./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3cbf38-37b8-483d-a618-06c855f1bf9c/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3cbf38-37b8-483d-a618-06c855f1bf9c/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3cbf38-37b8-483d-a618-06c855f1bf9c/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3cbf38-37b8-483d-a618-06c855f1bf9c/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3cbf38-37b8-483d-a618-06c855f1bf9c/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3cbf38-37b8-483d-a618-06c855f1bf9c/bin/uautomizer-uyxdKDjOR8 --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 084d7ddce3c53222c6533ccae99969e854061e3b422eaf94457157515e3bd009 --- 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-2329fc7 [2022-12-13 17:00:58,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:00:58,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:00:58,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:00:58,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:00:58,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:00:58,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:00:58,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:00:58,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:00:58,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:00:58,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:00:58,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:00:58,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:00:58,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:00:58,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:00:58,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:00:58,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:00:58,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:00:58,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:00:58,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:00:58,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:00:58,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:00:58,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:00:58,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:00:58,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:00:58,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:00:58,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:00:58,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:00:58,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:00:58,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:00:58,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:00:58,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:00:58,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:00:58,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:00:58,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:00:58,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:00:58,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:00:58,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:00:58,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:00:58,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:00:58,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:00:58,143 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3cbf38-37b8-483d-a618-06c855f1bf9c/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 17:00:58,159 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:00:58,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:00:58,159 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:00:58,159 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:00:58,160 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:00:58,160 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:00:58,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:00:58,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:00:58,161 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:00:58,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:00:58,161 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:00:58,161 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 17:00:58,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:00:58,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:00:58,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:00:58,162 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 17:00:58,162 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 17:00:58,162 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 17:00:58,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:00:58,163 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 17:00:58,163 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:00:58,163 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:00:58,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:00:58,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:00:58,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:00:58,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:00:58,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:00:58,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:00:58,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:00:58,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:00:58,164 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:00:58,165 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:00:58,165 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:00:58,165 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:00:58,165 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_0f3cbf38-37b8-483d-a618-06c855f1bf9c/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3cbf38-37b8-483d-a618-06c855f1bf9c/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 084d7ddce3c53222c6533ccae99969e854061e3b422eaf94457157515e3bd009 [2022-12-13 17:00:58,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:00:58,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:00:58,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:00:58,369 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:00:58,369 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:00:58,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3cbf38-37b8-483d-a618-06c855f1bf9c/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2022-12-13 17:01:00,940 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:01:01,091 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:01:01,092 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3cbf38-37b8-483d-a618-06c855f1bf9c/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2022-12-13 17:01:01,096 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3cbf38-37b8-483d-a618-06c855f1bf9c/bin/uautomizer-uyxdKDjOR8/data/baa141f78/17c560afb10f458c9082e1e14e99605e/FLAG335421b6e [2022-12-13 17:01:01,106 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3cbf38-37b8-483d-a618-06c855f1bf9c/bin/uautomizer-uyxdKDjOR8/data/baa141f78/17c560afb10f458c9082e1e14e99605e [2022-12-13 17:01:01,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:01:01,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:01:01,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:01:01,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:01:01,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:01:01,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:01:01" (1/1) ... [2022-12-13 17:01:01,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465ca238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:01:01, skipping insertion in model container [2022-12-13 17:01:01,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:01:01" (1/1) ... [2022-12-13 17:01:01,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:01:01,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:01:01,231 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,233 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,233 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,234 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,234 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,234 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,234 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,235 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,235 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,235 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,236 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,237 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,237 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,237 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,237 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,238 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,238 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,239 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,239 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,239 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,240 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,240 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,240 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,240 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,241 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,241 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,241 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,242 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,242 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,242 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,242 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,243 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,243 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,243 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,244 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,244 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,244 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,244 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,244 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,245 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,245 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,245 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,252 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_0f3cbf38-37b8-483d-a618-06c855f1bf9c/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c[3963,3976] [2022-12-13 17:01:01,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:01:01,263 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:01:01,273 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,273 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,273 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,274 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,274 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,274 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,274 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,274 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,274 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,275 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,275 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,275 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,276 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,276 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,277 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,277 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,277 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,278 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,278 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,278 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,279 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,279 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,279 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,279 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,280 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,280 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,280 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,281 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,281 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,281 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,281 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,282 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,282 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,282 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,282 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,283 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,283 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,283 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,283 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,284 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,284 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:01:01,284 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:01:01,289 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_0f3cbf38-37b8-483d-a618-06c855f1bf9c/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c[3963,3976] [2022-12-13 17:01:01,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:01:01,300 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:01:01,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:01:01 WrapperNode [2022-12-13 17:01:01,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:01:01,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:01:01,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:01:01,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:01:01,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:01:01" (1/1) ... [2022-12-13 17:01:01,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:01:01" (1/1) ... [2022-12-13 17:01:01,332 INFO L138 Inliner]: procedures = 24, calls = 85, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 238 [2022-12-13 17:01:01,332 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:01:01,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:01:01,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:01:01,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:01:01,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:01:01" (1/1) ... [2022-12-13 17:01:01,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:01:01" (1/1) ... [2022-12-13 17:01:01,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:01:01" (1/1) ... [2022-12-13 17:01:01,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:01:01" (1/1) ... [2022-12-13 17:01:01,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:01:01" (1/1) ... [2022-12-13 17:01:01,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:01:01" (1/1) ... [2022-12-13 17:01:01,348 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:01:01" (1/1) ... [2022-12-13 17:01:01,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:01:01" (1/1) ... [2022-12-13 17:01:01,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:01:01,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:01:01,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:01:01,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:01:01,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:01:01" (1/1) ... [2022-12-13 17:01:01,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:01:01,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3cbf38-37b8-483d-a618-06c855f1bf9c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:01:01,377 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3cbf38-37b8-483d-a618-06c855f1bf9c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:01:01,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3cbf38-37b8-483d-a618-06c855f1bf9c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:01:01,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:01:01,406 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 17:01:01,406 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 17:01:01,406 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 17:01:01,407 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 17:01:01,407 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 17:01:01,407 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 17:01:01,407 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 17:01:01,407 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 17:01:01,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:01:01,407 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-12-13 17:01:01,407 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-12-13 17:01:01,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 17:01:01,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 17:01:01,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 17:01:01,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 17:01:01,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:01:01,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:01:01,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 17:01:01,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 17:01:01,410 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 17:01:01,505 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:01:01,507 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:01:01,812 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:01:01,872 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:01:01,872 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 17:01:01,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:01:01 BoogieIcfgContainer [2022-12-13 17:01:01,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:01:01,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:01:01,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:01:01,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:01:01,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:01:01" (1/3) ... [2022-12-13 17:01:01,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fcce498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:01:01, skipping insertion in model container [2022-12-13 17:01:01,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:01:01" (2/3) ... [2022-12-13 17:01:01,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fcce498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:01:01, skipping insertion in model container [2022-12-13 17:01:01,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:01:01" (3/3) ... [2022-12-13 17:01:01,881 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2022-12-13 17:01:01,895 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:01:01,895 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-12-13 17:01:01,895 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 17:01:01,949 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-12-13 17:01:01,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 189 transitions, 418 flow [2022-12-13 17:01:02,043 INFO L130 PetriNetUnfolder]: 2/184 cut-off events. [2022-12-13 17:01:02,043 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 17:01:02,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 184 events. 2/184 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 137 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 131. Up to 2 conditions per place. [2022-12-13 17:01:02,047 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 189 transitions, 418 flow [2022-12-13 17:01:02,050 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 179 transitions, 388 flow [2022-12-13 17:01:02,053 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:01:02,060 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 193 places, 179 transitions, 388 flow [2022-12-13 17:01:02,062 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 193 places, 179 transitions, 388 flow [2022-12-13 17:01:02,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 179 transitions, 388 flow [2022-12-13 17:01:02,090 INFO L130 PetriNetUnfolder]: 2/179 cut-off events. [2022-12-13 17:01:02,090 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 17:01:02,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 179 events. 2/179 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 131. Up to 2 conditions per place. [2022-12-13 17:01:02,092 INFO L119 LiptonReduction]: Number of co-enabled transitions 2702 [2022-12-13 17:01:09,622 INFO L134 LiptonReduction]: Checked pairs total: 16887 [2022-12-13 17:01:09,623 INFO L136 LiptonReduction]: Total number of compositions: 155 [2022-12-13 17:01:09,637 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:01:09,643 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;@226e631, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:01:09,643 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-12-13 17:01:09,644 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 17:01:09,644 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:01:09,644 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:01:09,645 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 17:01:09,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:01:09,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:01:09,649 INFO L85 PathProgramCache]: Analyzing trace with hash 747, now seen corresponding path program 1 times [2022-12-13 17:01:09,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:01:09,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979208751] [2022-12-13 17:01:09,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:01:09,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:01:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:01:09,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:01:09,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:01:09,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979208751] [2022-12-13 17:01:09,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979208751] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:01:09,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:01:09,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 17:01:09,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520816574] [2022-12-13 17:01:09,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:01:09,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 17:01:09,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:01:09,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 17:01:09,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 17:01:09,757 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 344 [2022-12-13 17:01:09,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 63 transitions, 156 flow. Second operand has 2 states, 2 states have (on average 161.5) internal successors, (323), 2 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:09,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:01:09,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 344 [2022-12-13 17:01:09,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:01:12,068 INFO L130 PetriNetUnfolder]: 21849/30118 cut-off events. [2022-12-13 17:01:12,068 INFO L131 PetriNetUnfolder]: For 976/976 co-relation queries the response was YES. [2022-12-13 17:01:12,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59816 conditions, 30118 events. 21849/30118 cut-off events. For 976/976 co-relation queries the response was YES. Maximal size of possible extension queue 1333. Compared 183357 event pairs, 21849 based on Foata normal form. 0/26377 useless extension candidates. Maximal degree in co-relation 49226. Up to 28669 conditions per place. [2022-12-13 17:01:12,205 INFO L137 encePairwiseOnDemand]: 341/344 looper letters, 54 selfloop transitions, 0 changer transitions 0/60 dead transitions. [2022-12-13 17:01:12,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 60 transitions, 258 flow [2022-12-13 17:01:12,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 17:01:12,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 17:01:12,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 379 transitions. [2022-12-13 17:01:12,215 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5508720930232558 [2022-12-13 17:01:12,216 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 379 transitions. [2022-12-13 17:01:12,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 379 transitions. [2022-12-13 17:01:12,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:01:12,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 379 transitions. [2022-12-13 17:01:12,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 189.5) internal successors, (379), 2 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:12,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 344.0) internal successors, (1032), 3 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:12,226 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 344.0) internal successors, (1032), 3 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:12,227 INFO L175 Difference]: Start difference. First operand has 79 places, 63 transitions, 156 flow. Second operand 2 states and 379 transitions. [2022-12-13 17:01:12,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 60 transitions, 258 flow [2022-12-13 17:01:12,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 60 transitions, 238 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-12-13 17:01:12,268 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 130 flow [2022-12-13 17:01:12,270 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=130, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2022-12-13 17:01:12,272 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -12 predicate places. [2022-12-13 17:01:12,272 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 130 flow [2022-12-13 17:01:12,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 161.5) internal successors, (323), 2 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:12,273 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:01:12,273 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 17:01:12,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:01:12,273 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:01:12,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:01:12,273 INFO L85 PathProgramCache]: Analyzing trace with hash 736569, now seen corresponding path program 1 times [2022-12-13 17:01:12,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:01:12,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903588910] [2022-12-13 17:01:12,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:01:12,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:01:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:01:12,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:01:12,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:01:12,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903588910] [2022-12-13 17:01:12,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903588910] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:01:12,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:01:12,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:01:12,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941319412] [2022-12-13 17:01:12,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:01:12,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:01:12,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:01:12,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:01:12,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:01:12,711 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 344 [2022-12-13 17:01:12,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:12,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:01:12,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 344 [2022-12-13 17:01:12,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:01:14,266 INFO L130 PetriNetUnfolder]: 21078/29085 cut-off events. [2022-12-13 17:01:14,267 INFO L131 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2022-12-13 17:01:14,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57066 conditions, 29085 events. 21078/29085 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 1323. Compared 177009 event pairs, 21078 based on Foata normal form. 0/25604 useless extension candidates. Maximal degree in co-relation 57063. Up to 27637 conditions per place. [2022-12-13 17:01:14,386 INFO L137 encePairwiseOnDemand]: 341/344 looper letters, 51 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2022-12-13 17:01:14,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 58 transitions, 230 flow [2022-12-13 17:01:14,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:01:14,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:01:14,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 501 transitions. [2022-12-13 17:01:14,389 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48546511627906974 [2022-12-13 17:01:14,389 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 501 transitions. [2022-12-13 17:01:14,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 501 transitions. [2022-12-13 17:01:14,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:01:14,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 501 transitions. [2022-12-13 17:01:14,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:14,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:14,393 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:14,393 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 130 flow. Second operand 3 states and 501 transitions. [2022-12-13 17:01:14,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 58 transitions, 230 flow [2022-12-13 17:01:14,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 58 transitions, 230 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 17:01:14,395 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 128 flow [2022-12-13 17:01:14,395 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2022-12-13 17:01:14,396 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -12 predicate places. [2022-12-13 17:01:14,396 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 128 flow [2022-12-13 17:01:14,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:14,396 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:01:14,396 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 17:01:14,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 17:01:14,397 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:01:14,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:01:14,397 INFO L85 PathProgramCache]: Analyzing trace with hash 736570, now seen corresponding path program 1 times [2022-12-13 17:01:14,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:01:14,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644514647] [2022-12-13 17:01:14,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:01:14,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:01:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:01:14,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:01:14,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:01:14,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644514647] [2022-12-13 17:01:14,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644514647] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:01:14,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:01:14,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:01:14,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696357394] [2022-12-13 17:01:14,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:01:14,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:01:14,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:01:14,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:01:14,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:01:14,687 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 344 [2022-12-13 17:01:14,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:14,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:01:14,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 344 [2022-12-13 17:01:14,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:01:16,030 INFO L130 PetriNetUnfolder]: 20307/28052 cut-off events. [2022-12-13 17:01:16,030 INFO L131 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2022-12-13 17:01:16,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55004 conditions, 28052 events. 20307/28052 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 1315. Compared 170551 event pairs, 20307 based on Foata normal form. 0/24831 useless extension candidates. Maximal degree in co-relation 55000. Up to 26606 conditions per place. [2022-12-13 17:01:16,151 INFO L137 encePairwiseOnDemand]: 341/344 looper letters, 49 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2022-12-13 17:01:16,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 56 transitions, 224 flow [2022-12-13 17:01:16,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:01:16,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:01:16,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2022-12-13 17:01:16,153 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5038759689922481 [2022-12-13 17:01:16,153 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2022-12-13 17:01:16,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2022-12-13 17:01:16,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:01:16,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2022-12-13 17:01:16,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:16,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:16,157 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:16,157 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 128 flow. Second operand 3 states and 520 transitions. [2022-12-13 17:01:16,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 56 transitions, 224 flow [2022-12-13 17:01:16,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 56 transitions, 223 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:01:16,159 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 125 flow [2022-12-13 17:01:16,159 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2022-12-13 17:01:16,159 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -13 predicate places. [2022-12-13 17:01:16,159 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 125 flow [2022-12-13 17:01:16,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:16,160 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:01:16,160 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 17:01:16,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 17:01:16,160 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:01:16,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:01:16,160 INFO L85 PathProgramCache]: Analyzing trace with hash 707859762, now seen corresponding path program 1 times [2022-12-13 17:01:16,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:01:16,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297024777] [2022-12-13 17:01:16,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:01:16,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:01:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:01:16,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:01:16,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:01:16,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297024777] [2022-12-13 17:01:16,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297024777] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:01:16,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:01:16,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:01:16,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461731112] [2022-12-13 17:01:16,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:01:16,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:01:16,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:01:16,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:01:16,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:01:16,329 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 344 [2022-12-13 17:01:16,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:16,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:01:16,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 344 [2022-12-13 17:01:16,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:01:17,725 INFO L130 PetriNetUnfolder]: 20139/27800 cut-off events. [2022-12-13 17:01:17,726 INFO L131 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2022-12-13 17:01:17,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54505 conditions, 27800 events. 20139/27800 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 1315. Compared 168957 event pairs, 20139 based on Foata normal form. 0/24661 useless extension candidates. Maximal degree in co-relation 54501. Up to 26358 conditions per place. [2022-12-13 17:01:17,843 INFO L137 encePairwiseOnDemand]: 341/344 looper letters, 47 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2022-12-13 17:01:17,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 54 transitions, 217 flow [2022-12-13 17:01:17,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:01:17,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:01:17,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2022-12-13 17:01:17,844 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48158914728682173 [2022-12-13 17:01:17,844 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2022-12-13 17:01:17,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2022-12-13 17:01:17,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:01:17,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2022-12-13 17:01:17,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:17,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:17,847 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:17,847 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 125 flow. Second operand 3 states and 497 transitions. [2022-12-13 17:01:17,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 54 transitions, 217 flow [2022-12-13 17:01:17,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 54 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:01:17,848 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 122 flow [2022-12-13 17:01:17,848 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2022-12-13 17:01:17,849 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -14 predicate places. [2022-12-13 17:01:17,849 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 122 flow [2022-12-13 17:01:17,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:17,849 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:01:17,849 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 17:01:17,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 17:01:17,849 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:01:17,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:01:17,850 INFO L85 PathProgramCache]: Analyzing trace with hash 707859761, now seen corresponding path program 1 times [2022-12-13 17:01:17,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:01:17,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437800271] [2022-12-13 17:01:17,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:01:17,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:01:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:01:17,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:01:17,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:01:17,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437800271] [2022-12-13 17:01:17,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437800271] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:01:17,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:01:17,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:01:17,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481962271] [2022-12-13 17:01:17,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:01:17,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:01:17,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:01:17,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:01:17,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:01:18,023 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 344 [2022-12-13 17:01:18,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:18,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:01:18,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 344 [2022-12-13 17:01:18,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:01:19,235 INFO L130 PetriNetUnfolder]: 19971/27548 cut-off events. [2022-12-13 17:01:19,235 INFO L131 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2022-12-13 17:01:19,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54006 conditions, 27548 events. 19971/27548 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 1315. Compared 167622 event pairs, 19971 based on Foata normal form. 0/24491 useless extension candidates. Maximal degree in co-relation 54002. Up to 26110 conditions per place. [2022-12-13 17:01:19,349 INFO L137 encePairwiseOnDemand]: 341/344 looper letters, 45 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2022-12-13 17:01:19,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 52 transitions, 210 flow [2022-12-13 17:01:19,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:01:19,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:01:19,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2022-12-13 17:01:19,350 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-12-13 17:01:19,350 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2022-12-13 17:01:19,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2022-12-13 17:01:19,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:01:19,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2022-12-13 17:01:19,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:19,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:19,353 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:19,353 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 122 flow. Second operand 3 states and 516 transitions. [2022-12-13 17:01:19,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 52 transitions, 210 flow [2022-12-13 17:01:19,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 52 transitions, 209 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:01:19,355 INFO L231 Difference]: Finished difference. Result has 64 places, 52 transitions, 119 flow [2022-12-13 17:01:19,355 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=64, PETRI_TRANSITIONS=52} [2022-12-13 17:01:19,355 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -15 predicate places. [2022-12-13 17:01:19,355 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 52 transitions, 119 flow [2022-12-13 17:01:19,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:19,355 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:01:19,356 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:01:19,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 17:01:19,356 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:01:19,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:01:19,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1648414386, now seen corresponding path program 1 times [2022-12-13 17:01:19,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:01:19,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429622383] [2022-12-13 17:01:19,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:01:19,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:01:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:01:19,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:01:19,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:01:19,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429622383] [2022-12-13 17:01:19,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429622383] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:01:19,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:01:19,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:01:19,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156884172] [2022-12-13 17:01:19,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:01:19,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:01:19,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:01:19,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:01:19,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:01:19,495 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 344 [2022-12-13 17:01:19,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:19,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:01:19,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 344 [2022-12-13 17:01:19,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:01:20,735 INFO L130 PetriNetUnfolder]: 19803/27284 cut-off events. [2022-12-13 17:01:20,736 INFO L131 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2022-12-13 17:01:20,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53495 conditions, 27284 events. 19803/27284 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 165595 event pairs, 19803 based on Foata normal form. 0/24307 useless extension candidates. Maximal degree in co-relation 53491. Up to 25862 conditions per place. [2022-12-13 17:01:20,848 INFO L137 encePairwiseOnDemand]: 341/344 looper letters, 43 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2022-12-13 17:01:20,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 50 transitions, 203 flow [2022-12-13 17:01:20,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:01:20,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:01:20,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 514 transitions. [2022-12-13 17:01:20,849 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49806201550387597 [2022-12-13 17:01:20,849 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 514 transitions. [2022-12-13 17:01:20,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 514 transitions. [2022-12-13 17:01:20,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:01:20,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 514 transitions. [2022-12-13 17:01:20,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:20,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:20,852 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:20,852 INFO L175 Difference]: Start difference. First operand has 64 places, 52 transitions, 119 flow. Second operand 3 states and 514 transitions. [2022-12-13 17:01:20,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 50 transitions, 203 flow [2022-12-13 17:01:20,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 50 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:01:20,853 INFO L231 Difference]: Finished difference. Result has 63 places, 50 transitions, 116 flow [2022-12-13 17:01:20,853 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=63, PETRI_TRANSITIONS=50} [2022-12-13 17:01:20,853 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -16 predicate places. [2022-12-13 17:01:20,854 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 50 transitions, 116 flow [2022-12-13 17:01:20,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:20,854 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:01:20,854 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:01:20,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 17:01:20,854 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:01:20,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:01:20,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1648414384, now seen corresponding path program 1 times [2022-12-13 17:01:20,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:01:20,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372571320] [2022-12-13 17:01:20,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:01:20,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:01:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:01:20,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:01:20,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:01:20,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372571320] [2022-12-13 17:01:20,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372571320] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:01:20,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:01:20,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:01:20,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441302873] [2022-12-13 17:01:20,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:01:20,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:01:20,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:01:20,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:01:20,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:01:20,940 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 344 [2022-12-13 17:01:20,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:20,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:01:20,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 344 [2022-12-13 17:01:20,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:01:22,095 INFO L130 PetriNetUnfolder]: 19635/27020 cut-off events. [2022-12-13 17:01:22,096 INFO L131 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2022-12-13 17:01:22,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52984 conditions, 27020 events. 19635/27020 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 1313. Compared 163832 event pairs, 19635 based on Foata normal form. 0/24123 useless extension candidates. Maximal degree in co-relation 52980. Up to 25614 conditions per place. [2022-12-13 17:01:22,205 INFO L137 encePairwiseOnDemand]: 341/344 looper letters, 41 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2022-12-13 17:01:22,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 48 transitions, 196 flow [2022-12-13 17:01:22,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:01:22,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:01:22,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2022-12-13 17:01:22,207 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4757751937984496 [2022-12-13 17:01:22,207 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2022-12-13 17:01:22,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2022-12-13 17:01:22,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:01:22,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2022-12-13 17:01:22,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:22,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:22,209 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:22,209 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 116 flow. Second operand 3 states and 491 transitions. [2022-12-13 17:01:22,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 48 transitions, 196 flow [2022-12-13 17:01:22,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 48 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:01:22,210 INFO L231 Difference]: Finished difference. Result has 62 places, 48 transitions, 113 flow [2022-12-13 17:01:22,211 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=62, PETRI_TRANSITIONS=48} [2022-12-13 17:01:22,211 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -17 predicate places. [2022-12-13 17:01:22,211 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 48 transitions, 113 flow [2022-12-13 17:01:22,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:22,211 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:01:22,211 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:01:22,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 17:01:22,212 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:01:22,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:01:22,212 INFO L85 PathProgramCache]: Analyzing trace with hash -716690254, now seen corresponding path program 1 times [2022-12-13 17:01:22,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:01:22,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686464231] [2022-12-13 17:01:22,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:01:22,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:01:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:01:22,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:01:22,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:01:22,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686464231] [2022-12-13 17:01:22,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686464231] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:01:22,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:01:22,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:01:22,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270689444] [2022-12-13 17:01:22,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:01:22,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:01:22,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:01:22,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:01:22,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:01:22,302 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 344 [2022-12-13 17:01:22,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 48 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:22,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:01:22,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 344 [2022-12-13 17:01:22,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:01:23,677 INFO L130 PetriNetUnfolder]: 18864/25925 cut-off events. [2022-12-13 17:01:23,678 INFO L131 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2022-12-13 17:01:23,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50859 conditions, 25925 events. 18864/25925 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 1268. Compared 155869 event pairs, 18864 based on Foata normal form. 0/23304 useless extension candidates. Maximal degree in co-relation 50855. Up to 24583 conditions per place. [2022-12-13 17:01:23,819 INFO L137 encePairwiseOnDemand]: 341/344 looper letters, 39 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2022-12-13 17:01:23,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 46 transitions, 189 flow [2022-12-13 17:01:23,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:01:23,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:01:23,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 492 transitions. [2022-12-13 17:01:23,822 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47674418604651164 [2022-12-13 17:01:23,822 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 492 transitions. [2022-12-13 17:01:23,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 492 transitions. [2022-12-13 17:01:23,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:01:23,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 492 transitions. [2022-12-13 17:01:23,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:23,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:23,825 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:23,825 INFO L175 Difference]: Start difference. First operand has 62 places, 48 transitions, 113 flow. Second operand 3 states and 492 transitions. [2022-12-13 17:01:23,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 46 transitions, 189 flow [2022-12-13 17:01:23,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 46 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:01:23,827 INFO L231 Difference]: Finished difference. Result has 61 places, 46 transitions, 110 flow [2022-12-13 17:01:23,827 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=61, PETRI_TRANSITIONS=46} [2022-12-13 17:01:23,827 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -18 predicate places. [2022-12-13 17:01:23,827 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 46 transitions, 110 flow [2022-12-13 17:01:23,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:23,828 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:01:23,828 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:01:23,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 17:01:23,828 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:01:23,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:01:23,828 INFO L85 PathProgramCache]: Analyzing trace with hash -716690253, now seen corresponding path program 1 times [2022-12-13 17:01:23,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:01:23,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143336061] [2022-12-13 17:01:23,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:01:23,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:01:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:01:23,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:01:23,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:01:23,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143336061] [2022-12-13 17:01:23,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143336061] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:01:23,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:01:23,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:01:23,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610663456] [2022-12-13 17:01:23,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:01:23,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:01:23,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:01:23,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:01:23,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:01:23,917 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 344 [2022-12-13 17:01:23,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 46 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:23,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:01:23,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 344 [2022-12-13 17:01:23,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:01:25,403 INFO L130 PetriNetUnfolder]: 18093/24830 cut-off events. [2022-12-13 17:01:25,403 INFO L131 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2022-12-13 17:01:25,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48734 conditions, 24830 events. 18093/24830 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 1227. Compared 148141 event pairs, 18093 based on Foata normal form. 0/22485 useless extension candidates. Maximal degree in co-relation 48730. Up to 23552 conditions per place. [2022-12-13 17:01:25,518 INFO L137 encePairwiseOnDemand]: 341/344 looper letters, 37 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2022-12-13 17:01:25,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 44 transitions, 182 flow [2022-12-13 17:01:25,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:01:25,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:01:25,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2022-12-13 17:01:25,521 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47189922480620156 [2022-12-13 17:01:25,521 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2022-12-13 17:01:25,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2022-12-13 17:01:25,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:01:25,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2022-12-13 17:01:25,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:25,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:25,523 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:25,523 INFO L175 Difference]: Start difference. First operand has 61 places, 46 transitions, 110 flow. Second operand 3 states and 487 transitions. [2022-12-13 17:01:25,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 44 transitions, 182 flow [2022-12-13 17:01:25,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 44 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:01:25,525 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 107 flow [2022-12-13 17:01:25,525 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2022-12-13 17:01:25,525 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -19 predicate places. [2022-12-13 17:01:25,525 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 107 flow [2022-12-13 17:01:25,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:25,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:01:25,526 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:01:25,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 17:01:25,526 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:01:25,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:01:25,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1544549857, now seen corresponding path program 1 times [2022-12-13 17:01:25,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:01:25,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671071353] [2022-12-13 17:01:25,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:01:25,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:01:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:01:25,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:01:25,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:01:25,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671071353] [2022-12-13 17:01:25,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671071353] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:01:25,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:01:25,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:01:25,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800630126] [2022-12-13 17:01:25,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:01:25,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:01:25,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:01:25,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:01:25,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:01:25,604 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 344 [2022-12-13 17:01:25,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:25,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:01:25,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 344 [2022-12-13 17:01:25,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:01:26,494 INFO L130 PetriNetUnfolder]: 14253/19710 cut-off events. [2022-12-13 17:01:26,494 INFO L131 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2022-12-13 17:01:26,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38751 conditions, 19710 events. 14253/19710 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 115333 event pairs, 14253 based on Foata normal form. 0/18453 useless extension candidates. Maximal degree in co-relation 38747. Up to 18688 conditions per place. [2022-12-13 17:01:26,564 INFO L137 encePairwiseOnDemand]: 342/344 looper letters, 36 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2022-12-13 17:01:26,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 43 transitions, 179 flow [2022-12-13 17:01:26,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:01:26,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:01:26,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2022-12-13 17:01:26,567 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4728682170542636 [2022-12-13 17:01:26,567 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2022-12-13 17:01:26,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2022-12-13 17:01:26,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:01:26,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2022-12-13 17:01:26,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:26,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:26,570 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:26,570 INFO L175 Difference]: Start difference. First operand has 60 places, 44 transitions, 107 flow. Second operand 3 states and 488 transitions. [2022-12-13 17:01:26,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 43 transitions, 179 flow [2022-12-13 17:01:26,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 43 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:01:26,571 INFO L231 Difference]: Finished difference. Result has 60 places, 43 transitions, 106 flow [2022-12-13 17:01:26,571 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=60, PETRI_TRANSITIONS=43} [2022-12-13 17:01:26,571 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -19 predicate places. [2022-12-13 17:01:26,571 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 43 transitions, 106 flow [2022-12-13 17:01:26,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:26,572 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:01:26,572 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:01:26,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 17:01:26,572 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:01:26,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:01:26,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1544549858, now seen corresponding path program 1 times [2022-12-13 17:01:26,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:01:26,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658869310] [2022-12-13 17:01:26,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:01:26,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:01:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:01:26,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:01:26,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:01:26,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658869310] [2022-12-13 17:01:26,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658869310] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:01:26,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:01:26,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:01:26,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791201262] [2022-12-13 17:01:26,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:01:26,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:01:26,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:01:26,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:01:26,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:01:26,882 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 344 [2022-12-13 17:01:26,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 43 transitions, 106 flow. Second operand has 7 states, 7 states have (on average 134.57142857142858) internal successors, (942), 7 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:26,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:01:26,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 344 [2022-12-13 17:01:26,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:01:27,588 INFO L130 PetriNetUnfolder]: 10413/14590 cut-off events. [2022-12-13 17:01:27,589 INFO L131 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2022-12-13 17:01:27,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28768 conditions, 14590 events. 10413/14590 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 83706 event pairs, 10413 based on Foata normal form. 0/14421 useless extension candidates. Maximal degree in co-relation 28764. Up to 13824 conditions per place. [2022-12-13 17:01:27,647 INFO L137 encePairwiseOnDemand]: 342/344 looper letters, 35 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2022-12-13 17:01:27,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 42 transitions, 176 flow [2022-12-13 17:01:27,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:01:27,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:01:27,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 436 transitions. [2022-12-13 17:01:27,649 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42248062015503873 [2022-12-13 17:01:27,649 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 436 transitions. [2022-12-13 17:01:27,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 436 transitions. [2022-12-13 17:01:27,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:01:27,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 436 transitions. [2022-12-13 17:01:27,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:27,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:27,651 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:27,651 INFO L175 Difference]: Start difference. First operand has 60 places, 43 transitions, 106 flow. Second operand 3 states and 436 transitions. [2022-12-13 17:01:27,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 42 transitions, 176 flow [2022-12-13 17:01:27,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 42 transitions, 175 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:01:27,652 INFO L231 Difference]: Finished difference. Result has 60 places, 42 transitions, 105 flow [2022-12-13 17:01:27,652 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=60, PETRI_TRANSITIONS=42} [2022-12-13 17:01:27,653 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -19 predicate places. [2022-12-13 17:01:27,653 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 42 transitions, 105 flow [2022-12-13 17:01:27,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 134.57142857142858) internal successors, (942), 7 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:27,653 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:01:27,653 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:01:27,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 17:01:27,653 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:01:27,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:01:27,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1169449814, now seen corresponding path program 1 times [2022-12-13 17:01:27,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:01:27,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986309335] [2022-12-13 17:01:27,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:01:27,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:01:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:01:28,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:01:28,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:01:28,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986309335] [2022-12-13 17:01:28,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986309335] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:01:28,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:01:28,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:01:28,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567682417] [2022-12-13 17:01:28,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:01:28,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:01:28,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:01:28,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:01:28,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:01:28,313 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 344 [2022-12-13 17:01:28,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 42 transitions, 105 flow. Second operand has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:28,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:01:28,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 344 [2022-12-13 17:01:28,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:01:31,427 INFO L130 PetriNetUnfolder]: 53433/69727 cut-off events. [2022-12-13 17:01:31,427 INFO L131 PetriNetUnfolder]: For 1105/1105 co-relation queries the response was YES. [2022-12-13 17:01:31,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140753 conditions, 69727 events. 53433/69727 cut-off events. For 1105/1105 co-relation queries the response was YES. Maximal size of possible extension queue 1643. Compared 368350 event pairs, 13820 based on Foata normal form. 1/69728 useless extension candidates. Maximal degree in co-relation 140749. Up to 35415 conditions per place. [2022-12-13 17:01:31,713 INFO L137 encePairwiseOnDemand]: 336/344 looper letters, 116 selfloop transitions, 15 changer transitions 15/146 dead transitions. [2022-12-13 17:01:31,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 146 transitions, 624 flow [2022-12-13 17:01:31,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:01:31,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 17:01:31,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1053 transitions. [2022-12-13 17:01:31,716 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5101744186046512 [2022-12-13 17:01:31,716 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1053 transitions. [2022-12-13 17:01:31,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1053 transitions. [2022-12-13 17:01:31,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:01:31,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1053 transitions. [2022-12-13 17:01:31,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 175.5) internal successors, (1053), 6 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:31,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 344.0) internal successors, (2408), 7 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:31,720 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 344.0) internal successors, (2408), 7 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:31,720 INFO L175 Difference]: Start difference. First operand has 60 places, 42 transitions, 105 flow. Second operand 6 states and 1053 transitions. [2022-12-13 17:01:31,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 146 transitions, 624 flow [2022-12-13 17:01:31,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 146 transitions, 623 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:01:31,722 INFO L231 Difference]: Finished difference. Result has 67 places, 59 transitions, 205 flow [2022-12-13 17:01:31,722 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=67, PETRI_TRANSITIONS=59} [2022-12-13 17:01:31,722 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -12 predicate places. [2022-12-13 17:01:31,722 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 59 transitions, 205 flow [2022-12-13 17:01:31,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:31,723 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:01:31,723 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:01:31,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 17:01:31,723 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:01:31,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:01:31,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1110206290, now seen corresponding path program 2 times [2022-12-13 17:01:31,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:01:31,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181281831] [2022-12-13 17:01:31,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:01:31,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:01:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:01:32,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:01:32,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:01:32,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181281831] [2022-12-13 17:01:32,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181281831] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:01:32,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:01:32,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:01:32,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128701892] [2022-12-13 17:01:32,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:01:32,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:01:32,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:01:32,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:01:32,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:01:32,107 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 344 [2022-12-13 17:01:32,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 59 transitions, 205 flow. Second operand has 8 states, 8 states have (on average 157.5) internal successors, (1260), 8 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:32,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:01:32,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 344 [2022-12-13 17:01:32,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:01:35,534 INFO L130 PetriNetUnfolder]: 37625/56190 cut-off events. [2022-12-13 17:01:35,535 INFO L131 PetriNetUnfolder]: For 3172/3304 co-relation queries the response was YES. [2022-12-13 17:01:35,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116280 conditions, 56190 events. 37625/56190 cut-off events. For 3172/3304 co-relation queries the response was YES. Maximal size of possible extension queue 2569. Compared 429239 event pairs, 4356 based on Foata normal form. 756/54481 useless extension candidates. Maximal degree in co-relation 116273. Up to 17087 conditions per place. [2022-12-13 17:01:35,825 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 154 selfloop transitions, 50 changer transitions 0/227 dead transitions. [2022-12-13 17:01:35,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 227 transitions, 985 flow [2022-12-13 17:01:35,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 17:01:35,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 17:01:35,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1736 transitions. [2022-12-13 17:01:35,831 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5046511627906977 [2022-12-13 17:01:35,831 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1736 transitions. [2022-12-13 17:01:35,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1736 transitions. [2022-12-13 17:01:35,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:01:35,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1736 transitions. [2022-12-13 17:01:35,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 173.6) internal successors, (1736), 10 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:35,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 344.0) internal successors, (3784), 11 states have internal predecessors, (3784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:35,841 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 344.0) internal successors, (3784), 11 states have internal predecessors, (3784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:35,842 INFO L175 Difference]: Start difference. First operand has 67 places, 59 transitions, 205 flow. Second operand 10 states and 1736 transitions. [2022-12-13 17:01:35,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 227 transitions, 985 flow [2022-12-13 17:01:35,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 227 transitions, 976 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 17:01:35,881 INFO L231 Difference]: Finished difference. Result has 81 places, 108 transitions, 515 flow [2022-12-13 17:01:35,881 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=515, PETRI_PLACES=81, PETRI_TRANSITIONS=108} [2022-12-13 17:01:35,882 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 2 predicate places. [2022-12-13 17:01:35,882 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 108 transitions, 515 flow [2022-12-13 17:01:35,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 157.5) internal successors, (1260), 8 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:35,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:01:35,882 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:01:35,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 17:01:35,883 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:01:35,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:01:35,883 INFO L85 PathProgramCache]: Analyzing trace with hash -800928528, now seen corresponding path program 3 times [2022-12-13 17:01:35,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:01:35,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112713171] [2022-12-13 17:01:35,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:01:35,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:01:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:01:36,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:01:36,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:01:36,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112713171] [2022-12-13 17:01:36,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112713171] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:01:36,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:01:36,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:01:36,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499281577] [2022-12-13 17:01:36,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:01:36,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:01:36,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:01:36,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:01:36,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:01:36,060 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 344 [2022-12-13 17:01:36,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 108 transitions, 515 flow. Second operand has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:36,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:01:36,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 344 [2022-12-13 17:01:36,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:01:40,326 INFO L130 PetriNetUnfolder]: 38395/57700 cut-off events. [2022-12-13 17:01:40,326 INFO L131 PetriNetUnfolder]: For 75494/80085 co-relation queries the response was YES. [2022-12-13 17:01:40,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173265 conditions, 57700 events. 38395/57700 cut-off events. For 75494/80085 co-relation queries the response was YES. Maximal size of possible extension queue 2567. Compared 447897 event pairs, 6214 based on Foata normal form. 2062/57586 useless extension candidates. Maximal degree in co-relation 173252. Up to 17438 conditions per place. [2022-12-13 17:01:40,728 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 114 selfloop transitions, 63 changer transitions 0/200 dead transitions. [2022-12-13 17:01:40,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 200 transitions, 1198 flow [2022-12-13 17:01:40,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:01:40,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 17:01:40,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1074 transitions. [2022-12-13 17:01:40,731 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5203488372093024 [2022-12-13 17:01:40,731 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1074 transitions. [2022-12-13 17:01:40,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1074 transitions. [2022-12-13 17:01:40,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:01:40,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1074 transitions. [2022-12-13 17:01:40,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:40,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 344.0) internal successors, (2408), 7 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:40,736 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 344.0) internal successors, (2408), 7 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:40,737 INFO L175 Difference]: Start difference. First operand has 81 places, 108 transitions, 515 flow. Second operand 6 states and 1074 transitions. [2022-12-13 17:01:40,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 200 transitions, 1198 flow [2022-12-13 17:01:41,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 200 transitions, 1198 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 17:01:41,040 INFO L231 Difference]: Finished difference. Result has 88 places, 123 transitions, 774 flow [2022-12-13 17:01:41,040 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=774, PETRI_PLACES=88, PETRI_TRANSITIONS=123} [2022-12-13 17:01:41,041 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 9 predicate places. [2022-12-13 17:01:41,041 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 123 transitions, 774 flow [2022-12-13 17:01:41,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:41,041 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:01:41,041 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:01:41,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 17:01:41,041 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:01:41,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:01:41,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1426095104, now seen corresponding path program 4 times [2022-12-13 17:01:41,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:01:41,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489032338] [2022-12-13 17:01:41,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:01:41,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:01:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:01:41,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:01:41,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:01:41,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489032338] [2022-12-13 17:01:41,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489032338] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:01:41,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:01:41,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 17:01:41,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732839139] [2022-12-13 17:01:41,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:01:41,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 17:01:41,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:01:41,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 17:01:41,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:01:41,346 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 344 [2022-12-13 17:01:41,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 123 transitions, 774 flow. Second operand has 10 states, 10 states have (on average 158.6) internal successors, (1586), 10 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:41,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:01:41,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 344 [2022-12-13 17:01:41,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:01:49,102 INFO L130 PetriNetUnfolder]: 58042/89396 cut-off events. [2022-12-13 17:01:49,102 INFO L131 PetriNetUnfolder]: For 198412/206656 co-relation queries the response was YES. [2022-12-13 17:01:49,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320408 conditions, 89396 events. 58042/89396 cut-off events. For 198412/206656 co-relation queries the response was YES. Maximal size of possible extension queue 4018. Compared 751168 event pairs, 7823 based on Foata normal form. 4594/90890 useless extension candidates. Maximal degree in co-relation 320392. Up to 23437 conditions per place. [2022-12-13 17:01:49,727 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 242 selfloop transitions, 155 changer transitions 0/420 dead transitions. [2022-12-13 17:01:49,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 420 transitions, 3279 flow [2022-12-13 17:01:49,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 17:01:49,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 17:01:49,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2449 transitions. [2022-12-13 17:01:49,731 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5085132890365448 [2022-12-13 17:01:49,731 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2449 transitions. [2022-12-13 17:01:49,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2449 transitions. [2022-12-13 17:01:49,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:01:49,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2449 transitions. [2022-12-13 17:01:49,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 174.92857142857142) internal successors, (2449), 14 states have internal predecessors, (2449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:49,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 344.0) internal successors, (5160), 15 states have internal predecessors, (5160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:49,739 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 344.0) internal successors, (5160), 15 states have internal predecessors, (5160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:49,739 INFO L175 Difference]: Start difference. First operand has 88 places, 123 transitions, 774 flow. Second operand 14 states and 2449 transitions. [2022-12-13 17:01:49,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 420 transitions, 3279 flow [2022-12-13 17:01:50,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 420 transitions, 3040 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 17:01:50,406 INFO L231 Difference]: Finished difference. Result has 106 places, 251 transitions, 2202 flow [2022-12-13 17:01:50,406 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2202, PETRI_PLACES=106, PETRI_TRANSITIONS=251} [2022-12-13 17:01:50,407 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 27 predicate places. [2022-12-13 17:01:50,407 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 251 transitions, 2202 flow [2022-12-13 17:01:50,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 158.6) internal successors, (1586), 10 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:50,407 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:01:50,408 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:01:50,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 17:01:50,408 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:01:50,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:01:50,408 INFO L85 PathProgramCache]: Analyzing trace with hash -2074580458, now seen corresponding path program 5 times [2022-12-13 17:01:50,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:01:50,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079719861] [2022-12-13 17:01:50,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:01:50,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:01:50,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:01:50,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:01:50,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:01:50,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079719861] [2022-12-13 17:01:50,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079719861] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:01:50,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:01:50,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:01:50,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359570313] [2022-12-13 17:01:50,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:01:50,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:01:50,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:01:50,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:01:50,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:01:50,681 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 344 [2022-12-13 17:01:50,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 251 transitions, 2202 flow. Second operand has 7 states, 7 states have (on average 158.14285714285714) internal successors, (1107), 7 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:01:50,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:01:50,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 344 [2022-12-13 17:01:50,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:01:59,909 INFO L130 PetriNetUnfolder]: 59640/92036 cut-off events. [2022-12-13 17:01:59,909 INFO L131 PetriNetUnfolder]: For 449221/461773 co-relation queries the response was YES. [2022-12-13 17:02:00,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382025 conditions, 92036 events. 59640/92036 cut-off events. For 449221/461773 co-relation queries the response was YES. Maximal size of possible extension queue 4158. Compared 780994 event pairs, 10690 based on Foata normal form. 3130/91811 useless extension candidates. Maximal degree in co-relation 382001. Up to 38689 conditions per place. [2022-12-13 17:02:00,752 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 230 selfloop transitions, 189 changer transitions 0/442 dead transitions. [2022-12-13 17:02:00,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 442 transitions, 4434 flow [2022-12-13 17:02:00,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 17:02:00,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 17:02:00,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1553 transitions. [2022-12-13 17:02:00,755 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5016149870801033 [2022-12-13 17:02:00,755 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1553 transitions. [2022-12-13 17:02:00,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1553 transitions. [2022-12-13 17:02:00,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:02:00,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1553 transitions. [2022-12-13 17:02:00,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 172.55555555555554) internal successors, (1553), 9 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:02:00,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 344.0) internal successors, (3440), 10 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:02:00,761 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 344.0) internal successors, (3440), 10 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:02:00,761 INFO L175 Difference]: Start difference. First operand has 106 places, 251 transitions, 2202 flow. Second operand 9 states and 1553 transitions. [2022-12-13 17:02:00,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 442 transitions, 4434 flow [2022-12-13 17:02:03,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 442 transitions, 4320 flow, removed 54 selfloop flow, removed 1 redundant places. [2022-12-13 17:02:03,752 INFO L231 Difference]: Finished difference. Result has 117 places, 338 transitions, 3794 flow [2022-12-13 17:02:03,753 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3794, PETRI_PLACES=117, PETRI_TRANSITIONS=338} [2022-12-13 17:02:03,753 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2022-12-13 17:02:03,753 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 338 transitions, 3794 flow [2022-12-13 17:02:03,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 158.14285714285714) internal successors, (1107), 7 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:02:03,753 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:02:03,753 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:02:03,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 17:02:03,754 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:02:03,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:02:03,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1916992778, now seen corresponding path program 6 times [2022-12-13 17:02:03,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:02:03,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877872430] [2022-12-13 17:02:03,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:02:03,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:02:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:02:03,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:02:03,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:02:03,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877872430] [2022-12-13 17:02:03,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877872430] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:02:03,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:02:03,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:02:03,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447144911] [2022-12-13 17:02:03,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:02:03,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:02:03,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:02:03,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:02:03,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:02:03,904 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 344 [2022-12-13 17:02:03,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 338 transitions, 3794 flow. Second operand has 5 states, 5 states have (on average 162.2) internal successors, (811), 5 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:02:03,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:02:03,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 344 [2022-12-13 17:02:03,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:02:15,337 INFO L130 PetriNetUnfolder]: 62849/98406 cut-off events. [2022-12-13 17:02:15,338 INFO L131 PetriNetUnfolder]: For 701642/713309 co-relation queries the response was YES. [2022-12-13 17:02:15,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462065 conditions, 98406 events. 62849/98406 cut-off events. For 701642/713309 co-relation queries the response was YES. Maximal size of possible extension queue 4472. Compared 861470 event pairs, 15438 based on Foata normal form. 3354/98686 useless extension candidates. Maximal degree in co-relation 462036. Up to 31213 conditions per place. [2022-12-13 17:02:16,124 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 204 selfloop transitions, 268 changer transitions 7/502 dead transitions. [2022-12-13 17:02:16,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 502 transitions, 6258 flow [2022-12-13 17:02:16,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:02:16,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 17:02:16,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 893 transitions. [2022-12-13 17:02:16,126 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5191860465116279 [2022-12-13 17:02:16,126 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 893 transitions. [2022-12-13 17:02:16,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 893 transitions. [2022-12-13 17:02:16,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:02:16,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 893 transitions. [2022-12-13 17:02:16,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 178.6) internal successors, (893), 5 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:02:16,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 344.0) internal successors, (2064), 6 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:02:16,130 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 344.0) internal successors, (2064), 6 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:02:16,130 INFO L175 Difference]: Start difference. First operand has 117 places, 338 transitions, 3794 flow. Second operand 5 states and 893 transitions. [2022-12-13 17:02:16,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 502 transitions, 6258 flow [2022-12-13 17:02:22,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 502 transitions, 6247 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:02:22,005 INFO L231 Difference]: Finished difference. Result has 122 places, 423 transitions, 5916 flow [2022-12-13 17:02:22,006 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=3525, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5916, PETRI_PLACES=122, PETRI_TRANSITIONS=423} [2022-12-13 17:02:22,006 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 43 predicate places. [2022-12-13 17:02:22,006 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 423 transitions, 5916 flow [2022-12-13 17:02:22,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 162.2) internal successors, (811), 5 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:02:22,006 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:02:22,006 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:02:22,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 17:02:22,006 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:02:22,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:02:22,007 INFO L85 PathProgramCache]: Analyzing trace with hash 38059604, now seen corresponding path program 7 times [2022-12-13 17:02:22,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:02:22,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573229962] [2022-12-13 17:02:22,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:02:22,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:02:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:02:22,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:02:22,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:02:22,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573229962] [2022-12-13 17:02:22,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573229962] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:02:22,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:02:22,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:02:22,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015713111] [2022-12-13 17:02:22,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:02:22,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:02:22,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:02:22,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:02:22,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:02:22,221 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 344 [2022-12-13 17:02:22,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 423 transitions, 5916 flow. Second operand has 7 states, 7 states have (on average 160.14285714285714) internal successors, (1121), 7 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:02:22,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:02:22,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 344 [2022-12-13 17:02:22,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:02:34,493 INFO L130 PetriNetUnfolder]: 63744/100729 cut-off events. [2022-12-13 17:02:34,493 INFO L131 PetriNetUnfolder]: For 969098/992346 co-relation queries the response was YES. [2022-12-13 17:02:34,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531298 conditions, 100729 events. 63744/100729 cut-off events. For 969098/992346 co-relation queries the response was YES. Maximal size of possible extension queue 4610. Compared 899568 event pairs, 6721 based on Foata normal form. 7478/105205 useless extension candidates. Maximal degree in co-relation 531265. Up to 34289 conditions per place. [2022-12-13 17:02:35,368 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 131 selfloop transitions, 478 changer transitions 2/634 dead transitions. [2022-12-13 17:02:35,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 634 transitions, 9163 flow [2022-12-13 17:02:35,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:02:35,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 17:02:35,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1251 transitions. [2022-12-13 17:02:35,370 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5195182724252492 [2022-12-13 17:02:35,371 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1251 transitions. [2022-12-13 17:02:35,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1251 transitions. [2022-12-13 17:02:35,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:02:35,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1251 transitions. [2022-12-13 17:02:35,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 178.71428571428572) internal successors, (1251), 7 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:02:35,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 344.0) internal successors, (2752), 8 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:02:35,374 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 344.0) internal successors, (2752), 8 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:02:35,375 INFO L175 Difference]: Start difference. First operand has 122 places, 423 transitions, 5916 flow. Second operand 7 states and 1251 transitions. [2022-12-13 17:02:35,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 634 transitions, 9163 flow [2022-12-13 17:02:42,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 634 transitions, 9139 flow, removed 12 selfloop flow, removed 0 redundant places. [2022-12-13 17:02:42,019 INFO L231 Difference]: Finished difference. Result has 132 places, 544 transitions, 9275 flow [2022-12-13 17:02:42,019 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=5900, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9275, PETRI_PLACES=132, PETRI_TRANSITIONS=544} [2022-12-13 17:02:42,020 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 53 predicate places. [2022-12-13 17:02:42,020 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 544 transitions, 9275 flow [2022-12-13 17:02:42,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 160.14285714285714) internal successors, (1121), 7 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:02:42,020 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:02:42,020 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:02:42,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 17:02:42,020 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:02:42,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:02:42,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1245750966, now seen corresponding path program 8 times [2022-12-13 17:02:42,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:02:42,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674674927] [2022-12-13 17:02:42,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:02:42,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:02:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:02:42,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:02:42,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:02:42,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674674927] [2022-12-13 17:02:42,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674674927] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:02:42,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:02:42,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:02:42,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677289307] [2022-12-13 17:02:42,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:02:42,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:02:42,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:02:42,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:02:42,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:02:42,318 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 344 [2022-12-13 17:02:42,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 544 transitions, 9275 flow. Second operand has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:02:42,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:02:42,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 344 [2022-12-13 17:02:42,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:02:56,531 INFO L130 PetriNetUnfolder]: 62949/99265 cut-off events. [2022-12-13 17:02:56,531 INFO L131 PetriNetUnfolder]: For 1396106/1413248 co-relation queries the response was YES. [2022-12-13 17:02:57,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602599 conditions, 99265 events. 62949/99265 cut-off events. For 1396106/1413248 co-relation queries the response was YES. Maximal size of possible extension queue 4531. Compared 872963 event pairs, 20014 based on Foata normal form. 2529/98680 useless extension candidates. Maximal degree in co-relation 602561. Up to 80287 conditions per place. [2022-12-13 17:02:57,586 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 459 selfloop transitions, 131 changer transitions 9/622 dead transitions. [2022-12-13 17:02:57,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 622 transitions, 11175 flow [2022-12-13 17:02:57,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:02:57,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 17:02:57,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1196 transitions. [2022-12-13 17:02:57,588 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49667774086378735 [2022-12-13 17:02:57,588 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1196 transitions. [2022-12-13 17:02:57,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1196 transitions. [2022-12-13 17:02:57,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:02:57,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1196 transitions. [2022-12-13 17:02:57,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 170.85714285714286) internal successors, (1196), 7 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:02:57,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 344.0) internal successors, (2752), 8 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:02:57,594 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 344.0) internal successors, (2752), 8 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:02:57,594 INFO L175 Difference]: Start difference. First operand has 132 places, 544 transitions, 9275 flow. Second operand 7 states and 1196 transitions. [2022-12-13 17:02:57,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 622 transitions, 11175 flow [2022-12-13 17:03:08,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 622 transitions, 10691 flow, removed 64 selfloop flow, removed 2 redundant places. [2022-12-13 17:03:08,051 INFO L231 Difference]: Finished difference. Result has 139 places, 554 transitions, 9426 flow [2022-12-13 17:03:08,051 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=8580, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9426, PETRI_PLACES=139, PETRI_TRANSITIONS=554} [2022-12-13 17:03:08,051 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 60 predicate places. [2022-12-13 17:03:08,051 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 554 transitions, 9426 flow [2022-12-13 17:03:08,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:03:08,051 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:03:08,052 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:03:08,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 17:03:08,052 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:03:08,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:03:08,052 INFO L85 PathProgramCache]: Analyzing trace with hash 941913210, now seen corresponding path program 9 times [2022-12-13 17:03:08,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:03:08,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415520996] [2022-12-13 17:03:08,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:03:08,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:03:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:03:08,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:03:08,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:03:08,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415520996] [2022-12-13 17:03:08,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415520996] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:03:08,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:03:08,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 17:03:08,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024287929] [2022-12-13 17:03:08,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:03:08,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 17:03:08,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:03:08,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 17:03:08,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:03:08,289 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 344 [2022-12-13 17:03:08,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 554 transitions, 9426 flow. Second operand has 10 states, 10 states have (on average 156.6) internal successors, (1566), 10 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:03:08,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:03:08,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 344 [2022-12-13 17:03:08,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:03:24,352 INFO L130 PetriNetUnfolder]: 64892/103709 cut-off events. [2022-12-13 17:03:24,352 INFO L131 PetriNetUnfolder]: For 1377216/1409993 co-relation queries the response was YES. [2022-12-13 17:03:24,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606490 conditions, 103709 events. 64892/103709 cut-off events. For 1377216/1409993 co-relation queries the response was YES. Maximal size of possible extension queue 4798. Compared 942911 event pairs, 10461 based on Foata normal form. 7452/107981 useless extension candidates. Maximal degree in co-relation 606450. Up to 26867 conditions per place. [2022-12-13 17:03:25,444 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 315 selfloop transitions, 603 changer transitions 0/941 dead transitions. [2022-12-13 17:03:25,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 941 transitions, 16936 flow [2022-12-13 17:03:25,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 17:03:25,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 17:03:25,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2684 transitions. [2022-12-13 17:03:25,448 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4876453488372093 [2022-12-13 17:03:25,448 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2684 transitions. [2022-12-13 17:03:25,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2684 transitions. [2022-12-13 17:03:25,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:03:25,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2684 transitions. [2022-12-13 17:03:25,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 167.75) internal successors, (2684), 16 states have internal predecessors, (2684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:03:25,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 344.0) internal successors, (5848), 17 states have internal predecessors, (5848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:03:25,456 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 344.0) internal successors, (5848), 17 states have internal predecessors, (5848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:03:25,456 INFO L175 Difference]: Start difference. First operand has 139 places, 554 transitions, 9426 flow. Second operand 16 states and 2684 transitions. [2022-12-13 17:03:25,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 941 transitions, 16936 flow [2022-12-13 17:03:35,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 941 transitions, 16652 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-12-13 17:03:35,135 INFO L231 Difference]: Finished difference. Result has 155 places, 816 transitions, 16490 flow [2022-12-13 17:03:35,135 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=9267, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=347, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=16490, PETRI_PLACES=155, PETRI_TRANSITIONS=816} [2022-12-13 17:03:35,136 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 76 predicate places. [2022-12-13 17:03:35,136 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 816 transitions, 16490 flow [2022-12-13 17:03:35,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 156.6) internal successors, (1566), 10 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:03:35,136 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:03:35,136 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:03:35,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 17:03:35,137 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:03:35,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:03:35,137 INFO L85 PathProgramCache]: Analyzing trace with hash 951546134, now seen corresponding path program 10 times [2022-12-13 17:03:35,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:03:35,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741632614] [2022-12-13 17:03:35,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:03:35,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:03:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:03:35,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:03:35,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:03:35,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741632614] [2022-12-13 17:03:35,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741632614] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:03:35,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:03:35,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:03:35,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042446833] [2022-12-13 17:03:35,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:03:35,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:03:35,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:03:35,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:03:35,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:03:35,351 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 344 [2022-12-13 17:03:35,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 816 transitions, 16490 flow. Second operand has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:03:35,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:03:35,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 344 [2022-12-13 17:03:35,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:03:53,678 INFO L130 PetriNetUnfolder]: 63657/101733 cut-off events. [2022-12-13 17:03:53,678 INFO L131 PetriNetUnfolder]: For 1733452/1756298 co-relation queries the response was YES. [2022-12-13 17:03:54,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 660247 conditions, 101733 events. 63657/101733 cut-off events. For 1733452/1756298 co-relation queries the response was YES. Maximal size of possible extension queue 4738. Compared 915087 event pairs, 21394 based on Foata normal form. 3154/101756 useless extension candidates. Maximal degree in co-relation 660202. Up to 82432 conditions per place. [2022-12-13 17:03:54,706 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 605 selfloop transitions, 208 changer transitions 23/859 dead transitions. [2022-12-13 17:03:54,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 859 transitions, 18407 flow [2022-12-13 17:03:54,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:03:54,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 17:03:54,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1172 transitions. [2022-12-13 17:03:54,708 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4867109634551495 [2022-12-13 17:03:54,709 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1172 transitions. [2022-12-13 17:03:54,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1172 transitions. [2022-12-13 17:03:54,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:03:54,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1172 transitions. [2022-12-13 17:03:54,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 167.42857142857142) internal successors, (1172), 7 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:03:54,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 344.0) internal successors, (2752), 8 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:03:54,712 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 344.0) internal successors, (2752), 8 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:03:54,712 INFO L175 Difference]: Start difference. First operand has 155 places, 816 transitions, 16490 flow. Second operand 7 states and 1172 transitions. [2022-12-13 17:03:54,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 859 transitions, 18407 flow [2022-12-13 17:04:07,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 859 transitions, 18269 flow, removed 65 selfloop flow, removed 2 redundant places. [2022-12-13 17:04:07,547 INFO L231 Difference]: Finished difference. Result has 162 places, 795 transitions, 16685 flow [2022-12-13 17:04:07,547 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=15670, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=785, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16685, PETRI_PLACES=162, PETRI_TRANSITIONS=795} [2022-12-13 17:04:07,548 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 83 predicate places. [2022-12-13 17:04:07,548 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 795 transitions, 16685 flow [2022-12-13 17:04:07,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:04:07,548 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:04:07,548 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:04:07,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 17:04:07,548 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:04:07,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:04:07,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1490773540, now seen corresponding path program 11 times [2022-12-13 17:04:07,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:04:07,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953618065] [2022-12-13 17:04:07,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:04:07,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:04:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:04:07,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:04:07,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:04:07,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953618065] [2022-12-13 17:04:07,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953618065] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:04:07,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:04:07,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:04:07,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581752546] [2022-12-13 17:04:07,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:04:07,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:04:07,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:04:07,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:04:07,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:04:07,722 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 344 [2022-12-13 17:04:07,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 795 transitions, 16685 flow. Second operand has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:04:07,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:04:07,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 344 [2022-12-13 17:04:07,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:04:22,610 INFO L130 PetriNetUnfolder]: 48136/79606 cut-off events. [2022-12-13 17:04:22,611 INFO L131 PetriNetUnfolder]: For 1361442/1388744 co-relation queries the response was YES. [2022-12-13 17:04:23,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510719 conditions, 79606 events. 48136/79606 cut-off events. For 1361442/1388744 co-relation queries the response was YES. Maximal size of possible extension queue 3671. Compared 727379 event pairs, 15519 based on Foata normal form. 3766/81071 useless extension candidates. Maximal degree in co-relation 510670. Up to 64413 conditions per place. [2022-12-13 17:04:23,386 INFO L137 encePairwiseOnDemand]: 333/344 looper letters, 619 selfloop transitions, 175 changer transitions 0/812 dead transitions. [2022-12-13 17:04:23,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 812 transitions, 17505 flow [2022-12-13 17:04:23,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:04:23,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 17:04:23,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1183 transitions. [2022-12-13 17:04:23,388 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49127906976744184 [2022-12-13 17:04:23,389 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1183 transitions. [2022-12-13 17:04:23,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1183 transitions. [2022-12-13 17:04:23,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:04:23,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1183 transitions. [2022-12-13 17:04:23,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:04:23,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 344.0) internal successors, (2752), 8 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:04:23,395 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 344.0) internal successors, (2752), 8 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:04:23,395 INFO L175 Difference]: Start difference. First operand has 162 places, 795 transitions, 16685 flow. Second operand 7 states and 1183 transitions. [2022-12-13 17:04:23,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 812 transitions, 17505 flow [2022-12-13 17:04:31,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 812 transitions, 17270 flow, removed 28 selfloop flow, removed 8 redundant places. [2022-12-13 17:04:31,283 INFO L231 Difference]: Finished difference. Result has 149 places, 744 transitions, 15494 flow [2022-12-13 17:04:31,283 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=14363, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15494, PETRI_PLACES=149, PETRI_TRANSITIONS=744} [2022-12-13 17:04:31,283 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 70 predicate places. [2022-12-13 17:04:31,283 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 744 transitions, 15494 flow [2022-12-13 17:04:31,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:04:31,284 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:04:31,284 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:04:31,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 17:04:31,285 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:04:31,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:04:31,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1267983024, now seen corresponding path program 12 times [2022-12-13 17:04:31,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:04:31,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185989725] [2022-12-13 17:04:31,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:04:31,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:04:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:04:31,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:04:31,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:04:31,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185989725] [2022-12-13 17:04:31,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185989725] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:04:31,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:04:31,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:04:31,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262169158] [2022-12-13 17:04:31,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:04:31,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:04:31,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:04:31,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:04:31,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:04:31,441 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 344 [2022-12-13 17:04:31,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 744 transitions, 15494 flow. Second operand has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:04:31,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:04:31,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 344 [2022-12-13 17:04:31,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:04:45,356 INFO L130 PetriNetUnfolder]: 46740/78381 cut-off events. [2022-12-13 17:04:45,356 INFO L131 PetriNetUnfolder]: For 1274573/1316791 co-relation queries the response was YES. [2022-12-13 17:04:45,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497824 conditions, 78381 events. 46740/78381 cut-off events. For 1274573/1316791 co-relation queries the response was YES. Maximal size of possible extension queue 3580. Compared 732781 event pairs, 6723 based on Foata normal form. 12034/87968 useless extension candidates. Maximal degree in co-relation 497779. Up to 23999 conditions per place. [2022-12-13 17:04:46,084 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 221 selfloop transitions, 682 changer transitions 1/922 dead transitions. [2022-12-13 17:04:46,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 922 transitions, 19601 flow [2022-12-13 17:04:46,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:04:46,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 17:04:46,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1076 transitions. [2022-12-13 17:04:46,086 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5213178294573644 [2022-12-13 17:04:46,086 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1076 transitions. [2022-12-13 17:04:46,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1076 transitions. [2022-12-13 17:04:46,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:04:46,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1076 transitions. [2022-12-13 17:04:46,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 179.33333333333334) internal successors, (1076), 6 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:04:46,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 344.0) internal successors, (2408), 7 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:04:46,091 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 344.0) internal successors, (2408), 7 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:04:46,091 INFO L175 Difference]: Start difference. First operand has 149 places, 744 transitions, 15494 flow. Second operand 6 states and 1076 transitions. [2022-12-13 17:04:46,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 922 transitions, 19601 flow [2022-12-13 17:04:52,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 922 transitions, 19572 flow, removed 12 selfloop flow, removed 1 redundant places. [2022-12-13 17:04:52,639 INFO L231 Difference]: Finished difference. Result has 155 places, 815 transitions, 18802 flow [2022-12-13 17:04:52,639 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=15473, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=610, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=18802, PETRI_PLACES=155, PETRI_TRANSITIONS=815} [2022-12-13 17:04:52,639 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 76 predicate places. [2022-12-13 17:04:52,639 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 815 transitions, 18802 flow [2022-12-13 17:04:52,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:04:52,640 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:04:52,640 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:04:52,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 17:04:52,640 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:04:52,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:04:52,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1322386420, now seen corresponding path program 13 times [2022-12-13 17:04:52,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:04:52,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202234541] [2022-12-13 17:04:52,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:04:52,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:04:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:04:52,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:04:52,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:04:52,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202234541] [2022-12-13 17:04:52,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202234541] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:04:52,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:04:52,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:04:52,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285766115] [2022-12-13 17:04:52,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:04:52,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:04:52,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:04:52,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:04:52,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:04:52,797 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 344 [2022-12-13 17:04:52,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 815 transitions, 18802 flow. Second operand has 7 states, 7 states have (on average 158.14285714285714) internal successors, (1107), 7 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:04:52,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:04:52,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 344 [2022-12-13 17:04:52,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:05:07,870 INFO L130 PetriNetUnfolder]: 46282/77654 cut-off events. [2022-12-13 17:05:07,870 INFO L131 PetriNetUnfolder]: For 1520200/1572514 co-relation queries the response was YES. [2022-12-13 17:05:08,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536956 conditions, 77654 events. 46282/77654 cut-off events. For 1520200/1572514 co-relation queries the response was YES. Maximal size of possible extension queue 3477. Compared 720430 event pairs, 9381 based on Foata normal form. 11530/86992 useless extension candidates. Maximal degree in co-relation 536908. Up to 42353 conditions per place. [2022-12-13 17:05:08,833 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 459 selfloop transitions, 471 changer transitions 3/951 dead transitions. [2022-12-13 17:05:08,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 951 transitions, 22351 flow [2022-12-13 17:05:08,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 17:05:08,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 17:05:08,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1532 transitions. [2022-12-13 17:05:08,835 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49483204134366926 [2022-12-13 17:05:08,835 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1532 transitions. [2022-12-13 17:05:08,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1532 transitions. [2022-12-13 17:05:08,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:05:08,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1532 transitions. [2022-12-13 17:05:08,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 170.22222222222223) internal successors, (1532), 9 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:05:08,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 344.0) internal successors, (3440), 10 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:05:08,839 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 344.0) internal successors, (3440), 10 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:05:08,839 INFO L175 Difference]: Start difference. First operand has 155 places, 815 transitions, 18802 flow. Second operand 9 states and 1532 transitions. [2022-12-13 17:05:08,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 951 transitions, 22351 flow [2022-12-13 17:05:15,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 951 transitions, 21272 flow, removed 10 selfloop flow, removed 5 redundant places. [2022-12-13 17:05:15,618 INFO L231 Difference]: Finished difference. Result has 159 places, 846 transitions, 19665 flow [2022-12-13 17:05:15,619 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=17765, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=814, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=438, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19665, PETRI_PLACES=159, PETRI_TRANSITIONS=846} [2022-12-13 17:05:15,619 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 80 predicate places. [2022-12-13 17:05:15,619 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 846 transitions, 19665 flow [2022-12-13 17:05:15,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 158.14285714285714) internal successors, (1107), 7 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:05:15,619 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:05:15,619 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:05:15,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 17:05:15,620 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:05:15,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:15,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1768482480, now seen corresponding path program 14 times [2022-12-13 17:05:15,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:15,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139324889] [2022-12-13 17:05:15,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:15,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:15,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:05:15,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:15,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139324889] [2022-12-13 17:05:15,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139324889] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:15,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:05:15,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:05:15,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944590385] [2022-12-13 17:05:15,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:15,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:05:15,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:15,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:05:15,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:05:15,759 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 344 [2022-12-13 17:05:15,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 846 transitions, 19665 flow. Second operand has 7 states, 7 states have (on average 160.14285714285714) internal successors, (1121), 7 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:05:15,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:05:15,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 344 [2022-12-13 17:05:15,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:05:32,029 INFO L130 PetriNetUnfolder]: 46461/78806 cut-off events. [2022-12-13 17:05:32,029 INFO L131 PetriNetUnfolder]: For 1502061/1559013 co-relation queries the response was YES. [2022-12-13 17:05:32,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 526864 conditions, 78806 events. 46461/78806 cut-off events. For 1502061/1559013 co-relation queries the response was YES. Maximal size of possible extension queue 3482. Compared 750271 event pairs, 5910 based on Foata normal form. 15092/91658 useless extension candidates. Maximal degree in co-relation 526817. Up to 22315 conditions per place. [2022-12-13 17:05:32,755 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 271 selfloop transitions, 814 changer transitions 6/1109 dead transitions. [2022-12-13 17:05:32,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 1109 transitions, 25790 flow [2022-12-13 17:05:32,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 17:05:32,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 17:05:32,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1429 transitions. [2022-12-13 17:05:32,757 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5192587209302325 [2022-12-13 17:05:32,757 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1429 transitions. [2022-12-13 17:05:32,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1429 transitions. [2022-12-13 17:05:32,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:05:32,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1429 transitions. [2022-12-13 17:05:32,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 178.625) internal successors, (1429), 8 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:05:32,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 344.0) internal successors, (3096), 9 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:05:32,760 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 344.0) internal successors, (3096), 9 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:05:32,761 INFO L175 Difference]: Start difference. First operand has 159 places, 846 transitions, 19665 flow. Second operand 8 states and 1429 transitions. [2022-12-13 17:05:32,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 1109 transitions, 25790 flow [2022-12-13 17:05:39,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 1109 transitions, 25168 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-12-13 17:05:39,450 INFO L231 Difference]: Finished difference. Result has 165 places, 951 transitions, 23484 flow [2022-12-13 17:05:39,451 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=19144, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=846, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=705, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=23484, PETRI_PLACES=165, PETRI_TRANSITIONS=951} [2022-12-13 17:05:39,451 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 86 predicate places. [2022-12-13 17:05:39,451 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 951 transitions, 23484 flow [2022-12-13 17:05:39,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 160.14285714285714) internal successors, (1121), 7 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:05:39,451 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:05:39,451 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:05:39,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 17:05:39,452 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:05:39,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:39,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1129440846, now seen corresponding path program 15 times [2022-12-13 17:05:39,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:39,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146952234] [2022-12-13 17:05:39,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:39,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:39,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:05:39,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:39,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146952234] [2022-12-13 17:05:39,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146952234] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:39,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:05:39,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:05:39,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386719428] [2022-12-13 17:05:39,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:39,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:05:39,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:39,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:05:39,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:05:39,671 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 344 [2022-12-13 17:05:39,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 951 transitions, 23484 flow. Second operand has 8 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:05:39,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:05:39,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 344 [2022-12-13 17:05:39,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:05:57,256 INFO L130 PetriNetUnfolder]: 46816/80633 cut-off events. [2022-12-13 17:05:57,256 INFO L131 PetriNetUnfolder]: For 1717801/1764069 co-relation queries the response was YES. [2022-12-13 17:05:57,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 566274 conditions, 80633 events. 46816/80633 cut-off events. For 1717801/1764069 co-relation queries the response was YES. Maximal size of possible extension queue 3686. Compared 785165 event pairs, 4385 based on Foata normal form. 16144/94101 useless extension candidates. Maximal degree in co-relation 566225. Up to 23857 conditions per place. [2022-12-13 17:05:58,093 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 172 selfloop transitions, 1054 changer transitions 10/1254 dead transitions. [2022-12-13 17:05:58,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 1254 transitions, 31380 flow [2022-12-13 17:05:58,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 17:05:58,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 17:05:58,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1591 transitions. [2022-12-13 17:05:58,096 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2022-12-13 17:05:58,096 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1591 transitions. [2022-12-13 17:05:58,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1591 transitions. [2022-12-13 17:05:58,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:05:58,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1591 transitions. [2022-12-13 17:05:58,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 176.77777777777777) internal successors, (1591), 9 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:05:58,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 344.0) internal successors, (3440), 10 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:05:58,100 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 344.0) internal successors, (3440), 10 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:05:58,100 INFO L175 Difference]: Start difference. First operand has 165 places, 951 transitions, 23484 flow. Second operand 9 states and 1591 transitions. [2022-12-13 17:05:58,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 1254 transitions, 31380 flow [2022-12-13 17:06:07,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 1254 transitions, 30159 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 17:06:07,897 INFO L231 Difference]: Finished difference. Result has 172 places, 1129 transitions, 29135 flow [2022-12-13 17:06:07,898 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=22479, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=951, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=876, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=29135, PETRI_PLACES=172, PETRI_TRANSITIONS=1129} [2022-12-13 17:06:07,898 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 93 predicate places. [2022-12-13 17:06:07,898 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 1129 transitions, 29135 flow [2022-12-13 17:06:07,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:06:07,898 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:06:07,898 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:06:07,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 17:06:07,898 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:06:07,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:07,899 INFO L85 PathProgramCache]: Analyzing trace with hash 424892812, now seen corresponding path program 16 times [2022-12-13 17:06:07,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:07,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960014873] [2022-12-13 17:06:07,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:07,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:08,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:06:08,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:08,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960014873] [2022-12-13 17:06:08,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960014873] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:06:08,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:06:08,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 17:06:08,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61896814] [2022-12-13 17:06:08,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:06:08,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 17:06:08,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:08,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 17:06:08,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:06:08,075 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 344 [2022-12-13 17:06:08,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 1129 transitions, 29135 flow. Second operand has 10 states, 10 states have (on average 156.6) internal successors, (1566), 10 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:06:08,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:06:08,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 344 [2022-12-13 17:06:08,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:06:28,600 INFO L130 PetriNetUnfolder]: 48073/83722 cut-off events. [2022-12-13 17:06:28,601 INFO L131 PetriNetUnfolder]: For 1998688/2049251 co-relation queries the response was YES. [2022-12-13 17:06:29,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607884 conditions, 83722 events. 48073/83722 cut-off events. For 1998688/2049251 co-relation queries the response was YES. Maximal size of possible extension queue 3967. Compared 827920 event pairs, 8246 based on Foata normal form. 13292/94533 useless extension candidates. Maximal degree in co-relation 607833. Up to 28477 conditions per place. [2022-12-13 17:06:29,682 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 547 selfloop transitions, 942 changer transitions 4/1511 dead transitions. [2022-12-13 17:06:29,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 1511 transitions, 38322 flow [2022-12-13 17:06:29,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 17:06:29,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 17:06:29,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3218 transitions. [2022-12-13 17:06:29,686 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4923500611995104 [2022-12-13 17:06:29,686 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3218 transitions. [2022-12-13 17:06:29,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3218 transitions. [2022-12-13 17:06:29,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:06:29,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3218 transitions. [2022-12-13 17:06:29,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 169.3684210526316) internal successors, (3218), 19 states have internal predecessors, (3218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:06:29,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 344.0) internal successors, (6880), 20 states have internal predecessors, (6880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:06:29,694 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 344.0) internal successors, (6880), 20 states have internal predecessors, (6880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:06:29,694 INFO L175 Difference]: Start difference. First operand has 172 places, 1129 transitions, 29135 flow. Second operand 19 states and 3218 transitions. [2022-12-13 17:06:29,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 1511 transitions, 38322 flow [2022-12-13 17:06:42,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 1511 transitions, 36658 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 17:06:42,920 INFO L231 Difference]: Finished difference. Result has 189 places, 1303 transitions, 34462 flow [2022-12-13 17:06:42,921 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=27713, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=768, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=34462, PETRI_PLACES=189, PETRI_TRANSITIONS=1303} [2022-12-13 17:06:42,921 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 110 predicate places. [2022-12-13 17:06:42,921 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 1303 transitions, 34462 flow [2022-12-13 17:06:42,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 156.6) internal successors, (1566), 10 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:06:42,922 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:06:42,922 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:06:42,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 17:06:42,922 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:06:42,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:42,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1379253082, now seen corresponding path program 17 times [2022-12-13 17:06:42,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:42,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240826090] [2022-12-13 17:06:42,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:42,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:42,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:43,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:06:43,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:43,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240826090] [2022-12-13 17:06:43,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240826090] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:06:43,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:06:43,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:06:43,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750822860] [2022-12-13 17:06:43,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:06:43,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:06:43,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:43,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:06:43,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:06:43,129 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 344 [2022-12-13 17:06:43,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 1303 transitions, 34462 flow. Second operand has 8 states, 8 states have (on average 157.5) internal successors, (1260), 8 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:06:43,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:06:43,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 344 [2022-12-13 17:06:43,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:07:04,789 INFO L130 PetriNetUnfolder]: 45974/80419 cut-off events. [2022-12-13 17:07:04,790 INFO L131 PetriNetUnfolder]: For 2024202/2067821 co-relation queries the response was YES. [2022-12-13 17:07:05,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588365 conditions, 80419 events. 45974/80419 cut-off events. For 2024202/2067821 co-relation queries the response was YES. Maximal size of possible extension queue 3569. Compared 793692 event pairs, 14521 based on Foata normal form. 4000/82683 useless extension candidates. Maximal degree in co-relation 588311. Up to 64149 conditions per place. [2022-12-13 17:07:05,572 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 1111 selfloop transitions, 288 changer transitions 14/1431 dead transitions. [2022-12-13 17:07:05,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 1431 transitions, 39443 flow [2022-12-13 17:07:05,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 17:07:05,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 17:07:05,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1985 transitions. [2022-12-13 17:07:05,575 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4808624031007752 [2022-12-13 17:07:05,575 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1985 transitions. [2022-12-13 17:07:05,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1985 transitions. [2022-12-13 17:07:05,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:07:05,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1985 transitions. [2022-12-13 17:07:05,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 165.41666666666666) internal successors, (1985), 12 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:05,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 344.0) internal successors, (4472), 13 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:05,580 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 344.0) internal successors, (4472), 13 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:05,580 INFO L175 Difference]: Start difference. First operand has 189 places, 1303 transitions, 34462 flow. Second operand 12 states and 1985 transitions. [2022-12-13 17:07:05,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 1431 transitions, 39443 flow [2022-12-13 17:07:18,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 1431 transitions, 39378 flow, removed 11 selfloop flow, removed 2 redundant places. [2022-12-13 17:07:18,283 INFO L231 Difference]: Finished difference. Result has 199 places, 1328 transitions, 35877 flow [2022-12-13 17:07:18,284 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=34292, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1011, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=35877, PETRI_PLACES=199, PETRI_TRANSITIONS=1328} [2022-12-13 17:07:18,284 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 120 predicate places. [2022-12-13 17:07:18,284 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 1328 transitions, 35877 flow [2022-12-13 17:07:18,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 157.5) internal successors, (1260), 8 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:18,285 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:07:18,285 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:07:18,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 17:07:18,285 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:07:18,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:07:18,285 INFO L85 PathProgramCache]: Analyzing trace with hash 333040854, now seen corresponding path program 18 times [2022-12-13 17:07:18,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:07:18,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268546161] [2022-12-13 17:07:18,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:18,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:07:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:18,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:07:18,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:07:18,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268546161] [2022-12-13 17:07:18,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268546161] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:07:18,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:07:18,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:07:18,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539115563] [2022-12-13 17:07:18,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:07:18,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:07:18,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:07:18,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:07:18,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:07:18,443 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 344 [2022-12-13 17:07:18,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 1328 transitions, 35877 flow. Second operand has 7 states, 7 states have (on average 160.14285714285714) internal successors, (1121), 7 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:18,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:07:18,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 344 [2022-12-13 17:07:18,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:07:33,961 INFO L130 PetriNetUnfolder]: 28822/52401 cut-off events. [2022-12-13 17:07:33,961 INFO L131 PetriNetUnfolder]: For 1134414/1160039 co-relation queries the response was YES. [2022-12-13 17:07:34,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390226 conditions, 52401 events. 28822/52401 cut-off events. For 1134414/1160039 co-relation queries the response was YES. Maximal size of possible extension queue 2240. Compared 508930 event pairs, 3719 based on Foata normal form. 10314/61790 useless extension candidates. Maximal degree in co-relation 390171. Up to 12940 conditions per place. [2022-12-13 17:07:34,446 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 254 selfloop transitions, 1338 changer transitions 58/1668 dead transitions. [2022-12-13 17:07:34,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 1668 transitions, 46210 flow [2022-12-13 17:07:34,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 17:07:34,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 17:07:34,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1416 transitions. [2022-12-13 17:07:34,448 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5145348837209303 [2022-12-13 17:07:34,448 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1416 transitions. [2022-12-13 17:07:34,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1416 transitions. [2022-12-13 17:07:34,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:07:34,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1416 transitions. [2022-12-13 17:07:34,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:34,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 344.0) internal successors, (3096), 9 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:34,452 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 344.0) internal successors, (3096), 9 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:34,452 INFO L175 Difference]: Start difference. First operand has 199 places, 1328 transitions, 35877 flow. Second operand 8 states and 1416 transitions. [2022-12-13 17:07:34,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 1668 transitions, 46210 flow [2022-12-13 17:07:43,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 1668 transitions, 45683 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-13 17:07:43,095 INFO L231 Difference]: Finished difference. Result has 201 places, 1489 transitions, 43140 flow [2022-12-13 17:07:43,095 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=32705, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1067, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=43140, PETRI_PLACES=201, PETRI_TRANSITIONS=1489} [2022-12-13 17:07:43,096 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 122 predicate places. [2022-12-13 17:07:43,096 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 1489 transitions, 43140 flow [2022-12-13 17:07:43,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 160.14285714285714) internal successors, (1121), 7 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:43,096 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:07:43,096 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:07:43,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 17:07:43,097 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:07:43,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:07:43,097 INFO L85 PathProgramCache]: Analyzing trace with hash -146700464, now seen corresponding path program 19 times [2022-12-13 17:07:43,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:07:43,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614013945] [2022-12-13 17:07:43,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:43,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:07:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:43,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:07:43,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:07:43,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614013945] [2022-12-13 17:07:43,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614013945] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:07:43,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:07:43,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:07:43,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012033905] [2022-12-13 17:07:43,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:07:43,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:07:43,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:07:43,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:07:43,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:07:43,412 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 344 [2022-12-13 17:07:43,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 1489 transitions, 43140 flow. Second operand has 8 states, 8 states have (on average 154.625) internal successors, (1237), 8 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:43,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:07:43,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 344 [2022-12-13 17:07:43,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:08:03,089 INFO L130 PetriNetUnfolder]: 33766/59389 cut-off events. [2022-12-13 17:08:03,090 INFO L131 PetriNetUnfolder]: For 1435411/1455723 co-relation queries the response was YES. [2022-12-13 17:08:03,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466279 conditions, 59389 events. 33766/59389 cut-off events. For 1435411/1455723 co-relation queries the response was YES. Maximal size of possible extension queue 2429. Compared 558480 event pairs, 7819 based on Foata normal form. 4536/62931 useless extension candidates. Maximal degree in co-relation 466221. Up to 33863 conditions per place. [2022-12-13 17:08:03,746 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 741 selfloop transitions, 883 changer transitions 6/1647 dead transitions. [2022-12-13 17:08:03,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 1647 transitions, 48527 flow [2022-12-13 17:08:03,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 17:08:03,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 17:08:03,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1997 transitions. [2022-12-13 17:08:03,749 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48376937984496127 [2022-12-13 17:08:03,749 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1997 transitions. [2022-12-13 17:08:03,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1997 transitions. [2022-12-13 17:08:03,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:08:03,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1997 transitions. [2022-12-13 17:08:03,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 166.41666666666666) internal successors, (1997), 12 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:08:03,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 344.0) internal successors, (4472), 13 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:08:03,755 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 344.0) internal successors, (4472), 13 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:08:03,755 INFO L175 Difference]: Start difference. First operand has 201 places, 1489 transitions, 43140 flow. Second operand 12 states and 1997 transitions. [2022-12-13 17:08:03,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 1647 transitions, 48527 flow [2022-12-13 17:08:15,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 1647 transitions, 48075 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-12-13 17:08:15,533 INFO L231 Difference]: Finished difference. Result has 211 places, 1519 transitions, 45820 flow [2022-12-13 17:08:15,534 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=42712, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=847, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=642, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=45820, PETRI_PLACES=211, PETRI_TRANSITIONS=1519} [2022-12-13 17:08:15,534 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 132 predicate places. [2022-12-13 17:08:15,534 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 1519 transitions, 45820 flow [2022-12-13 17:08:15,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 154.625) internal successors, (1237), 8 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:08:15,534 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:08:15,535 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:08:15,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 17:08:15,535 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:08:15,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:08:15,535 INFO L85 PathProgramCache]: Analyzing trace with hash 928006162, now seen corresponding path program 20 times [2022-12-13 17:08:15,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:08:15,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813795151] [2022-12-13 17:08:15,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:08:15,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:08:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:15,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:08:15,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:08:15,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813795151] [2022-12-13 17:08:15,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813795151] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:08:15,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:08:15,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 17:08:15,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483436812] [2022-12-13 17:08:15,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:08:15,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 17:08:15,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:08:15,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 17:08:15,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:08:15,725 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 344 [2022-12-13 17:08:15,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 1519 transitions, 45820 flow. Second operand has 10 states, 10 states have (on average 156.6) internal successors, (1566), 10 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:08:15,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:08:15,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 344 [2022-12-13 17:08:15,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:08:33,867 INFO L130 PetriNetUnfolder]: 29373/53797 cut-off events. [2022-12-13 17:08:33,867 INFO L131 PetriNetUnfolder]: For 1448862/1466306 co-relation queries the response was YES. [2022-12-13 17:08:34,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432729 conditions, 53797 events. 29373/53797 cut-off events. For 1448862/1466306 co-relation queries the response was YES. Maximal size of possible extension queue 2346. Compared 525292 event pairs, 8863 based on Foata normal form. 1976/54943 useless extension candidates. Maximal degree in co-relation 432670. Up to 42522 conditions per place. [2022-12-13 17:08:34,433 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 1361 selfloop transitions, 366 changer transitions 15/1760 dead transitions. [2022-12-13 17:08:34,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 1760 transitions, 53949 flow [2022-12-13 17:08:34,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 17:08:34,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 17:08:34,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3145 transitions. [2022-12-13 17:08:34,437 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4811811505507956 [2022-12-13 17:08:34,437 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3145 transitions. [2022-12-13 17:08:34,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3145 transitions. [2022-12-13 17:08:34,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:08:34,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3145 transitions. [2022-12-13 17:08:34,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 165.52631578947367) internal successors, (3145), 19 states have internal predecessors, (3145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:08:34,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 344.0) internal successors, (6880), 20 states have internal predecessors, (6880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:08:34,443 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 344.0) internal successors, (6880), 20 states have internal predecessors, (6880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:08:34,443 INFO L175 Difference]: Start difference. First operand has 211 places, 1519 transitions, 45820 flow. Second operand 19 states and 3145 transitions. [2022-12-13 17:08:34,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 1760 transitions, 53949 flow [2022-12-13 17:08:45,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 1760 transitions, 52738 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 17:08:45,275 INFO L231 Difference]: Finished difference. Result has 224 places, 1582 transitions, 47623 flow [2022-12-13 17:08:45,276 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=44716, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=299, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=47623, PETRI_PLACES=224, PETRI_TRANSITIONS=1582} [2022-12-13 17:08:45,276 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 145 predicate places. [2022-12-13 17:08:45,276 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 1582 transitions, 47623 flow [2022-12-13 17:08:45,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 156.6) internal successors, (1566), 10 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:08:45,276 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:08:45,277 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:08:45,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 17:08:45,277 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:08:45,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:08:45,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1232810776, now seen corresponding path program 21 times [2022-12-13 17:08:45,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:08:45,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394921571] [2022-12-13 17:08:45,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:08:45,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:08:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:45,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:08:45,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:08:45,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394921571] [2022-12-13 17:08:45,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394921571] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:08:45,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:08:45,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:08:45,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269859433] [2022-12-13 17:08:45,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:08:45,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:08:45,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:08:45,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:08:45,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:08:45,423 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 344 [2022-12-13 17:08:45,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 1582 transitions, 47623 flow. Second operand has 8 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:08:45,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:08:45,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 344 [2022-12-13 17:08:45,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:09:04,288 INFO L130 PetriNetUnfolder]: 28225/51964 cut-off events. [2022-12-13 17:09:04,288 INFO L131 PetriNetUnfolder]: For 1344725/1370631 co-relation queries the response was YES. [2022-12-13 17:09:04,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419439 conditions, 51964 events. 28225/51964 cut-off events. For 1344725/1370631 co-relation queries the response was YES. Maximal size of possible extension queue 2372. Compared 511962 event pairs, 2448 based on Foata normal form. 7712/58737 useless extension candidates. Maximal degree in co-relation 419379. Up to 13065 conditions per place. [2022-12-13 17:09:04,854 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 188 selfloop transitions, 1533 changer transitions 29/1768 dead transitions. [2022-12-13 17:09:04,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 1768 transitions, 53785 flow [2022-12-13 17:09:04,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 17:09:04,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 17:09:04,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1591 transitions. [2022-12-13 17:09:04,856 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2022-12-13 17:09:04,857 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1591 transitions. [2022-12-13 17:09:04,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1591 transitions. [2022-12-13 17:09:04,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:09:04,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1591 transitions. [2022-12-13 17:09:04,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 176.77777777777777) internal successors, (1591), 9 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:09:04,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 344.0) internal successors, (3440), 10 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:09:04,860 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 344.0) internal successors, (3440), 10 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:09:04,860 INFO L175 Difference]: Start difference. First operand has 224 places, 1582 transitions, 47623 flow. Second operand 9 states and 1591 transitions. [2022-12-13 17:09:04,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 1768 transitions, 53785 flow [2022-12-13 17:09:16,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 1768 transitions, 53264 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-12-13 17:09:16,486 INFO L231 Difference]: Finished difference. Result has 225 places, 1612 transitions, 51366 flow [2022-12-13 17:09:16,487 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=47075, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1473, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=51366, PETRI_PLACES=225, PETRI_TRANSITIONS=1612} [2022-12-13 17:09:16,487 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 146 predicate places. [2022-12-13 17:09:16,487 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 1612 transitions, 51366 flow [2022-12-13 17:09:16,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:09:16,488 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:09:16,488 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:09:16,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-13 17:09:16,488 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:09:16,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:09:16,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1481594346, now seen corresponding path program 22 times [2022-12-13 17:09:16,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:09:16,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467476802] [2022-12-13 17:09:16,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:09:16,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:09:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:09:16,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:09:16,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:09:16,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467476802] [2022-12-13 17:09:16,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467476802] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:09:16,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:09:16,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 17:09:16,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168816944] [2022-12-13 17:09:16,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:09:16,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 17:09:16,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:09:16,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 17:09:16,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-12-13 17:09:16,671 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 344 [2022-12-13 17:09:16,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 1612 transitions, 51366 flow. Second operand has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:09:16,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:09:16,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 344 [2022-12-13 17:09:16,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:09:37,012 INFO L130 PetriNetUnfolder]: 27337/50456 cut-off events. [2022-12-13 17:09:37,012 INFO L131 PetriNetUnfolder]: For 1529952/1553016 co-relation queries the response was YES. [2022-12-13 17:09:37,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437051 conditions, 50456 events. 27337/50456 cut-off events. For 1529952/1553016 co-relation queries the response was YES. Maximal size of possible extension queue 2560. Compared 497308 event pairs, 4833 based on Foata normal form. 6422/56062 useless extension candidates. Maximal degree in co-relation 436989. Up to 18203 conditions per place. [2022-12-13 17:09:37,516 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 624 selfloop transitions, 1130 changer transitions 188/1960 dead transitions. [2022-12-13 17:09:37,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 1960 transitions, 61575 flow [2022-12-13 17:09:37,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 17:09:37,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-13 17:09:37,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4036 transitions. [2022-12-13 17:09:37,520 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4888565891472868 [2022-12-13 17:09:37,520 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4036 transitions. [2022-12-13 17:09:37,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4036 transitions. [2022-12-13 17:09:37,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:09:37,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4036 transitions. [2022-12-13 17:09:37,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 168.16666666666666) internal successors, (4036), 24 states have internal predecessors, (4036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:09:37,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 344.0) internal successors, (8600), 25 states have internal predecessors, (8600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:09:37,529 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 344.0) internal successors, (8600), 25 states have internal predecessors, (8600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:09:37,529 INFO L175 Difference]: Start difference. First operand has 225 places, 1612 transitions, 51366 flow. Second operand 24 states and 4036 transitions. [2022-12-13 17:09:37,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 1960 transitions, 61575 flow [2022-12-13 17:09:51,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 1960 transitions, 60670 flow, removed 34 selfloop flow, removed 5 redundant places. [2022-12-13 17:09:51,123 INFO L231 Difference]: Finished difference. Result has 246 places, 1572 transitions, 51166 flow [2022-12-13 17:09:51,124 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=50518, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1035, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=51166, PETRI_PLACES=246, PETRI_TRANSITIONS=1572} [2022-12-13 17:09:51,124 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 167 predicate places. [2022-12-13 17:09:51,124 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 1572 transitions, 51166 flow [2022-12-13 17:09:51,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:09:51,125 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:09:51,125 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:09:51,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-13 17:09:51,125 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:09:51,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:09:51,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1306131256, now seen corresponding path program 23 times [2022-12-13 17:09:51,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:09:51,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857708085] [2022-12-13 17:09:51,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:09:51,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:09:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:09:51,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:09:51,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:09:51,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857708085] [2022-12-13 17:09:51,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857708085] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:09:51,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:09:51,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 17:09:51,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859621025] [2022-12-13 17:09:51,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:09:51,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 17:09:51,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:09:51,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 17:09:51,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:09:51,271 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 344 [2022-12-13 17:09:51,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 1572 transitions, 51166 flow. Second operand has 10 states, 10 states have (on average 158.6) internal successors, (1586), 10 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:09:51,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:09:51,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 344 [2022-12-13 17:09:51,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:10:10,357 INFO L130 PetriNetUnfolder]: 26033/48443 cut-off events. [2022-12-13 17:10:10,357 INFO L131 PetriNetUnfolder]: For 1499585/1521744 co-relation queries the response was YES. [2022-12-13 17:10:10,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 424150 conditions, 48443 events. 26033/48443 cut-off events. For 1499585/1521744 co-relation queries the response was YES. Maximal size of possible extension queue 2408. Compared 480655 event pairs, 2225 based on Foata normal form. 6578/54205 useless extension candidates. Maximal degree in co-relation 424087. Up to 13795 conditions per place. [2022-12-13 17:10:10,835 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 152 selfloop transitions, 1598 changer transitions 13/1781 dead transitions. [2022-12-13 17:10:10,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 1781 transitions, 58035 flow [2022-12-13 17:10:10,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 17:10:10,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 17:10:10,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2239 transitions. [2022-12-13 17:10:10,837 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5006708407871199 [2022-12-13 17:10:10,837 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2239 transitions. [2022-12-13 17:10:10,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2239 transitions. [2022-12-13 17:10:10,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:10:10,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2239 transitions. [2022-12-13 17:10:10,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 172.23076923076923) internal successors, (2239), 13 states have internal predecessors, (2239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:10:10,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 344.0) internal successors, (4816), 14 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:10:10,844 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 344.0) internal successors, (4816), 14 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:10:10,844 INFO L175 Difference]: Start difference. First operand has 246 places, 1572 transitions, 51166 flow. Second operand 13 states and 2239 transitions. [2022-12-13 17:10:10,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 1781 transitions, 58035 flow [2022-12-13 17:10:25,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 1781 transitions, 57650 flow, removed 20 selfloop flow, removed 9 redundant places. [2022-12-13 17:10:25,601 INFO L231 Difference]: Finished difference. Result has 250 places, 1650 transitions, 56025 flow [2022-12-13 17:10:25,602 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=50822, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1519, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=56025, PETRI_PLACES=250, PETRI_TRANSITIONS=1650} [2022-12-13 17:10:25,602 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 171 predicate places. [2022-12-13 17:10:25,602 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 1650 transitions, 56025 flow [2022-12-13 17:10:25,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 158.6) internal successors, (1586), 10 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:10:25,603 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:10:25,603 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:10:25,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-13 17:10:25,603 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:10:25,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:10:25,603 INFO L85 PathProgramCache]: Analyzing trace with hash -460442328, now seen corresponding path program 24 times [2022-12-13 17:10:25,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:10:25,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894361550] [2022-12-13 17:10:25,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:10:25,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:10:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:25,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:10:25,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:10:25,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894361550] [2022-12-13 17:10:25,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894361550] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:10:25,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:10:25,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 17:10:25,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668977850] [2022-12-13 17:10:25,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:10:25,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 17:10:25,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:10:25,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 17:10:25,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:10:25,844 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 344 [2022-12-13 17:10:25,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 1650 transitions, 56025 flow. Second operand has 10 states, 10 states have (on average 156.6) internal successors, (1566), 10 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:10:25,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:10:25,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 344 [2022-12-13 17:10:25,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:10:45,209 INFO L130 PetriNetUnfolder]: 23365/44334 cut-off events. [2022-12-13 17:10:45,209 INFO L131 PetriNetUnfolder]: For 1543671/1562140 co-relation queries the response was YES. [2022-12-13 17:10:45,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410995 conditions, 44334 events. 23365/44334 cut-off events. For 1543671/1562140 co-relation queries the response was YES. Maximal size of possible extension queue 2262. Compared 441278 event pairs, 2485 based on Foata normal form. 4714/48535 useless extension candidates. Maximal degree in co-relation 410931. Up to 12109 conditions per place. [2022-12-13 17:10:45,667 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 308 selfloop transitions, 1429 changer transitions 31/1786 dead transitions. [2022-12-13 17:10:45,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 1786 transitions, 60627 flow [2022-12-13 17:10:45,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 17:10:45,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 17:10:45,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2218 transitions. [2022-12-13 17:10:45,669 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49597495527728086 [2022-12-13 17:10:45,669 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2218 transitions. [2022-12-13 17:10:45,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2218 transitions. [2022-12-13 17:10:45,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:10:45,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2218 transitions. [2022-12-13 17:10:45,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 170.6153846153846) internal successors, (2218), 13 states have internal predecessors, (2218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:10:45,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 344.0) internal successors, (4816), 14 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:10:45,674 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 344.0) internal successors, (4816), 14 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:10:45,674 INFO L175 Difference]: Start difference. First operand has 250 places, 1650 transitions, 56025 flow. Second operand 13 states and 2218 transitions. [2022-12-13 17:10:45,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 1786 transitions, 60627 flow [2022-12-13 17:11:00,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 1786 transitions, 59149 flow, removed 76 selfloop flow, removed 3 redundant places. [2022-12-13 17:11:00,905 INFO L231 Difference]: Finished difference. Result has 260 places, 1607 transitions, 56529 flow [2022-12-13 17:11:00,907 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=53648, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1416, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=56529, PETRI_PLACES=260, PETRI_TRANSITIONS=1607} [2022-12-13 17:11:00,907 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 181 predicate places. [2022-12-13 17:11:00,907 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 1607 transitions, 56529 flow [2022-12-13 17:11:00,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 156.6) internal successors, (1566), 10 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:11:00,908 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:11:00,908 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:11:00,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-13 17:11:00,908 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:11:00,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:11:00,908 INFO L85 PathProgramCache]: Analyzing trace with hash -245969014, now seen corresponding path program 25 times [2022-12-13 17:11:00,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:11:00,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134481175] [2022-12-13 17:11:00,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:11:00,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:11:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:01,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:11:01,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:11:01,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134481175] [2022-12-13 17:11:01,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134481175] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:11:01,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:11:01,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 17:11:01,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142561715] [2022-12-13 17:11:01,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:11:01,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 17:11:01,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:11:01,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 17:11:01,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:11:01,086 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 344 [2022-12-13 17:11:01,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 1607 transitions, 56529 flow. Second operand has 10 states, 10 states have (on average 156.6) internal successors, (1566), 10 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:11:01,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:11:01,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 344 [2022-12-13 17:11:01,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:11:17,831 INFO L130 PetriNetUnfolder]: 22270/42647 cut-off events. [2022-12-13 17:11:17,831 INFO L131 PetriNetUnfolder]: For 1578051/1592855 co-relation queries the response was YES. [2022-12-13 17:11:18,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402602 conditions, 42647 events. 22270/42647 cut-off events. For 1578051/1592855 co-relation queries the response was YES. Maximal size of possible extension queue 2280. Compared 427259 event pairs, 3343 based on Foata normal form. 4290/46216 useless extension candidates. Maximal degree in co-relation 402539. Up to 12927 conditions per place. [2022-12-13 17:11:18,246 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 579 selfloop transitions, 1138 changer transitions 57/1792 dead transitions. [2022-12-13 17:11:18,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 1792 transitions, 62243 flow [2022-12-13 17:11:18,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 17:11:18,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 17:11:18,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3183 transitions. [2022-12-13 17:11:18,249 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4869951040391677 [2022-12-13 17:11:18,250 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3183 transitions. [2022-12-13 17:11:18,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3183 transitions. [2022-12-13 17:11:18,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:11:18,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3183 transitions. [2022-12-13 17:11:18,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 167.52631578947367) internal successors, (3183), 19 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:11:18,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 344.0) internal successors, (6880), 20 states have internal predecessors, (6880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:11:18,256 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 344.0) internal successors, (6880), 20 states have internal predecessors, (6880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:11:18,256 INFO L175 Difference]: Start difference. First operand has 260 places, 1607 transitions, 56529 flow. Second operand 19 states and 3183 transitions. [2022-12-13 17:11:18,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 1792 transitions, 62243 flow [2022-12-13 17:11:31,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 1792 transitions, 61174 flow, removed 30 selfloop flow, removed 10 redundant places. [2022-12-13 17:11:31,930 INFO L231 Difference]: Finished difference. Result has 270 places, 1585 transitions, 56719 flow [2022-12-13 17:11:31,930 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=55470, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=56719, PETRI_PLACES=270, PETRI_TRANSITIONS=1585} [2022-12-13 17:11:31,931 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 191 predicate places. [2022-12-13 17:11:31,931 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 1585 transitions, 56719 flow [2022-12-13 17:11:31,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 156.6) internal successors, (1566), 10 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:11:31,931 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:11:31,931 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:11:31,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-12-13 17:11:31,931 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:11:31,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:11:31,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1863662526, now seen corresponding path program 26 times [2022-12-13 17:11:31,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:11:31,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628274327] [2022-12-13 17:11:31,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:11:31,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:11:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:32,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:11:32,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:11:32,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628274327] [2022-12-13 17:11:32,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628274327] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:11:32,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:11:32,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 17:11:32,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758552398] [2022-12-13 17:11:32,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:11:32,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 17:11:32,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:11:32,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 17:11:32,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:11:32,094 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 344 [2022-12-13 17:11:32,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 1585 transitions, 56719 flow. Second operand has 9 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:11:32,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:11:32,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 344 [2022-12-13 17:11:32,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:11:47,872 INFO L130 PetriNetUnfolder]: 21048/40405 cut-off events. [2022-12-13 17:11:47,872 INFO L131 PetriNetUnfolder]: For 1595270/1610244 co-relation queries the response was YES. [2022-12-13 17:11:48,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389594 conditions, 40405 events. 21048/40405 cut-off events. For 1595270/1610244 co-relation queries the response was YES. Maximal size of possible extension queue 2206. Compared 405238 event pairs, 1969 based on Foata normal form. 4614/44361 useless extension candidates. Maximal degree in co-relation 389530. Up to 9528 conditions per place. [2022-12-13 17:11:48,255 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 245 selfloop transitions, 1476 changer transitions 94/1832 dead transitions. [2022-12-13 17:11:48,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 1832 transitions, 64464 flow [2022-12-13 17:11:48,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 17:11:48,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 17:11:48,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2111 transitions. [2022-12-13 17:11:48,257 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5113856589147286 [2022-12-13 17:11:48,257 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2111 transitions. [2022-12-13 17:11:48,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2111 transitions. [2022-12-13 17:11:48,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:11:48,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2111 transitions. [2022-12-13 17:11:48,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 175.91666666666666) internal successors, (2111), 12 states have internal predecessors, (2111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:11:48,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 344.0) internal successors, (4472), 13 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:11:48,261 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 344.0) internal successors, (4472), 13 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:11:48,261 INFO L175 Difference]: Start difference. First operand has 270 places, 1585 transitions, 56719 flow. Second operand 12 states and 2111 transitions. [2022-12-13 17:11:48,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 1832 transitions, 64464 flow [2022-12-13 17:12:02,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 1832 transitions, 64260 flow, removed 11 selfloop flow, removed 11 redundant places. [2022-12-13 17:12:02,643 INFO L231 Difference]: Finished difference. Result has 273 places, 1564 transitions, 58770 flow [2022-12-13 17:12:02,644 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=56310, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1417, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=58770, PETRI_PLACES=273, PETRI_TRANSITIONS=1564} [2022-12-13 17:12:02,644 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 194 predicate places. [2022-12-13 17:12:02,645 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 1564 transitions, 58770 flow [2022-12-13 17:12:02,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:12:02,645 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:12:02,645 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:12:02,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-12-13 17:12:02,645 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:12:02,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:12:02,645 INFO L85 PathProgramCache]: Analyzing trace with hash 13444724, now seen corresponding path program 27 times [2022-12-13 17:12:02,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:12:02,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375518220] [2022-12-13 17:12:02,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:12:02,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:12:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:02,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:12:02,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:12:02,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375518220] [2022-12-13 17:12:02,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375518220] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:12:02,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:12:02,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 17:12:02,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532884048] [2022-12-13 17:12:02,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:12:02,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 17:12:02,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:12:02,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 17:12:02,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:12:02,794 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 344 [2022-12-13 17:12:02,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 1564 transitions, 58770 flow. Second operand has 9 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:12:02,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:12:02,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 344 [2022-12-13 17:12:02,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:12:17,574 INFO L130 PetriNetUnfolder]: 19477/37748 cut-off events. [2022-12-13 17:12:17,574 INFO L131 PetriNetUnfolder]: For 1675279/1686265 co-relation queries the response was YES. [2022-12-13 17:12:17,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381046 conditions, 37748 events. 19477/37748 cut-off events. For 1675279/1686265 co-relation queries the response was YES. Maximal size of possible extension queue 2020. Compared 378509 event pairs, 1786 based on Foata normal form. 3562/40659 useless extension candidates. Maximal degree in co-relation 380978. Up to 10010 conditions per place. [2022-12-13 17:12:17,962 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 157 selfloop transitions, 1547 changer transitions 8/1729 dead transitions. [2022-12-13 17:12:17,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 1729 transitions, 64138 flow [2022-12-13 17:12:17,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 17:12:17,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 17:12:17,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2088 transitions. [2022-12-13 17:12:17,964 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5058139534883721 [2022-12-13 17:12:17,964 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2088 transitions. [2022-12-13 17:12:17,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2088 transitions. [2022-12-13 17:12:17,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:12:17,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2088 transitions. [2022-12-13 17:12:17,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 174.0) internal successors, (2088), 12 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:12:17,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 344.0) internal successors, (4472), 13 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:12:17,967 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 344.0) internal successors, (4472), 13 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:12:17,967 INFO L175 Difference]: Start difference. First operand has 273 places, 1564 transitions, 58770 flow. Second operand 12 states and 2088 transitions. [2022-12-13 17:12:17,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 1729 transitions, 64138 flow [2022-12-13 17:12:31,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 1729 transitions, 62484 flow, removed 16 selfloop flow, removed 5 redundant places. [2022-12-13 17:12:31,881 INFO L231 Difference]: Finished difference. Result has 280 places, 1598 transitions, 61022 flow [2022-12-13 17:12:31,882 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=57148, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1509, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=61022, PETRI_PLACES=280, PETRI_TRANSITIONS=1598} [2022-12-13 17:12:31,882 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 201 predicate places. [2022-12-13 17:12:31,883 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 1598 transitions, 61022 flow [2022-12-13 17:12:31,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:12:31,883 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:12:31,883 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:12:31,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-12-13 17:12:31,883 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 17:12:31,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:12:31,884 INFO L85 PathProgramCache]: Analyzing trace with hash 872201504, now seen corresponding path program 28 times [2022-12-13 17:12:31,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:12:31,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314100400] [2022-12-13 17:12:31,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:12:31,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:12:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:32,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:12:32,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:12:32,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314100400] [2022-12-13 17:12:32,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314100400] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:12:32,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:12:32,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:12:32,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296528897] [2022-12-13 17:12:32,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:12:32,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:12:32,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:12:32,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:12:32,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:12:32,092 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 344 [2022-12-13 17:12:32,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 1598 transitions, 61022 flow. Second operand has 8 states, 8 states have (on average 156.625) internal successors, (1253), 8 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:12:32,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:12:32,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 344 [2022-12-13 17:12:32,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:12:49,172 INFO L130 PetriNetUnfolder]: 22632/41958 cut-off events. [2022-12-13 17:12:49,172 INFO L131 PetriNetUnfolder]: For 1867344/1877182 co-relation queries the response was YES. [2022-12-13 17:12:49,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423823 conditions, 41958 events. 22632/41958 cut-off events. For 1867344/1877182 co-relation queries the response was YES. Maximal size of possible extension queue 2159. Compared 406853 event pairs, 2228 based on Foata normal form. 3064/44265 useless extension candidates. Maximal degree in co-relation 423755. Up to 13026 conditions per place. [2022-12-13 17:12:49,624 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 186 selfloop transitions, 1489 changer transitions 40/1731 dead transitions. [2022-12-13 17:12:49,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 1731 transitions, 66156 flow [2022-12-13 17:12:49,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 17:12:49,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 17:12:49,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1556 transitions. [2022-12-13 17:12:49,626 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5025839793281653 [2022-12-13 17:12:49,626 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1556 transitions. [2022-12-13 17:12:49,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1556 transitions. [2022-12-13 17:12:49,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:12:49,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1556 transitions. [2022-12-13 17:12:49,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 172.88888888888889) internal successors, (1556), 9 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:12:49,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 344.0) internal successors, (3440), 10 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:12:49,629 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 344.0) internal successors, (3440), 10 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:12:49,630 INFO L175 Difference]: Start difference. First operand has 280 places, 1598 transitions, 61022 flow. Second operand 9 states and 1556 transitions. [2022-12-13 17:12:49,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 1731 transitions, 66156 flow