INFO L131 PetriNetUnfolder]: For 235/235 co-relation queries the response was YES. [2022-11-25 17:45:53,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 870 conditions, 285 events. 148/285 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1019 event pairs, 10 based on Foata normal form. 14/299 useless extension candidates. Maximal degree in co-relation 861. Up to 163 conditions per place. [2022-11-25 17:45:53,403 INFO L137 encePairwiseOnDemand]: 254/260 looper letters, 33 selfloop transitions, 10 changer transitions 12/55 dead transitions. [2022-11-25 17:45:53,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 55 transitions, 328 flow [2022-11-25 17:45:53,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:45:53,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:45:53,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 815 transitions. [2022-11-25 17:45:53,406 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4478021978021978 [2022-11-25 17:45:53,406 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 815 transitions. [2022-11-25 17:45:53,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 815 transitions. [2022-11-25 17:45:53,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:53,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 815 transitions. [2022-11-25 17:45:53,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 116.42857142857143) internal successors, (815), 7 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:53,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:53,413 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:53,413 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 163 flow. Second operand 7 states and 815 transitions. [2022-11-25 17:45:53,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 55 transitions, 328 flow [2022-11-25 17:45:53,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 55 transitions, 328 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:45:53,416 INFO L231 Difference]: Finished difference. Result has 52 places, 32 transitions, 173 flow [2022-11-25 17:45:53,417 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=173, PETRI_PLACES=52, PETRI_TRANSITIONS=32} [2022-11-25 17:45:53,417 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2022-11-25 17:45:53,417 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 32 transitions, 173 flow [2022-11-25 17:45:53,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.33333333333333) internal successors, (674), 6 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:53,418 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:53,418 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:53,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:45:53,419 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:45:53,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:53,419 INFO L85 PathProgramCache]: Analyzing trace with hash -712280299, now seen corresponding path program 4 times [2022-11-25 17:45:53,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:53,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063241066] [2022-11-25 17:45:53,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:53,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:53,754 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 17:45:53,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:53,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063241066] [2022-11-25 17:45:53,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063241066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:53,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:53,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:45:53,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419368641] [2022-11-25 17:45:53,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:53,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:45:53,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:53,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:45:53,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:45:53,791 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 260 [2022-11-25 17:45:53,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 32 transitions, 173 flow. Second operand has 7 states, 7 states have (on average 111.85714285714286) internal successors, (783), 7 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:53,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:53,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 260 [2022-11-25 17:45:53,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:53,984 INFO L130 PetriNetUnfolder]: 129/260 cut-off events. [2022-11-25 17:45:53,984 INFO L131 PetriNetUnfolder]: For 344/344 co-relation queries the response was YES. [2022-11-25 17:45:53,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 260 events. 129/260 cut-off events. For 344/344 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 961 event pairs, 16 based on Foata normal form. 4/264 useless extension candidates. Maximal degree in co-relation 910. Up to 152 conditions per place. [2022-11-25 17:45:53,987 INFO L137 encePairwiseOnDemand]: 253/260 looper letters, 42 selfloop transitions, 19 changer transitions 2/63 dead transitions. [2022-11-25 17:45:53,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 63 transitions, 431 flow [2022-11-25 17:45:53,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:45:53,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:45:53,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 927 transitions. [2022-11-25 17:45:53,991 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44567307692307695 [2022-11-25 17:45:53,991 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 927 transitions. [2022-11-25 17:45:53,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 927 transitions. [2022-11-25 17:45:53,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:53,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 927 transitions. [2022-11-25 17:45:53,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 115.875) internal successors, (927), 8 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:53,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:54,000 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:54,000 INFO L175 Difference]: Start difference. First operand has 52 places, 32 transitions, 173 flow. Second operand 8 states and 927 transitions. [2022-11-25 17:45:54,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 63 transitions, 431 flow [2022-11-25 17:45:54,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 63 transitions, 400 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-11-25 17:45:54,006 INFO L231 Difference]: Finished difference. Result has 54 places, 41 transitions, 274 flow [2022-11-25 17:45:54,006 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=274, PETRI_PLACES=54, PETRI_TRANSITIONS=41} [2022-11-25 17:45:54,007 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2022-11-25 17:45:54,007 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 41 transitions, 274 flow [2022-11-25 17:45:54,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 111.85714285714286) internal successors, (783), 7 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:54,008 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:54,008 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:54,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:45:54,008 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:45:54,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:54,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1883269407, now seen corresponding path program 5 times [2022-11-25 17:45:54,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:54,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453745356] [2022-11-25 17:45:54,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:54,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:54,240 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 17:45:54,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:54,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453745356] [2022-11-25 17:45:54,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453745356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:54,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:54,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:45:54,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133289041] [2022-11-25 17:45:54,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:54,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:45:54,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:54,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:45:54,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:45:54,261 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 260 [2022-11-25 17:45:54,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 274 flow. Second operand has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:54,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:54,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 260 [2022-11-25 17:45:54,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:54,376 INFO L130 PetriNetUnfolder]: 63/136 cut-off events. [2022-11-25 17:45:54,377 INFO L131 PetriNetUnfolder]: For 234/234 co-relation queries the response was YES. [2022-11-25 17:45:54,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 136 events. 63/136 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 418 event pairs, 4 based on Foata normal form. 10/146 useless extension candidates. Maximal degree in co-relation 525. Up to 94 conditions per place. [2022-11-25 17:45:54,378 INFO L137 encePairwiseOnDemand]: 253/260 looper letters, 33 selfloop transitions, 12 changer transitions 0/45 dead transitions. [2022-11-25 17:45:54,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 45 transitions, 334 flow [2022-11-25 17:45:54,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:45:54,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:45:54,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 601 transitions. [2022-11-25 17:45:54,381 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4623076923076923 [2022-11-25 17:45:54,381 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 601 transitions. [2022-11-25 17:45:54,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 601 transitions. [2022-11-25 17:45:54,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:54,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 601 transitions. [2022-11-25 17:45:54,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.2) internal successors, (601), 5 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:54,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:54,386 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:54,386 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 274 flow. Second operand 5 states and 601 transitions. [2022-11-25 17:45:54,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 45 transitions, 334 flow [2022-11-25 17:45:54,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 45 transitions, 291 flow, removed 6 selfloop flow, removed 8 redundant places. [2022-11-25 17:45:54,389 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 206 flow [2022-11-25 17:45:54,390 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2022-11-25 17:45:54,390 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2022-11-25 17:45:54,391 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 206 flow [2022-11-25 17:45:54,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:54,391 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:54,391 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:54,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:45:54,392 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:45:54,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:54,392 INFO L85 PathProgramCache]: Analyzing trace with hash -309196301, now seen corresponding path program 6 times [2022-11-25 17:45:54,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:54,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571832237] [2022-11-25 17:45:54,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:54,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:54,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:54,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:54,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:54,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571832237] [2022-11-25 17:45:54,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571832237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:54,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:54,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:45:54,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949749713] [2022-11-25 17:45:54,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:54,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:45:54,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:54,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:45:54,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:45:54,708 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 260 [2022-11-25 17:45:54,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 206 flow. Second operand has 7 states, 7 states have (on average 112.85714285714286) internal successors, (790), 7 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:54,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:54,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 260 [2022-11-25 17:45:54,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:54,861 INFO L130 PetriNetUnfolder]: 64/143 cut-off events. [2022-11-25 17:45:54,862 INFO L131 PetriNetUnfolder]: For 238/238 co-relation queries the response was YES. [2022-11-25 17:45:54,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 143 events. 64/143 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 473 event pairs, 12 based on Foata normal form. 2/145 useless extension candidates. Maximal degree in co-relation 560. Up to 108 conditions per place. [2022-11-25 17:45:54,863 INFO L137 encePairwiseOnDemand]: 254/260 looper letters, 33 selfloop transitions, 7 changer transitions 9/49 dead transitions. [2022-11-25 17:45:54,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 49 transitions, 352 flow [2022-11-25 17:45:54,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:45:54,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:45:54,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 923 transitions. [2022-11-25 17:45:54,867 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44375 [2022-11-25 17:45:54,867 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 923 transitions. [2022-11-25 17:45:54,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 923 transitions. [2022-11-25 17:45:54,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:54,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 923 transitions. [2022-11-25 17:45:54,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 115.375) internal successors, (923), 8 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:54,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:54,874 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:54,874 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 206 flow. Second operand 8 states and 923 transitions. [2022-11-25 17:45:54,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 49 transitions, 352 flow [2022-11-25 17:45:54,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 334 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-25 17:45:54,877 INFO L231 Difference]: Finished difference. Result has 55 places, 32 transitions, 193 flow [2022-11-25 17:45:54,878 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=193, PETRI_PLACES=55, PETRI_TRANSITIONS=32} [2022-11-25 17:45:54,878 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2022-11-25 17:45:54,878 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 32 transitions, 193 flow [2022-11-25 17:45:54,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.85714285714286) internal successors, (790), 7 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:54,879 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:54,879 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:54,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 17:45:54,880 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:45:54,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:54,880 INFO L85 PathProgramCache]: Analyzing trace with hash 564046673, now seen corresponding path program 7 times [2022-11-25 17:45:54,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:54,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503171917] [2022-11-25 17:45:54,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:54,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:55,092 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 17:45:55,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:55,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503171917] [2022-11-25 17:45:55,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503171917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:55,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:55,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:45:55,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385397197] [2022-11-25 17:45:55,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:55,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:45:55,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:55,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:45:55,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:45:55,117 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 260 [2022-11-25 17:45:55,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 32 transitions, 193 flow. Second operand has 7 states, 7 states have (on average 111.85714285714286) internal successors, (783), 7 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:55,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:55,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 260 [2022-11-25 17:45:55,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:55,258 INFO L130 PetriNetUnfolder]: 71/166 cut-off events. [2022-11-25 17:45:55,258 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2022-11-25 17:45:55,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606 conditions, 166 events. 71/166 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 625 event pairs, 6 based on Foata normal form. 2/168 useless extension candidates. Maximal degree in co-relation 593. Up to 70 conditions per place. [2022-11-25 17:45:55,260 INFO L137 encePairwiseOnDemand]: 253/260 looper letters, 28 selfloop transitions, 21 changer transitions 5/54 dead transitions. [2022-11-25 17:45:55,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 383 flow [2022-11-25 17:45:55,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:45:55,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:45:55,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 919 transitions. [2022-11-25 17:45:55,264 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44182692307692306 [2022-11-25 17:45:55,265 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 919 transitions. [2022-11-25 17:45:55,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 919 transitions. [2022-11-25 17:45:55,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:55,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 919 transitions. [2022-11-25 17:45:55,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 114.875) internal successors, (919), 8 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:55,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:55,272 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:55,272 INFO L175 Difference]: Start difference. First operand has 55 places, 32 transitions, 193 flow. Second operand 8 states and 919 transitions. [2022-11-25 17:45:55,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 383 flow [2022-11-25 17:45:55,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 54 transitions, 365 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-25 17:45:55,275 INFO L231 Difference]: Finished difference. Result has 54 places, 38 transitions, 272 flow [2022-11-25 17:45:55,275 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=272, PETRI_PLACES=54, PETRI_TRANSITIONS=38} [2022-11-25 17:45:55,276 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2022-11-25 17:45:55,276 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 38 transitions, 272 flow [2022-11-25 17:45:55,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 111.85714285714286) internal successors, (783), 7 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:55,277 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:55,277 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:55,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 17:45:55,277 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:45:55,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:55,278 INFO L85 PathProgramCache]: Analyzing trace with hash -931360141, now seen corresponding path program 8 times [2022-11-25 17:45:55,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:55,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445828760] [2022-11-25 17:45:55,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:55,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:55,493 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 17:45:55,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:55,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445828760] [2022-11-25 17:45:55,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445828760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:55,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:55,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:45:55,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920987117] [2022-11-25 17:45:55,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:55,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:45:55,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:55,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:45:55,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:45:55,538 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 260 [2022-11-25 17:45:55,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 38 transitions, 272 flow. Second operand has 7 states, 7 states have (on average 113.85714285714286) internal successors, (797), 7 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:55,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:55,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 260 [2022-11-25 17:45:55,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:55,684 INFO L130 PetriNetUnfolder]: 65/160 cut-off events. [2022-11-25 17:45:55,685 INFO L131 PetriNetUnfolder]: For 346/346 co-relation queries the response was YES. [2022-11-25 17:45:55,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 160 events. 65/160 cut-off events. For 346/346 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 612 event pairs, 0 based on Foata normal form. 4/164 useless extension candidates. Maximal degree in co-relation 655. Up to 52 conditions per place. [2022-11-25 17:45:55,686 INFO L137 encePairwiseOnDemand]: 252/260 looper letters, 26 selfloop transitions, 19 changer transitions 8/53 dead transitions. [2022-11-25 17:45:55,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 53 transitions, 422 flow [2022-11-25 17:45:55,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:45:55,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:45:55,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 937 transitions. [2022-11-25 17:45:55,690 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45048076923076924 [2022-11-25 17:45:55,690 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 937 transitions. [2022-11-25 17:45:55,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 937 transitions. [2022-11-25 17:45:55,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:55,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 937 transitions. [2022-11-25 17:45:55,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 117.125) internal successors, (937), 8 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:55,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:55,698 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:55,698 INFO L175 Difference]: Start difference. First operand has 54 places, 38 transitions, 272 flow. Second operand 8 states and 937 transitions. [2022-11-25 17:45:55,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 53 transitions, 422 flow [2022-11-25 17:45:55,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 390 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-11-25 17:45:55,703 INFO L231 Difference]: Finished difference. Result has 56 places, 35 transitions, 257 flow [2022-11-25 17:45:55,703 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=257, PETRI_PLACES=56, PETRI_TRANSITIONS=35} [2022-11-25 17:45:55,703 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2022-11-25 17:45:55,704 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 35 transitions, 257 flow [2022-11-25 17:45:55,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 113.85714285714286) internal successors, (797), 7 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:55,704 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:55,705 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:55,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 17:45:55,705 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:45:55,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:55,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1355919421, now seen corresponding path program 9 times [2022-11-25 17:45:55,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:55,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190603381] [2022-11-25 17:45:55,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:55,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:55,942 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 17:45:55,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:55,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190603381] [2022-11-25 17:45:55,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190603381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:55,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:55,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:45:55,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287760875] [2022-11-25 17:45:55,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:55,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:45:55,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:55,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:45:55,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:45:55,982 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 260 [2022-11-25 17:45:55,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 35 transitions, 257 flow. Second operand has 7 states, 7 states have (on average 112.85714285714286) internal successors, (790), 7 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:55,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:55,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 260 [2022-11-25 17:45:55,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:56,150 INFO L130 PetriNetUnfolder]: 50/125 cut-off events. [2022-11-25 17:45:56,150 INFO L131 PetriNetUnfolder]: For 368/368 co-relation queries the response was YES. [2022-11-25 17:45:56,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 125 events. 50/125 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 403 event pairs, 0 based on Foata normal form. 2/127 useless extension candidates. Maximal degree in co-relation 532. Up to 80 conditions per place. [2022-11-25 17:45:56,152 INFO L137 encePairwiseOnDemand]: 253/260 looper letters, 33 selfloop transitions, 12 changer transitions 2/47 dead transitions. [2022-11-25 17:45:56,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 47 transitions, 392 flow [2022-11-25 17:45:56,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:45:56,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:45:56,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 922 transitions. [2022-11-25 17:45:56,157 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44326923076923075 [2022-11-25 17:45:56,157 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 922 transitions. [2022-11-25 17:45:56,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 922 transitions. [2022-11-25 17:45:56,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:56,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 922 transitions. [2022-11-25 17:45:56,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 115.25) internal successors, (922), 8 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:56,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:56,165 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:56,165 INFO L175 Difference]: Start difference. First operand has 56 places, 35 transitions, 257 flow. Second operand 8 states and 922 transitions. [2022-11-25 17:45:56,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 47 transitions, 392 flow [2022-11-25 17:45:56,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 47 transitions, 343 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-11-25 17:45:56,169 INFO L231 Difference]: Finished difference. Result has 56 places, 34 transitions, 238 flow [2022-11-25 17:45:56,169 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=238, PETRI_PLACES=56, PETRI_TRANSITIONS=34} [2022-11-25 17:45:56,169 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2022-11-25 17:45:56,170 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 34 transitions, 238 flow [2022-11-25 17:45:56,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.85714285714286) internal successors, (790), 7 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:56,170 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:56,171 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:56,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 17:45:56,171 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:45:56,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:56,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1040557063, now seen corresponding path program 10 times [2022-11-25 17:45:56,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:56,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333883437] [2022-11-25 17:45:56,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:56,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:56,389 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 17:45:56,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:56,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333883437] [2022-11-25 17:45:56,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333883437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:56,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:56,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:45:56,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514113278] [2022-11-25 17:45:56,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:56,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:45:56,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:56,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:45:56,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:45:56,422 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 260 [2022-11-25 17:45:56,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 34 transitions, 238 flow. Second operand has 7 states, 7 states have (on average 113.85714285714286) internal successors, (797), 7 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:56,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:56,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 260 [2022-11-25 17:45:56,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:56,588 INFO L130 PetriNetUnfolder]: 46/121 cut-off events. [2022-11-25 17:45:56,588 INFO L131 PetriNetUnfolder]: For 367/367 co-relation queries the response was YES. [2022-11-25 17:45:56,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 121 events. 46/121 cut-off events. For 367/367 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 394 event pairs, 2 based on Foata normal form. 6/127 useless extension candidates. Maximal degree in co-relation 516. Up to 78 conditions per place. [2022-11-25 17:45:56,590 INFO L137 encePairwiseOnDemand]: 253/260 looper letters, 27 selfloop transitions, 9 changer transitions 11/47 dead transitions. [2022-11-25 17:45:56,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 47 transitions, 403 flow [2022-11-25 17:45:56,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:45:56,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:45:56,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 930 transitions. [2022-11-25 17:45:56,594 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44711538461538464 [2022-11-25 17:45:56,594 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 930 transitions. [2022-11-25 17:45:56,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 930 transitions. [2022-11-25 17:45:56,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:56,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 930 transitions. [2022-11-25 17:45:56,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 116.25) internal successors, (930), 8 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:56,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:56,602 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:56,603 INFO L175 Difference]: Start difference. First operand has 56 places, 34 transitions, 238 flow. Second operand 8 states and 930 transitions. [2022-11-25 17:45:56,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 47 transitions, 403 flow [2022-11-25 17:45:56,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 330 flow, removed 8 selfloop flow, removed 10 redundant places. [2022-11-25 17:45:56,606 INFO L231 Difference]: Finished difference. Result has 55 places, 31 transitions, 193 flow [2022-11-25 17:45:56,607 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=193, PETRI_PLACES=55, PETRI_TRANSITIONS=31} [2022-11-25 17:45:56,607 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2022-11-25 17:45:56,607 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 31 transitions, 193 flow [2022-11-25 17:45:56,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 113.85714285714286) internal successors, (797), 7 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:56,608 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:56,608 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:56,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 17:45:56,609 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:45:56,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:56,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1502889203, now seen corresponding path program 11 times [2022-11-25 17:45:56,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:56,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043857996] [2022-11-25 17:45:56,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:56,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:56,824 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 17:45:56,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:56,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043857996] [2022-11-25 17:45:56,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043857996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:56,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:56,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:45:56,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62926618] [2022-11-25 17:45:56,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:56,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:45:56,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:56,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:45:56,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:45:56,854 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 260 [2022-11-25 17:45:56,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 31 transitions, 193 flow. Second operand has 7 states, 7 states have (on average 111.85714285714286) internal successors, (783), 7 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:56,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:56,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 260 [2022-11-25 17:45:56,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:56,972 INFO L130 PetriNetUnfolder]: 25/72 cut-off events. [2022-11-25 17:45:56,972 INFO L131 PetriNetUnfolder]: For 172/172 co-relation queries the response was YES. [2022-11-25 17:45:56,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 72 events. 25/72 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 160 event pairs, 2 based on Foata normal form. 6/78 useless extension candidates. Maximal degree in co-relation 287. Up to 48 conditions per place. [2022-11-25 17:45:56,973 INFO L137 encePairwiseOnDemand]: 254/260 looper letters, 22 selfloop transitions, 7 changer transitions 5/34 dead transitions. [2022-11-25 17:45:56,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 34 transitions, 256 flow [2022-11-25 17:45:56,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:45:56,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:45:56,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 908 transitions. [2022-11-25 17:45:56,977 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43653846153846154 [2022-11-25 17:45:56,978 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 908 transitions. [2022-11-25 17:45:56,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 908 transitions. [2022-11-25 17:45:56,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:56,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 908 transitions. [2022-11-25 17:45:56,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 113.5) internal successors, (908), 8 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:56,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:56,986 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:56,986 INFO L175 Difference]: Start difference. First operand has 55 places, 31 transitions, 193 flow. Second operand 8 states and 908 transitions. [2022-11-25 17:45:56,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 34 transitions, 256 flow [2022-11-25 17:45:56,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 34 transitions, 200 flow, removed 7 selfloop flow, removed 11 redundant places. [2022-11-25 17:45:56,988 INFO L231 Difference]: Finished difference. Result has 47 places, 25 transitions, 119 flow [2022-11-25 17:45:56,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=119, PETRI_PLACES=47, PETRI_TRANSITIONS=25} [2022-11-25 17:45:56,989 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2022-11-25 17:45:56,990 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 25 transitions, 119 flow [2022-11-25 17:45:56,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 111.85714285714286) internal successors, (783), 7 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:56,991 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:56,991 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:56,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 17:45:56,992 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:45:56,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:56,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1064491387, now seen corresponding path program 12 times [2022-11-25 17:45:56,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:56,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064907790] [2022-11-25 17:45:56,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:56,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:57,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:57,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:57,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064907790] [2022-11-25 17:45:57,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064907790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:57,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:57,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:45:57,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495327179] [2022-11-25 17:45:57,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:57,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:45:57,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:57,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:45:57,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:45:57,239 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 260 [2022-11-25 17:45:57,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 25 transitions, 119 flow. Second operand has 7 states, 7 states have (on average 112.85714285714286) internal successors, (790), 7 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:57,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:57,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 260 [2022-11-25 17:45:57,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:57,357 INFO L130 PetriNetUnfolder]: 22/67 cut-off events. [2022-11-25 17:45:57,358 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2022-11-25 17:45:57,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 67 events. 22/67 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 141 event pairs, 0 based on Foata normal form. 2/69 useless extension candidates. Maximal degree in co-relation 228. Up to 19 conditions per place. [2022-11-25 17:45:57,359 INFO L137 encePairwiseOnDemand]: 253/260 looper letters, 20 selfloop transitions, 9 changer transitions 4/33 dead transitions. [2022-11-25 17:45:57,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 33 transitions, 207 flow [2022-11-25 17:45:57,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:45:57,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:45:57,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 913 transitions. [2022-11-25 17:45:57,362 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4389423076923077 [2022-11-25 17:45:57,362 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 913 transitions. [2022-11-25 17:45:57,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 913 transitions. [2022-11-25 17:45:57,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:57,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 913 transitions. [2022-11-25 17:45:57,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 114.125) internal successors, (913), 8 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:57,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:57,370 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:57,370 INFO L175 Difference]: Start difference. First operand has 47 places, 25 transitions, 119 flow. Second operand 8 states and 913 transitions. [2022-11-25 17:45:57,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 33 transitions, 207 flow [2022-11-25 17:45:57,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 33 transitions, 191 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-25 17:45:57,372 INFO L231 Difference]: Finished difference. Result has 47 places, 23 transitions, 106 flow [2022-11-25 17:45:57,372 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=106, PETRI_PLACES=47, PETRI_TRANSITIONS=23} [2022-11-25 17:45:57,373 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2022-11-25 17:45:57,373 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 23 transitions, 106 flow [2022-11-25 17:45:57,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.85714285714286) internal successors, (790), 7 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:57,374 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:57,374 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:57,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 17:45:57,374 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:45:57,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:57,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1146145043, now seen corresponding path program 13 times [2022-11-25 17:45:57,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:57,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684103820] [2022-11-25 17:45:57,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:57,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:57,624 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 17:45:57,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:57,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684103820] [2022-11-25 17:45:57,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684103820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:57,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:57,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:45:57,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954772653] [2022-11-25 17:45:57,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:57,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:45:57,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:57,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:45:57,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:45:57,653 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 260 [2022-11-25 17:45:57,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 23 transitions, 106 flow. Second operand has 7 states, 7 states have (on average 111.85714285714286) internal successors, (783), 7 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:57,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:57,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 260 [2022-11-25 17:45:57,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:57,754 INFO L130 PetriNetUnfolder]: 14/51 cut-off events. [2022-11-25 17:45:57,754 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-11-25 17:45:57,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 51 events. 14/51 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 81 event pairs, 0 based on Foata normal form. 2/53 useless extension candidates. Maximal degree in co-relation 170. Up to 15 conditions per place. [2022-11-25 17:45:57,755 INFO L137 encePairwiseOnDemand]: 254/260 looper letters, 19 selfloop transitions, 5 changer transitions 6/30 dead transitions. [2022-11-25 17:45:57,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 30 transitions, 183 flow [2022-11-25 17:45:57,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:45:57,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:45:57,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 903 transitions. [2022-11-25 17:45:57,758 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4341346153846154 [2022-11-25 17:45:57,758 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 903 transitions. [2022-11-25 17:45:57,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 903 transitions. [2022-11-25 17:45:57,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:57,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 903 transitions. [2022-11-25 17:45:57,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 112.875) internal successors, (903), 8 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:57,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:57,765 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:57,765 INFO L175 Difference]: Start difference. First operand has 47 places, 23 transitions, 106 flow. Second operand 8 states and 903 transitions. [2022-11-25 17:45:57,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 30 transitions, 183 flow [2022-11-25 17:45:57,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 30 transitions, 149 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-25 17:45:57,767 INFO L231 Difference]: Finished difference. Result has 42 places, 20 transitions, 72 flow [2022-11-25 17:45:57,767 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=72, PETRI_PLACES=42, PETRI_TRANSITIONS=20} [2022-11-25 17:45:57,768 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2022-11-25 17:45:57,768 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 20 transitions, 72 flow [2022-11-25 17:45:57,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 111.85714285714286) internal successors, (783), 7 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:57,768 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:57,769 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:57,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 17:45:57,769 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:45:57,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:57,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1133028525, now seen corresponding path program 14 times [2022-11-25 17:45:57,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:57,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119610968] [2022-11-25 17:45:57,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:57,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:57,988 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 17:45:57,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:57,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119610968] [2022-11-25 17:45:57,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119610968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:57,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:57,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:45:57,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553168591] [2022-11-25 17:45:57,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:57,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:45:57,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:57,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:45:57,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:45:58,025 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 260 [2022-11-25 17:45:58,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 20 transitions, 72 flow. Second operand has 7 states, 7 states have (on average 112.85714285714286) internal successors, (790), 7 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:58,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:58,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 260 [2022-11-25 17:45:58,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:58,077 INFO L130 PetriNetUnfolder]: 4/19 cut-off events. [2022-11-25 17:45:58,077 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:45:58,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 19 events. 4/19 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 12 event pairs, 0 based on Foata normal form. 2/21 useless extension candidates. Maximal degree in co-relation 58. Up to 7 conditions per place. [2022-11-25 17:45:58,078 INFO L137 encePairwiseOnDemand]: 254/260 looper letters, 0 selfloop transitions, 0 changer transitions 15/15 dead transitions. [2022-11-25 17:45:58,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 15 transitions, 81 flow [2022-11-25 17:45:58,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:45:58,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:45:58,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 786 transitions. [2022-11-25 17:45:58,080 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4318681318681319 [2022-11-25 17:45:58,080 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 786 transitions. [2022-11-25 17:45:58,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 786 transitions. [2022-11-25 17:45:58,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:58,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 786 transitions. [2022-11-25 17:45:58,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 112.28571428571429) internal successors, (786), 7 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:58,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:58,087 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:58,088 INFO L175 Difference]: Start difference. First operand has 42 places, 20 transitions, 72 flow. Second operand 7 states and 786 transitions. [2022-11-25 17:45:58,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 15 transitions, 81 flow [2022-11-25 17:45:58,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 15 transitions, 70 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-25 17:45:58,089 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2022-11-25 17:45:58,089 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2022-11-25 17:45:58,089 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -13 predicate places. [2022-11-25 17:45:58,090 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2022-11-25 17:45:58,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.85714285714286) internal successors, (790), 7 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:58,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2022-11-25 17:45:58,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2022-11-25 17:45:58,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2022-11-25 17:45:58,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2022-11-25 17:45:58,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2022-11-25 17:45:58,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2022-11-25 17:45:58,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2022-11-25 17:45:58,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2022-11-25 17:45:58,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2022-11-25 17:45:58,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2022-11-25 17:45:58,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2022-11-25 17:45:58,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2022-11-25 17:45:58,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2022-11-25 17:45:58,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2022-11-25 17:45:58,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2022-11-25 17:45:58,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2022-11-25 17:45:58,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2022-11-25 17:45:58,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-25 17:45:58,097 INFO L445 BasicCegarLoop]: Path program histogram: [14, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:58,103 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 17:45:58,103 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:45:58,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:45:58 BasicIcfg [2022-11-25 17:45:58,109 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:45:58,109 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:45:58,109 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:45:58,109 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:45:58,110 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:45:41" (3/4) ... [2022-11-25 17:45:58,113 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 17:45:58,119 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-25 17:45:58,119 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-25 17:45:58,120 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-25 17:45:58,127 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2022-11-25 17:45:58,127 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 17:45:58,128 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-25 17:45:58,128 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 17:45:58,165 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaf068e-aee5-405b-9816-6738cb17a561/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:45:58,165 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:45:58,166 INFO L158 Benchmark]: Toolchain (without parser) took 18325.55ms. Allocated memory was 157.3MB in the beginning and 337.6MB in the end (delta: 180.4MB). Free memory was 118.0MB in the beginning and 167.2MB in the end (delta: -49.2MB). Peak memory consumption was 133.2MB. Max. memory is 16.1GB. [2022-11-25 17:45:58,166 INFO L158 Benchmark]: CDTParser took 0.73ms. Allocated memory is still 157.3MB. Free memory was 127.2MB in the beginning and 127.1MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:45:58,167 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.91ms. Allocated memory is still 157.3MB. Free memory was 117.5MB in the beginning and 103.5MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 17:45:58,167 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.70ms. Allocated memory is still 157.3MB. Free memory was 103.5MB in the beginning and 101.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:45:58,168 INFO L158 Benchmark]: Boogie Preprocessor took 44.33ms. Allocated memory is still 157.3MB. Free memory was 101.2MB in the beginning and 100.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:45:58,168 INFO L158 Benchmark]: RCFGBuilder took 857.81ms. Allocated memory is still 157.3MB. Free memory was 100.2MB in the beginning and 78.7MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-25 17:45:58,168 INFO L158 Benchmark]: TraceAbstraction took 16990.14ms. Allocated memory was 157.3MB in the beginning and 337.6MB in the end (delta: 180.4MB). Free memory was 78.2MB in the beginning and 170.4MB in the end (delta: -92.2MB). Peak memory consumption was 91.3MB. Max. memory is 16.1GB. [2022-11-25 17:45:58,169 INFO L158 Benchmark]: Witness Printer took 56.49ms. Allocated memory is still 337.6MB. Free memory was 170.4MB in the beginning and 167.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:45:58,170 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73ms. Allocated memory is still 157.3MB. Free memory was 127.2MB in the beginning and 127.1MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 319.91ms. Allocated memory is still 157.3MB. Free memory was 117.5MB in the beginning and 103.5MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.70ms. Allocated memory is still 157.3MB. Free memory was 103.5MB in the beginning and 101.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.33ms. Allocated memory is still 157.3MB. Free memory was 101.2MB in the beginning and 100.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 857.81ms. Allocated memory is still 157.3MB. Free memory was 100.2MB in the beginning and 78.7MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 16990.14ms. Allocated memory was 157.3MB in the beginning and 337.6MB in the end (delta: 180.4MB). Free memory was 78.2MB in the beginning and 170.4MB in the end (delta: -92.2MB). Peak memory consumption was 91.3MB. Max. memory is 16.1GB. * Witness Printer took 56.49ms. Allocated memory is still 337.6MB. Free memory was 170.4MB in the beginning and 167.2MB 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: 7.7s, 135 PlacesBefore, 43 PlacesAfterwards, 127 TransitionsBefore, 33 TransitionsAfterwards, 930 CoEnabledTransitionPairs, 8 FixpointIterations, 77 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 125 TotalNumberOfCompositions, 2508 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1402, independent: 1311, independent conditional: 0, independent unconditional: 1311, dependent: 91, dependent conditional: 0, dependent unconditional: 91, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 680, independent: 657, independent conditional: 0, independent unconditional: 657, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 680, independent: 640, independent conditional: 0, independent unconditional: 640, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 40, independent: 17, independent conditional: 0, independent unconditional: 17, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 159, independent: 47, independent conditional: 0, independent unconditional: 47, dependent: 112, dependent conditional: 0, dependent unconditional: 112, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1402, independent: 654, independent conditional: 0, independent unconditional: 654, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 680, unknown conditional: 0, unknown unconditional: 680] , Statistics on independence cache: Total cache size (in pairs): 81, Positive cache size: 72, Positive conditional cache size: 0, Positive unconditional cache size: 72, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -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: 124]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 101]: 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, 159 locations, 17 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: 16.8s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1075 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 659 mSDsluCounter, 369 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 243 mSDsCounter, 190 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2616 IncrementalHoareTripleChecker+Invalid, 2806 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 190 mSolverCounterUnsat, 126 mSDtfsCounter, 2616 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=11, InterpolantAutomatonStates: 122, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 311 NumberOfCodeBlocks, 311 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 290 ConstructedInterpolants, 0 QuantifiedInterpolants, 1353 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 21 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 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 17:45:58,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcaf068e-aee5-405b-9816-6738cb17a561/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