./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/test-easy11.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/test-easy11.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:19:44,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:19:44,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:19:44,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:19:44,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:19:44,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:19:44,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:19:44,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:19:44,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:19:44,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:19:44,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:19:44,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:19:44,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:19:44,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:19:44,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:19:44,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:19:44,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:19:44,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:19:44,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:19:44,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:19:44,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:19:44,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:19:44,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:19:44,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:19:44,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:19:44,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:19:44,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:19:44,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:19:44,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:19:44,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:19:44,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:19:44,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:19:44,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:19:44,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:19:44,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:19:44,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:19:44,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:19:44,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:19:44,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:19:44,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:19:44,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:19:44,407 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 17:19:44,444 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:19:44,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:19:44,450 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:19:44,450 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:19:44,451 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:19:44,451 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:19:44,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:19:44,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:19:44,452 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:19:44,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:19:44,454 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:19:44,454 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:19:44,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:19:44,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:19:44,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:19:44,455 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 17:19:44,455 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 17:19:44,455 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 17:19:44,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:19:44,456 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:19:44,456 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:19:44,456 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:19:44,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:19:44,456 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:19:44,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:19:44,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:19:44,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:19:44,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:19:44,458 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:19:44,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:19:44,459 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:19:44,459 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:19:44,459 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:19:44,459 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_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 [2022-11-25 17:19:44,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:19:44,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:19:44,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:19:44,827 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:19:44,828 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:19:44,829 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/test-easy11.wvr.c [2022-11-25 17:19:47,850 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:19:48,113 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:19:48,114 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/sv-benchmarks/c/weaver/test-easy11.wvr.c [2022-11-25 17:19:48,120 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/data/ec673652d/f628003b55094ea18ed5a3fa249306cc/FLAG20b847ef8 [2022-11-25 17:19:48,133 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/data/ec673652d/f628003b55094ea18ed5a3fa249306cc [2022-11-25 17:19:48,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:19:48,138 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:19:48,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:19:48,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:19:48,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:19:48,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:19:48" (1/1) ... [2022-11-25 17:19:48,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@705deb1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:19:48, skipping insertion in model container [2022-11-25 17:19:48,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:19:48" (1/1) ... [2022-11-25 17:19:48,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:19:48,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:19:48,337 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:19:48,338 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:19:48,341 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:19:48,341 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:19:48,348 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_ebb76660-4152-415c-91b8-74bf0b6d1a67/sv-benchmarks/c/weaver/test-easy11.wvr.c[2005,2018] [2022-11-25 17:19:48,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:19:48,365 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:19:48,380 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:19:48,380 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:19:48,382 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:19:48,382 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:19:48,387 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_ebb76660-4152-415c-91b8-74bf0b6d1a67/sv-benchmarks/c/weaver/test-easy11.wvr.c[2005,2018] [2022-11-25 17:19:48,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:19:48,401 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:19:48,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:19:48 WrapperNode [2022-11-25 17:19:48,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:19:48,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:19:48,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:19:48,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:19:48,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:19:48" (1/1) ... [2022-11-25 17:19:48,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:19:48" (1/1) ... [2022-11-25 17:19:48,447 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-11-25 17:19:48,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:19:48,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:19:48,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:19:48,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:19:48,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:19:48" (1/1) ... [2022-11-25 17:19:48,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:19:48" (1/1) ... [2022-11-25 17:19:48,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:19:48" (1/1) ... [2022-11-25 17:19:48,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:19:48" (1/1) ... [2022-11-25 17:19:48,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:19:48" (1/1) ... [2022-11-25 17:19:48,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:19:48" (1/1) ... [2022-11-25 17:19:48,500 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:19:48" (1/1) ... [2022-11-25 17:19:48,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:19:48" (1/1) ... [2022-11-25 17:19:48,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:19:48,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:19:48,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:19:48,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:19:48,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:19:48" (1/1) ... [2022-11-25 17:19:48,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:19:48,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:19:48,548 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:19:48,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:19:48,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:19:48,593 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:19:48,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:19:48,594 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:19:48,594 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:19:48,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:19:48,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:19:48,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:19:48,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:19:48,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:19:48,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:19:48,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:19:48,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:19:48,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:19:48,597 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:19:48,730 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:19:48,733 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:19:49,005 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:19:49,012 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:19:49,013 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 17:19:49,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:19:49 BoogieIcfgContainer [2022-11-25 17:19:49,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:19:49,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:19:49,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:19:49,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:19:49,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:19:48" (1/3) ... [2022-11-25 17:19:49,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e4da0ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:19:49, skipping insertion in model container [2022-11-25 17:19:49,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:19:48" (2/3) ... [2022-11-25 17:19:49,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e4da0ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:19:49, skipping insertion in model container [2022-11-25 17:19:49,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:19:49" (3/3) ... [2022-11-25 17:19:49,025 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2022-11-25 17:19:49,054 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:19:49,057 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-25 17:19:49,057 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:19:49,178 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 17:19:49,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 99 transitions, 214 flow [2022-11-25 17:19:49,319 INFO L130 PetriNetUnfolder]: 6/97 cut-off events. [2022-11-25 17:19:49,320 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:19:49,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 97 events. 6/97 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2022-11-25 17:19:49,325 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 99 transitions, 214 flow [2022-11-25 17:19:49,329 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 92 transitions, 196 flow [2022-11-25 17:19:49,333 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:19:49,362 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 92 transitions, 196 flow [2022-11-25 17:19:49,369 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 92 transitions, 196 flow [2022-11-25 17:19:49,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 92 transitions, 196 flow [2022-11-25 17:19:49,402 INFO L130 PetriNetUnfolder]: 6/92 cut-off events. [2022-11-25 17:19:49,402 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:19:49,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 92 events. 6/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 87 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2022-11-25 17:19:49,404 INFO L119 LiptonReduction]: Number of co-enabled transitions 748 [2022-11-25 17:19:52,817 INFO L134 LiptonReduction]: Checked pairs total: 768 [2022-11-25 17:19:52,817 INFO L136 LiptonReduction]: Total number of compositions: 84 [2022-11-25 17:19:52,854 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:19:52,861 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;@312f2e3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:19:52,861 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-25 17:19:52,864 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-11-25 17:19:52,864 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:19:52,864 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:19:52,865 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 17:19:52,866 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:19:52,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:19:52,871 INFO L85 PathProgramCache]: Analyzing trace with hash 363, now seen corresponding path program 1 times [2022-11-25 17:19:52,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:19:52,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696254772] [2022-11-25 17:19:52,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:19:52,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:19:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:19:52,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:19:52,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:19:52,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696254772] [2022-11-25 17:19:52,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696254772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:19:52,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:19:52,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 17:19:52,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171965214] [2022-11-25 17:19:52,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:19:52,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:19:52,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:19:53,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:19:53,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:19:53,022 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 183 [2022-11-25 17:19:53,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 60 flow. Second operand has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:53,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:19:53,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 183 [2022-11-25 17:19:53,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:19:53,120 INFO L130 PetriNetUnfolder]: 88/151 cut-off events. [2022-11-25 17:19:53,120 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-25 17:19:53,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 151 events. 88/151 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 375 event pairs, 56 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 252. Up to 152 conditions per place. [2022-11-25 17:19:53,126 INFO L137 encePairwiseOnDemand]: 180/183 looper letters, 21 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2022-11-25 17:19:53,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 96 flow [2022-11-25 17:19:53,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:19:53,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:19:53,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 204 transitions. [2022-11-25 17:19:53,143 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5573770491803278 [2022-11-25 17:19:53,144 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 204 transitions. [2022-11-25 17:19:53,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 204 transitions. [2022-11-25 17:19:53,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:19:53,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 204 transitions. [2022-11-25 17:19:53,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 102.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:53,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:53,168 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:53,170 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 60 flow. Second operand 2 states and 204 transitions. [2022-11-25 17:19:53,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 96 flow [2022-11-25 17:19:53,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 17:19:53,175 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 46 flow [2022-11-25 17:19:53,177 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=46, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2022-11-25 17:19:53,181 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -6 predicate places. [2022-11-25 17:19:53,181 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 46 flow [2022-11-25 17:19:53,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:53,183 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:19:53,186 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:19:53,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:19:53,187 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:19:53,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:19:53,197 INFO L85 PathProgramCache]: Analyzing trace with hash 355852, now seen corresponding path program 1 times [2022-11-25 17:19:53,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:19:53,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828585698] [2022-11-25 17:19:53,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:19:53,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:19:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:19:53,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:19:53,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:19:53,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828585698] [2022-11-25 17:19:53,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828585698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:19:53,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:19:53,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:19:53,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049547375] [2022-11-25 17:19:53,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:19:53,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:19:53,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:19:53,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:19:53,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:19:53,516 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 183 [2022-11-25 17:19:53,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:53,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:19:53,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 183 [2022-11-25 17:19:53,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:19:53,562 INFO L130 PetriNetUnfolder]: 82/139 cut-off events. [2022-11-25 17:19:53,563 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:19:53,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 139 events. 82/139 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 332 event pairs, 52 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 282. Up to 139 conditions per place. [2022-11-25 17:19:53,564 INFO L137 encePairwiseOnDemand]: 180/183 looper letters, 18 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2022-11-25 17:19:53,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 80 flow [2022-11-25 17:19:53,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:19:53,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:19:53,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2022-11-25 17:19:53,567 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5027322404371585 [2022-11-25 17:19:53,567 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2022-11-25 17:19:53,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2022-11-25 17:19:53,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:19:53,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2022-11-25 17:19:53,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:53,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:53,571 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:53,571 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 46 flow. Second operand 3 states and 276 transitions. [2022-11-25 17:19:53,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 80 flow [2022-11-25 17:19:53,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 80 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:19:53,573 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 44 flow [2022-11-25 17:19:53,573 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2022-11-25 17:19:53,573 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -6 predicate places. [2022-11-25 17:19:53,574 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 44 flow [2022-11-25 17:19:53,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:53,574 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:19:53,574 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:19:53,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:19:53,575 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:19:53,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:19:53,575 INFO L85 PathProgramCache]: Analyzing trace with hash 355851, now seen corresponding path program 1 times [2022-11-25 17:19:53,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:19:53,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116241780] [2022-11-25 17:19:53,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:19:53,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:19:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:19:53,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:19:53,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:19:53,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116241780] [2022-11-25 17:19:53,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116241780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:19:53,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:19:53,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:19:53,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423633083] [2022-11-25 17:19:53,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:19:53,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:19:53,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:19:53,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:19:53,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:19:53,680 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 183 [2022-11-25 17:19:53,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:53,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:19:53,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 183 [2022-11-25 17:19:53,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:19:53,740 INFO L130 PetriNetUnfolder]: 76/127 cut-off events. [2022-11-25 17:19:53,740 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:19:53,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 127 events. 76/127 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 290 event pairs, 48 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 259. Up to 127 conditions per place. [2022-11-25 17:19:53,744 INFO L137 encePairwiseOnDemand]: 180/183 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2022-11-25 17:19:53,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2022-11-25 17:19:53,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:19:53,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:19:53,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2022-11-25 17:19:53,749 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4772313296903461 [2022-11-25 17:19:53,749 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2022-11-25 17:19:53,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2022-11-25 17:19:53,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:19:53,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2022-11-25 17:19:53,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:53,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:53,754 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:53,754 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 44 flow. Second operand 3 states and 262 transitions. [2022-11-25 17:19:53,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2022-11-25 17:19:53,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 17 transitions, 73 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:19:53,756 INFO L231 Difference]: Finished difference. Result has 22 places, 17 transitions, 41 flow [2022-11-25 17:19:53,756 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=41, PETRI_PLACES=22, PETRI_TRANSITIONS=17} [2022-11-25 17:19:53,757 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2022-11-25 17:19:53,758 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 41 flow [2022-11-25 17:19:53,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:53,758 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:19:53,758 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:19:53,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:19:53,759 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:19:53,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:19:53,760 INFO L85 PathProgramCache]: Analyzing trace with hash 341979746, now seen corresponding path program 1 times [2022-11-25 17:19:53,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:19:53,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291333968] [2022-11-25 17:19:53,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:19:53,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:19:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:19:53,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:19:53,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:19:53,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291333968] [2022-11-25 17:19:53,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291333968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:19:53,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:19:53,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:19:53,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397426555] [2022-11-25 17:19:53,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:19:53,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:19:53,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:19:53,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:19:53,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:19:53,838 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 183 [2022-11-25 17:19:53,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 41 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:53,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:19:53,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 183 [2022-11-25 17:19:53,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:19:53,875 INFO L130 PetriNetUnfolder]: 58/100 cut-off events. [2022-11-25 17:19:53,876 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:19:53,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 100 events. 58/100 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 206 event pairs, 36 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 206. Up to 100 conditions per place. [2022-11-25 17:19:53,877 INFO L137 encePairwiseOnDemand]: 181/183 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2022-11-25 17:19:53,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 16 transitions, 71 flow [2022-11-25 17:19:53,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:19:53,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:19:53,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2022-11-25 17:19:53,879 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4790528233151184 [2022-11-25 17:19:53,879 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2022-11-25 17:19:53,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2022-11-25 17:19:53,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:19:53,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2022-11-25 17:19:53,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:53,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:53,882 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:53,882 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 41 flow. Second operand 3 states and 263 transitions. [2022-11-25 17:19:53,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 16 transitions, 71 flow [2022-11-25 17:19:53,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 70 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:19:53,883 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 40 flow [2022-11-25 17:19:53,883 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2022-11-25 17:19:53,884 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2022-11-25 17:19:53,884 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 40 flow [2022-11-25 17:19:53,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:53,885 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:19:53,885 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:19:53,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:19:53,885 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:19:53,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:19:53,886 INFO L85 PathProgramCache]: Analyzing trace with hash 341979745, now seen corresponding path program 1 times [2022-11-25 17:19:53,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:19:53,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450466340] [2022-11-25 17:19:53,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:19:53,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:19:53,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:19:53,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:19:53,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:19:53,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450466340] [2022-11-25 17:19:53,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450466340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:19:53,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:19:53,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:19:53,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365550948] [2022-11-25 17:19:53,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:19:53,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:19:53,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:19:53,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:19:53,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:19:54,025 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 183 [2022-11-25 17:19:54,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 40 flow. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:54,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:19:54,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 183 [2022-11-25 17:19:54,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:19:54,062 INFO L130 PetriNetUnfolder]: 40/73 cut-off events. [2022-11-25 17:19:54,062 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:19:54,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 73 events. 40/73 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 126 event pairs, 24 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 153. Up to 73 conditions per place. [2022-11-25 17:19:54,063 INFO L137 encePairwiseOnDemand]: 181/183 looper letters, 14 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2022-11-25 17:19:54,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 15 transitions, 68 flow [2022-11-25 17:19:54,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:19:54,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:19:54,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2022-11-25 17:19:54,065 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44990892531876137 [2022-11-25 17:19:54,065 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2022-11-25 17:19:54,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2022-11-25 17:19:54,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:19:54,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2022-11-25 17:19:54,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:54,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:54,069 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:54,069 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 40 flow. Second operand 3 states and 247 transitions. [2022-11-25 17:19:54,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 15 transitions, 68 flow [2022-11-25 17:19:54,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 15 transitions, 67 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:19:54,071 INFO L231 Difference]: Finished difference. Result has 22 places, 15 transitions, 39 flow [2022-11-25 17:19:54,071 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=39, PETRI_PLACES=22, PETRI_TRANSITIONS=15} [2022-11-25 17:19:54,072 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2022-11-25 17:19:54,072 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 15 transitions, 39 flow [2022-11-25 17:19:54,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:54,073 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:19:54,073 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:19:54,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:19:54,074 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:19:54,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:19:54,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1568109863, now seen corresponding path program 1 times [2022-11-25 17:19:54,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:19:54,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262320407] [2022-11-25 17:19:54,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:19:54,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:19:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:19:54,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:19:54,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:19:54,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262320407] [2022-11-25 17:19:54,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262320407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:19:54,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:19:54,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:19:54,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972385210] [2022-11-25 17:19:54,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:19:54,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:19:54,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:19:54,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:19:54,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:19:54,552 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 183 [2022-11-25 17:19:54,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 15 transitions, 39 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:54,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:19:54,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 183 [2022-11-25 17:19:54,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:19:54,713 INFO L130 PetriNetUnfolder]: 46/88 cut-off events. [2022-11-25 17:19:54,714 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:19:54,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 88 events. 46/88 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 200 event pairs, 1 based on Foata normal form. 1/69 useless extension candidates. Maximal degree in co-relation 184. Up to 22 conditions per place. [2022-11-25 17:19:54,715 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 29 selfloop transitions, 8 changer transitions 5/42 dead transitions. [2022-11-25 17:19:54,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 42 transitions, 183 flow [2022-11-25 17:19:54,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:19:54,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:19:54,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 582 transitions. [2022-11-25 17:19:54,718 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45433255269320844 [2022-11-25 17:19:54,718 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 582 transitions. [2022-11-25 17:19:54,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 582 transitions. [2022-11-25 17:19:54,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:19:54,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 582 transitions. [2022-11-25 17:19:54,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:54,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:54,724 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:54,725 INFO L175 Difference]: Start difference. First operand has 22 places, 15 transitions, 39 flow. Second operand 7 states and 582 transitions. [2022-11-25 17:19:54,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 42 transitions, 183 flow [2022-11-25 17:19:54,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 42 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:19:54,727 INFO L231 Difference]: Finished difference. Result has 32 places, 21 transitions, 88 flow [2022-11-25 17:19:54,727 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=88, PETRI_PLACES=32, PETRI_TRANSITIONS=21} [2022-11-25 17:19:54,728 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2022-11-25 17:19:54,728 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 21 transitions, 88 flow [2022-11-25 17:19:54,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:54,729 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:19:54,729 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:19:54,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:19:54,729 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:19:54,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:19:54,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1256129159, now seen corresponding path program 2 times [2022-11-25 17:19:54,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:19:54,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657562968] [2022-11-25 17:19:54,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:19:54,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:19:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:19:54,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:19:54,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:19:54,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657562968] [2022-11-25 17:19:54,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657562968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:19:54,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:19:54,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:19:54,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856467050] [2022-11-25 17:19:54,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:19:54,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:19:54,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:19:54,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:19:54,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:19:55,049 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 183 [2022-11-25 17:19:55,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 21 transitions, 88 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:55,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:19:55,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 183 [2022-11-25 17:19:55,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:19:55,224 INFO L130 PetriNetUnfolder]: 56/104 cut-off events. [2022-11-25 17:19:55,224 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2022-11-25 17:19:55,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 104 events. 56/104 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 232 event pairs, 7 based on Foata normal form. 1/105 useless extension candidates. Maximal degree in co-relation 312. Up to 57 conditions per place. [2022-11-25 17:19:55,226 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 27 selfloop transitions, 12 changer transitions 5/44 dead transitions. [2022-11-25 17:19:55,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 250 flow [2022-11-25 17:19:55,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:19:55,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:19:55,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 582 transitions. [2022-11-25 17:19:55,230 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45433255269320844 [2022-11-25 17:19:55,230 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 582 transitions. [2022-11-25 17:19:55,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 582 transitions. [2022-11-25 17:19:55,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:19:55,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 582 transitions. [2022-11-25 17:19:55,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:55,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:55,235 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:55,235 INFO L175 Difference]: Start difference. First operand has 32 places, 21 transitions, 88 flow. Second operand 7 states and 582 transitions. [2022-11-25 17:19:55,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 44 transitions, 250 flow [2022-11-25 17:19:55,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 240 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-25 17:19:55,238 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 162 flow [2022-11-25 17:19:55,238 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=162, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2022-11-25 17:19:55,253 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2022-11-25 17:19:55,253 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 162 flow [2022-11-25 17:19:55,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:55,254 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:19:55,254 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:19:55,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:19:55,254 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:19:55,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:19:55,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1318652485, now seen corresponding path program 3 times [2022-11-25 17:19:55,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:19:55,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167199282] [2022-11-25 17:19:55,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:19:55,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:19:55,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:19:55,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:19:55,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:19:55,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167199282] [2022-11-25 17:19:55,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167199282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:19:55,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:19:55,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:19:55,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897224203] [2022-11-25 17:19:55,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:19:55,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:19:55,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:19:55,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:19:55,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:19:55,566 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 183 [2022-11-25 17:19:55,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:55,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:19:55,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 183 [2022-11-25 17:19:55,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:19:55,736 INFO L130 PetriNetUnfolder]: 66/120 cut-off events. [2022-11-25 17:19:55,736 INFO L131 PetriNetUnfolder]: For 176/176 co-relation queries the response was YES. [2022-11-25 17:19:55,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 120 events. 66/120 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 296 event pairs, 5 based on Foata normal form. 1/121 useless extension candidates. Maximal degree in co-relation 445. Up to 68 conditions per place. [2022-11-25 17:19:55,738 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 32 selfloop transitions, 15 changer transitions 5/52 dead transitions. [2022-11-25 17:19:55,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 52 transitions, 368 flow [2022-11-25 17:19:55,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:19:55,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:19:55,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 584 transitions. [2022-11-25 17:19:55,741 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4558938329430133 [2022-11-25 17:19:55,741 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 584 transitions. [2022-11-25 17:19:55,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 584 transitions. [2022-11-25 17:19:55,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:19:55,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 584 transitions. [2022-11-25 17:19:55,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:55,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:55,746 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:55,746 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 162 flow. Second operand 7 states and 584 transitions. [2022-11-25 17:19:55,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 52 transitions, 368 flow [2022-11-25 17:19:55,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 52 transitions, 335 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-11-25 17:19:55,750 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 232 flow [2022-11-25 17:19:55,750 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=232, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2022-11-25 17:19:55,751 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2022-11-25 17:19:55,751 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 232 flow [2022-11-25 17:19:55,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:55,751 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:19:55,751 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:19:55,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:19:55,752 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:19:55,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:19:55,752 INFO L85 PathProgramCache]: Analyzing trace with hash -2045054855, now seen corresponding path program 4 times [2022-11-25 17:19:55,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:19:55,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905329651] [2022-11-25 17:19:55,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:19:55,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:19:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:19:55,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:19:55,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:19:55,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905329651] [2022-11-25 17:19:55,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905329651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:19:55,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:19:55,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:19:55,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032492663] [2022-11-25 17:19:55,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:19:55,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:19:55,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:19:55,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:19:55,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:19:56,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 183 [2022-11-25 17:19:56,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 232 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:56,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:19:56,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 183 [2022-11-25 17:19:56,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:19:56,159 INFO L130 PetriNetUnfolder]: 65/121 cut-off events. [2022-11-25 17:19:56,159 INFO L131 PetriNetUnfolder]: For 277/277 co-relation queries the response was YES. [2022-11-25 17:19:56,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 504 conditions, 121 events. 65/121 cut-off events. For 277/277 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 301 event pairs, 5 based on Foata normal form. 1/120 useless extension candidates. Maximal degree in co-relation 490. Up to 73 conditions per place. [2022-11-25 17:19:56,161 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 31 selfloop transitions, 15 changer transitions 5/51 dead transitions. [2022-11-25 17:19:56,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 51 transitions, 402 flow [2022-11-25 17:19:56,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:19:56,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:19:56,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 582 transitions. [2022-11-25 17:19:56,164 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45433255269320844 [2022-11-25 17:19:56,164 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 582 transitions. [2022-11-25 17:19:56,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 582 transitions. [2022-11-25 17:19:56,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:19:56,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 582 transitions. [2022-11-25 17:19:56,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:56,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:56,169 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:56,169 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 232 flow. Second operand 7 states and 582 transitions. [2022-11-25 17:19:56,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 51 transitions, 402 flow [2022-11-25 17:19:56,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 51 transitions, 358 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-11-25 17:19:56,173 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 232 flow [2022-11-25 17:19:56,173 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=232, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2022-11-25 17:19:56,174 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2022-11-25 17:19:56,174 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 232 flow [2022-11-25 17:19:56,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:56,175 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:19:56,175 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:19:56,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:19:56,175 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:19:56,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:19:56,176 INFO L85 PathProgramCache]: Analyzing trace with hash -496596671, now seen corresponding path program 5 times [2022-11-25 17:19:56,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:19:56,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712239739] [2022-11-25 17:19:56,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:19:56,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:19:56,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:19:56,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:19:56,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:19:56,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712239739] [2022-11-25 17:19:56,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712239739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:19:56,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:19:56,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:19:56,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692887564] [2022-11-25 17:19:56,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:19:56,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:19:56,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:19:56,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:19:56,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:19:56,423 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 183 [2022-11-25 17:19:56,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 232 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:56,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:19:56,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 183 [2022-11-25 17:19:56,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:19:56,566 INFO L130 PetriNetUnfolder]: 66/124 cut-off events. [2022-11-25 17:19:56,566 INFO L131 PetriNetUnfolder]: For 281/281 co-relation queries the response was YES. [2022-11-25 17:19:56,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 124 events. 66/124 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 307 event pairs, 7 based on Foata normal form. 1/121 useless extension candidates. Maximal degree in co-relation 494. Up to 76 conditions per place. [2022-11-25 17:19:56,567 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 30 selfloop transitions, 15 changer transitions 5/50 dead transitions. [2022-11-25 17:19:56,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 50 transitions, 397 flow [2022-11-25 17:19:56,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:19:56,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:19:56,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 580 transitions. [2022-11-25 17:19:56,571 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4527712724434036 [2022-11-25 17:19:56,572 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 580 transitions. [2022-11-25 17:19:56,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 580 transitions. [2022-11-25 17:19:56,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:19:56,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 580 transitions. [2022-11-25 17:19:56,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:56,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:56,577 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:56,577 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 232 flow. Second operand 7 states and 580 transitions. [2022-11-25 17:19:56,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 50 transitions, 397 flow [2022-11-25 17:19:56,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 361 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-11-25 17:19:56,580 INFO L231 Difference]: Finished difference. Result has 50 places, 36 transitions, 242 flow [2022-11-25 17:19:56,580 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=242, PETRI_PLACES=50, PETRI_TRANSITIONS=36} [2022-11-25 17:19:56,581 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2022-11-25 17:19:56,581 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 36 transitions, 242 flow [2022-11-25 17:19:56,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:56,582 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:19:56,582 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:19:56,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:19:56,582 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:19:56,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:19:56,583 INFO L85 PathProgramCache]: Analyzing trace with hash -383202519, now seen corresponding path program 6 times [2022-11-25 17:19:56,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:19:56,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711673660] [2022-11-25 17:19:56,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:19:56,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:19:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:19:56,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:19:56,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:19:56,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711673660] [2022-11-25 17:19:56,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711673660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:19:56,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:19:56,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:19:56,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687442407] [2022-11-25 17:19:56,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:19:56,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:19:56,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:19:56,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:19:56,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:19:56,849 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 183 [2022-11-25 17:19:56,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 36 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:56,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:19:56,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 183 [2022-11-25 17:19:56,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:19:56,993 INFO L130 PetriNetUnfolder]: 67/127 cut-off events. [2022-11-25 17:19:56,993 INFO L131 PetriNetUnfolder]: For 333/333 co-relation queries the response was YES. [2022-11-25 17:19:56,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 127 events. 67/127 cut-off events. For 333/333 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 331 event pairs, 9 based on Foata normal form. 1/124 useless extension candidates. Maximal degree in co-relation 516. Up to 59 conditions per place. [2022-11-25 17:19:56,994 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 32 selfloop transitions, 14 changer transitions 5/51 dead transitions. [2022-11-25 17:19:56,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 51 transitions, 417 flow [2022-11-25 17:19:56,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:19:56,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:19:56,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 576 transitions. [2022-11-25 17:19:56,996 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4496487119437939 [2022-11-25 17:19:56,996 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 576 transitions. [2022-11-25 17:19:56,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 576 transitions. [2022-11-25 17:19:56,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:19:56,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 576 transitions. [2022-11-25 17:19:56,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.28571428571429) internal successors, (576), 7 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:56,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:57,000 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:57,000 INFO L175 Difference]: Start difference. First operand has 50 places, 36 transitions, 242 flow. Second operand 7 states and 576 transitions. [2022-11-25 17:19:57,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 51 transitions, 417 flow [2022-11-25 17:19:57,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 51 transitions, 379 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-11-25 17:19:57,005 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 248 flow [2022-11-25 17:19:57,005 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=248, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2022-11-25 17:19:57,006 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 23 predicate places. [2022-11-25 17:19:57,006 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 248 flow [2022-11-25 17:19:57,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:57,007 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:19:57,007 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:19:57,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:19:57,007 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:19:57,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:19:57,008 INFO L85 PathProgramCache]: Analyzing trace with hash 410634711, now seen corresponding path program 1 times [2022-11-25 17:19:57,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:19:57,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496280122] [2022-11-25 17:19:57,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:19:57,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:19:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:19:57,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:19:57,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:19:57,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496280122] [2022-11-25 17:19:57,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496280122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:19:57,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:19:57,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:19:57,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269860278] [2022-11-25 17:19:57,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:19:57,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:19:57,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:19:57,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:19:57,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:19:57,149 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 183 [2022-11-25 17:19:57,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 248 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:57,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:19:57,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 183 [2022-11-25 17:19:57,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:19:57,291 INFO L130 PetriNetUnfolder]: 104/195 cut-off events. [2022-11-25 17:19:57,291 INFO L131 PetriNetUnfolder]: For 627/627 co-relation queries the response was YES. [2022-11-25 17:19:57,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 195 events. 104/195 cut-off events. For 627/627 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 624 event pairs, 14 based on Foata normal form. 4/193 useless extension candidates. Maximal degree in co-relation 809. Up to 78 conditions per place. [2022-11-25 17:19:57,294 INFO L137 encePairwiseOnDemand]: 177/183 looper letters, 46 selfloop transitions, 22 changer transitions 4/72 dead transitions. [2022-11-25 17:19:57,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 72 transitions, 590 flow [2022-11-25 17:19:57,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:19:57,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:19:57,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 592 transitions. [2022-11-25 17:19:57,297 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46213895394223264 [2022-11-25 17:19:57,297 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 592 transitions. [2022-11-25 17:19:57,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 592 transitions. [2022-11-25 17:19:57,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:19:57,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 592 transitions. [2022-11-25 17:19:57,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.57142857142857) internal successors, (592), 7 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:57,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:57,302 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:57,302 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 248 flow. Second operand 7 states and 592 transitions. [2022-11-25 17:19:57,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 72 transitions, 590 flow [2022-11-25 17:19:57,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 72 transitions, 522 flow, removed 10 selfloop flow, removed 6 redundant places. [2022-11-25 17:19:57,307 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 366 flow [2022-11-25 17:19:57,307 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=366, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2022-11-25 17:19:57,310 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 26 predicate places. [2022-11-25 17:19:57,311 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 366 flow [2022-11-25 17:19:57,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:57,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:19:57,311 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:19:57,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:19:57,313 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:19:57,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:19:57,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1541623610, now seen corresponding path program 1 times [2022-11-25 17:19:57,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:19:57,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153190881] [2022-11-25 17:19:57,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:19:57,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:19:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:19:57,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:19:57,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:19:57,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153190881] [2022-11-25 17:19:57,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153190881] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:19:57,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465342007] [2022-11-25 17:19:57,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:19:57,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:19:57,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:19:57,372 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:19:57,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:19:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:19:57,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:19:57,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:19:57,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:19:57,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:19:57,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:19:57,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465342007] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 17:19:57,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:19:57,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2022-11-25 17:19:57,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167008335] [2022-11-25 17:19:57,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:19:57,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:19:57,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:19:57,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:19:57,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:19:57,608 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 183 [2022-11-25 17:19:57,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 366 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:57,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:19:57,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 183 [2022-11-25 17:19:57,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:19:57,762 INFO L130 PetriNetUnfolder]: 123/242 cut-off events. [2022-11-25 17:19:57,763 INFO L131 PetriNetUnfolder]: For 1001/1001 co-relation queries the response was YES. [2022-11-25 17:19:57,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1101 conditions, 242 events. 123/242 cut-off events. For 1001/1001 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 866 event pairs, 4 based on Foata normal form. 6/248 useless extension candidates. Maximal degree in co-relation 1083. Up to 125 conditions per place. [2022-11-25 17:19:57,765 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 49 selfloop transitions, 22 changer transitions 0/71 dead transitions. [2022-11-25 17:19:57,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 71 transitions, 641 flow [2022-11-25 17:19:57,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:19:57,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:19:57,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 432 transitions. [2022-11-25 17:19:57,768 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4721311475409836 [2022-11-25 17:19:57,768 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 432 transitions. [2022-11-25 17:19:57,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 432 transitions. [2022-11-25 17:19:57,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:19:57,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 432 transitions. [2022-11-25 17:19:57,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.4) internal successors, (432), 5 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:57,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:57,772 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:57,772 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 366 flow. Second operand 5 states and 432 transitions. [2022-11-25 17:19:57,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 71 transitions, 641 flow [2022-11-25 17:19:57,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 613 flow, removed 10 selfloop flow, removed 2 redundant places. [2022-11-25 17:19:57,778 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 493 flow [2022-11-25 17:19:57,779 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=493, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2022-11-25 17:19:57,779 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2022-11-25 17:19:57,779 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 493 flow [2022-11-25 17:19:57,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:57,780 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:19:57,780 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:19:57,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:19:57,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 17:19:57,986 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:19:57,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:19:57,987 INFO L85 PathProgramCache]: Analyzing trace with hash -61566905, now seen corresponding path program 2 times [2022-11-25 17:19:57,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:19:57,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440980851] [2022-11-25 17:19:57,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:19:57,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:19:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:19:58,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:19:58,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:19:58,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440980851] [2022-11-25 17:19:58,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440980851] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:19:58,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689106449] [2022-11-25 17:19:58,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:19:58,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:19:58,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:19:58,073 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:19:58,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:19:58,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:19:58,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:19:58,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:19:58,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:19:58,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:19:58,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:19:58,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:19:58,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689106449] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 17:19:58,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:19:58,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2022-11-25 17:19:58,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261757964] [2022-11-25 17:19:58,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:19:58,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:19:58,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:19:58,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:19:58,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:19:58,274 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 183 [2022-11-25 17:19:58,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 493 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:58,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:19:58,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 183 [2022-11-25 17:19:58,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:19:58,430 INFO L130 PetriNetUnfolder]: 137/278 cut-off events. [2022-11-25 17:19:58,431 INFO L131 PetriNetUnfolder]: For 1798/1798 co-relation queries the response was YES. [2022-11-25 17:19:58,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1414 conditions, 278 events. 137/278 cut-off events. For 1798/1798 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1081 event pairs, 24 based on Foata normal form. 4/282 useless extension candidates. Maximal degree in co-relation 1394. Up to 142 conditions per place. [2022-11-25 17:19:58,434 INFO L137 encePairwiseOnDemand]: 177/183 looper letters, 61 selfloop transitions, 24 changer transitions 0/85 dead transitions. [2022-11-25 17:19:58,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 85 transitions, 853 flow [2022-11-25 17:19:58,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:19:58,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:19:58,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 519 transitions. [2022-11-25 17:19:58,437 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4726775956284153 [2022-11-25 17:19:58,437 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 519 transitions. [2022-11-25 17:19:58,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 519 transitions. [2022-11-25 17:19:58,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:19:58,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 519 transitions. [2022-11-25 17:19:58,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.5) internal successors, (519), 6 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:58,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:58,441 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:58,442 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 493 flow. Second operand 6 states and 519 transitions. [2022-11-25 17:19:58,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 85 transitions, 853 flow [2022-11-25 17:19:58,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 85 transitions, 826 flow, removed 12 selfloop flow, removed 1 redundant places. [2022-11-25 17:19:58,481 INFO L231 Difference]: Finished difference. Result has 68 places, 61 transitions, 644 flow [2022-11-25 17:19:58,482 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=644, PETRI_PLACES=68, PETRI_TRANSITIONS=61} [2022-11-25 17:19:58,482 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 39 predicate places. [2022-11-25 17:19:58,482 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 644 flow [2022-11-25 17:19:58,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:58,483 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:19:58,483 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:19:58,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:19:58,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:19:58,683 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:19:58,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:19:58,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1660476920, now seen corresponding path program 2 times [2022-11-25 17:19:58,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:19:58,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479262687] [2022-11-25 17:19:58,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:19:58,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:19:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:19:58,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:19:58,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:19:58,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479262687] [2022-11-25 17:19:58,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479262687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:19:58,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:19:58,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:19:58,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253257744] [2022-11-25 17:19:58,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:19:58,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:19:58,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:19:58,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:19:58,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:19:58,789 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 183 [2022-11-25 17:19:58,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 61 transitions, 644 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:58,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:19:58,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 183 [2022-11-25 17:19:58,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:19:58,920 INFO L130 PetriNetUnfolder]: 131/264 cut-off events. [2022-11-25 17:19:58,921 INFO L131 PetriNetUnfolder]: For 1740/1740 co-relation queries the response was YES. [2022-11-25 17:19:58,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1436 conditions, 264 events. 131/264 cut-off events. For 1740/1740 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1011 event pairs, 10 based on Foata normal form. 4/268 useless extension candidates. Maximal degree in co-relation 1412. Up to 108 conditions per place. [2022-11-25 17:19:58,924 INFO L137 encePairwiseOnDemand]: 177/183 looper letters, 52 selfloop transitions, 21 changer transitions 2/75 dead transitions. [2022-11-25 17:19:58,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 75 transitions, 872 flow [2022-11-25 17:19:58,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:19:58,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:19:58,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 508 transitions. [2022-11-25 17:19:58,926 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46265938069216755 [2022-11-25 17:19:58,926 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 508 transitions. [2022-11-25 17:19:58,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 508 transitions. [2022-11-25 17:19:58,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:19:58,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 508 transitions. [2022-11-25 17:19:58,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.66666666666667) internal successors, (508), 6 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:58,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:58,931 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:58,931 INFO L175 Difference]: Start difference. First operand has 68 places, 61 transitions, 644 flow. Second operand 6 states and 508 transitions. [2022-11-25 17:19:58,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 75 transitions, 872 flow [2022-11-25 17:19:58,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 75 transitions, 820 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-11-25 17:19:58,942 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 603 flow [2022-11-25 17:19:58,942 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=603, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2022-11-25 17:19:58,943 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 42 predicate places. [2022-11-25 17:19:58,943 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 603 flow [2022-11-25 17:19:58,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:58,943 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:19:58,943 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:19:58,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 17:19:58,944 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:19:58,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:19:58,944 INFO L85 PathProgramCache]: Analyzing trace with hash -144979357, now seen corresponding path program 3 times [2022-11-25 17:19:58,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:19:58,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94124678] [2022-11-25 17:19:58,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:19:58,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:19:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:19:58,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:19:58,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:19:58,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94124678] [2022-11-25 17:19:58,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94124678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:19:58,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:19:58,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:19:58,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665789801] [2022-11-25 17:19:58,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:19:58,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:19:58,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:19:58,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:19:58,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:19:59,032 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 183 [2022-11-25 17:19:59,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 57 transitions, 603 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:59,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:19:59,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 183 [2022-11-25 17:19:59,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:19:59,189 INFO L130 PetriNetUnfolder]: 119/238 cut-off events. [2022-11-25 17:19:59,189 INFO L131 PetriNetUnfolder]: For 1724/1724 co-relation queries the response was YES. [2022-11-25 17:19:59,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1296 conditions, 238 events. 119/238 cut-off events. For 1724/1724 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 852 event pairs, 20 based on Foata normal form. 4/242 useless extension candidates. Maximal degree in co-relation 1272. Up to 108 conditions per place. [2022-11-25 17:19:59,192 INFO L137 encePairwiseOnDemand]: 177/183 looper letters, 59 selfloop transitions, 20 changer transitions 3/82 dead transitions. [2022-11-25 17:19:59,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 82 transitions, 871 flow [2022-11-25 17:19:59,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:19:59,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:19:59,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 679 transitions. [2022-11-25 17:19:59,195 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46379781420765026 [2022-11-25 17:19:59,195 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 679 transitions. [2022-11-25 17:19:59,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 679 transitions. [2022-11-25 17:19:59,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:19:59,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 679 transitions. [2022-11-25 17:19:59,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 84.875) internal successors, (679), 8 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:59,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:59,201 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:59,201 INFO L175 Difference]: Start difference. First operand has 71 places, 57 transitions, 603 flow. Second operand 8 states and 679 transitions. [2022-11-25 17:19:59,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 82 transitions, 871 flow [2022-11-25 17:19:59,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 82 transitions, 841 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-11-25 17:19:59,211 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 585 flow [2022-11-25 17:19:59,212 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=585, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2022-11-25 17:19:59,212 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 45 predicate places. [2022-11-25 17:19:59,212 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 585 flow [2022-11-25 17:19:59,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:59,213 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:19:59,213 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:19:59,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 17:19:59,213 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:19:59,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:19:59,214 INFO L85 PathProgramCache]: Analyzing trace with hash 296808436, now seen corresponding path program 3 times [2022-11-25 17:19:59,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:19:59,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118674781] [2022-11-25 17:19:59,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:19:59,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:19:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:19:59,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:19:59,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:19:59,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118674781] [2022-11-25 17:19:59,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118674781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:19:59,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:19:59,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:19:59,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498905677] [2022-11-25 17:19:59,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:19:59,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:19:59,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:19:59,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:19:59,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:19:59,323 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 183 [2022-11-25 17:19:59,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 585 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:59,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:19:59,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 183 [2022-11-25 17:19:59,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:19:59,478 INFO L130 PetriNetUnfolder]: 152/303 cut-off events. [2022-11-25 17:19:59,478 INFO L131 PetriNetUnfolder]: For 2126/2126 co-relation queries the response was YES. [2022-11-25 17:19:59,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1660 conditions, 303 events. 152/303 cut-off events. For 2126/2126 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1190 event pairs, 24 based on Foata normal form. 2/305 useless extension candidates. Maximal degree in co-relation 1638. Up to 120 conditions per place. [2022-11-25 17:19:59,482 INFO L137 encePairwiseOnDemand]: 177/183 looper letters, 54 selfloop transitions, 29 changer transitions 2/85 dead transitions. [2022-11-25 17:19:59,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 85 transitions, 1021 flow [2022-11-25 17:19:59,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:19:59,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:19:59,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 588 transitions. [2022-11-25 17:19:59,485 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45901639344262296 [2022-11-25 17:19:59,485 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 588 transitions. [2022-11-25 17:19:59,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 588 transitions. [2022-11-25 17:19:59,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:19:59,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 588 transitions. [2022-11-25 17:19:59,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:59,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:59,490 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:59,490 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 585 flow. Second operand 7 states and 588 transitions. [2022-11-25 17:19:59,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 85 transitions, 1021 flow [2022-11-25 17:19:59,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 85 transitions, 979 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-25 17:19:59,502 INFO L231 Difference]: Finished difference. Result has 81 places, 64 transitions, 790 flow [2022-11-25 17:19:59,502 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=790, PETRI_PLACES=81, PETRI_TRANSITIONS=64} [2022-11-25 17:19:59,503 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2022-11-25 17:19:59,524 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 64 transitions, 790 flow [2022-11-25 17:19:59,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:59,525 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:19:59,525 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:19:59,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 17:19:59,526 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:19:59,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:19:59,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1690921023, now seen corresponding path program 4 times [2022-11-25 17:19:59,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:19:59,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15275182] [2022-11-25 17:19:59,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:19:59,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:19:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:19:59,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:19:59,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:19:59,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15275182] [2022-11-25 17:19:59,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15275182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:19:59,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:19:59,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:19:59,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491724948] [2022-11-25 17:19:59,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:19:59,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:19:59,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:19:59,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:19:59,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:19:59,645 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 183 [2022-11-25 17:19:59,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 64 transitions, 790 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:59,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:19:59,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 183 [2022-11-25 17:19:59,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:19:59,804 INFO L130 PetriNetUnfolder]: 132/269 cut-off events. [2022-11-25 17:19:59,805 INFO L131 PetriNetUnfolder]: For 2132/2132 co-relation queries the response was YES. [2022-11-25 17:19:59,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1596 conditions, 269 events. 132/269 cut-off events. For 2132/2132 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1036 event pairs, 8 based on Foata normal form. 12/281 useless extension candidates. Maximal degree in co-relation 1570. Up to 106 conditions per place. [2022-11-25 17:19:59,808 INFO L137 encePairwiseOnDemand]: 177/183 looper letters, 57 selfloop transitions, 21 changer transitions 2/80 dead transitions. [2022-11-25 17:19:59,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 80 transitions, 1034 flow [2022-11-25 17:19:59,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:19:59,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:19:59,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 509 transitions. [2022-11-25 17:19:59,811 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46357012750455373 [2022-11-25 17:19:59,812 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 509 transitions. [2022-11-25 17:19:59,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 509 transitions. [2022-11-25 17:19:59,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:19:59,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 509 transitions. [2022-11-25 17:19:59,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.83333333333333) internal successors, (509), 6 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:59,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:59,817 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:59,817 INFO L175 Difference]: Start difference. First operand has 81 places, 64 transitions, 790 flow. Second operand 6 states and 509 transitions. [2022-11-25 17:19:59,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 80 transitions, 1034 flow [2022-11-25 17:19:59,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 80 transitions, 1000 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-11-25 17:19:59,830 INFO L231 Difference]: Finished difference. Result has 85 places, 61 transitions, 764 flow [2022-11-25 17:19:59,831 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=764, PETRI_PLACES=85, PETRI_TRANSITIONS=61} [2022-11-25 17:19:59,831 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2022-11-25 17:19:59,832 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 61 transitions, 764 flow [2022-11-25 17:19:59,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:59,832 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:19:59,832 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:19:59,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 17:19:59,833 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:19:59,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:19:59,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1061736412, now seen corresponding path program 4 times [2022-11-25 17:19:59,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:19:59,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845480642] [2022-11-25 17:19:59,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:19:59,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:19:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:19:59,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:19:59,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:19:59,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845480642] [2022-11-25 17:19:59,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845480642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:19:59,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:19:59,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:19:59,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832264932] [2022-11-25 17:19:59,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:19:59,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:19:59,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:19:59,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:19:59,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:19:59,925 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 183 [2022-11-25 17:19:59,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 61 transitions, 764 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:59,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:19:59,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 183 [2022-11-25 17:19:59,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:00,088 INFO L130 PetriNetUnfolder]: 124/245 cut-off events. [2022-11-25 17:20:00,089 INFO L131 PetriNetUnfolder]: For 2136/2136 co-relation queries the response was YES. [2022-11-25 17:20:00,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1504 conditions, 245 events. 124/245 cut-off events. For 2136/2136 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 865 event pairs, 24 based on Foata normal form. 4/249 useless extension candidates. Maximal degree in co-relation 1478. Up to 92 conditions per place. [2022-11-25 17:20:00,092 INFO L137 encePairwiseOnDemand]: 177/183 looper letters, 58 selfloop transitions, 26 changer transitions 1/85 dead transitions. [2022-11-25 17:20:00,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 85 transitions, 1072 flow [2022-11-25 17:20:00,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:20:00,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:20:00,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 675 transitions. [2022-11-25 17:20:00,095 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4610655737704918 [2022-11-25 17:20:00,095 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 675 transitions. [2022-11-25 17:20:00,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 675 transitions. [2022-11-25 17:20:00,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:00,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 675 transitions. [2022-11-25 17:20:00,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 84.375) internal successors, (675), 8 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:00,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:00,105 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:00,106 INFO L175 Difference]: Start difference. First operand has 85 places, 61 transitions, 764 flow. Second operand 8 states and 675 transitions. [2022-11-25 17:20:00,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 85 transitions, 1072 flow [2022-11-25 17:20:00,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 85 transitions, 1049 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-11-25 17:20:00,119 INFO L231 Difference]: Finished difference. Result has 91 places, 62 transitions, 819 flow [2022-11-25 17:20:00,119 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=819, PETRI_PLACES=91, PETRI_TRANSITIONS=62} [2022-11-25 17:20:00,120 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 62 predicate places. [2022-11-25 17:20:00,120 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 62 transitions, 819 flow [2022-11-25 17:20:00,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:00,120 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:00,121 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:20:00,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 17:20:00,121 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:20:00,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:00,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1090631334, now seen corresponding path program 5 times [2022-11-25 17:20:00,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:00,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842067028] [2022-11-25 17:20:00,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:00,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:00,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:20:00,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:00,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842067028] [2022-11-25 17:20:00,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842067028] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:20:00,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943580360] [2022-11-25 17:20:00,167 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 17:20:00,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:20:00,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:20:00,169 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:20:00,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:20:00,269 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:20:00,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:20:00,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:20:00,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:20:00,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:20:00,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:20:00,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:20:00,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943580360] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 17:20:00,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:20:00,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2022-11-25 17:20:00,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991122725] [2022-11-25 17:20:00,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:20:00,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:20:00,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:00,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:20:00,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:20:00,362 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 183 [2022-11-25 17:20:00,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 62 transitions, 819 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:00,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:00,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 183 [2022-11-25 17:20:00,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:00,507 INFO L130 PetriNetUnfolder]: 117/228 cut-off events. [2022-11-25 17:20:00,507 INFO L131 PetriNetUnfolder]: For 2356/2356 co-relation queries the response was YES. [2022-11-25 17:20:00,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1460 conditions, 228 events. 117/228 cut-off events. For 2356/2356 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 775 event pairs, 22 based on Foata normal form. 6/234 useless extension candidates. Maximal degree in co-relation 1432. Up to 132 conditions per place. [2022-11-25 17:20:00,510 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 52 selfloop transitions, 26 changer transitions 0/78 dead transitions. [2022-11-25 17:20:00,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 78 transitions, 1015 flow [2022-11-25 17:20:00,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:20:00,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:20:00,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 512 transitions. [2022-11-25 17:20:00,513 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4663023679417122 [2022-11-25 17:20:00,513 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 512 transitions. [2022-11-25 17:20:00,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 512 transitions. [2022-11-25 17:20:00,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:00,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 512 transitions. [2022-11-25 17:20:00,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.33333333333333) internal successors, (512), 6 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:00,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:00,517 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:00,517 INFO L175 Difference]: Start difference. First operand has 91 places, 62 transitions, 819 flow. Second operand 6 states and 512 transitions. [2022-11-25 17:20:00,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 78 transitions, 1015 flow [2022-11-25 17:20:00,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 78 transitions, 939 flow, removed 9 selfloop flow, removed 7 redundant places. [2022-11-25 17:20:00,529 INFO L231 Difference]: Finished difference. Result has 88 places, 60 transitions, 772 flow [2022-11-25 17:20:00,529 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=772, PETRI_PLACES=88, PETRI_TRANSITIONS=60} [2022-11-25 17:20:00,530 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 59 predicate places. [2022-11-25 17:20:00,530 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 60 transitions, 772 flow [2022-11-25 17:20:00,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:00,530 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:00,531 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:20:00,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:20:00,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:20:00,736 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:20:00,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:00,737 INFO L85 PathProgramCache]: Analyzing trace with hash 381633265, now seen corresponding path program 5 times [2022-11-25 17:20:00,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:00,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536364652] [2022-11-25 17:20:00,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:00,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:00,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:20:00,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:00,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536364652] [2022-11-25 17:20:00,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536364652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:20:00,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:20:00,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:20:00,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96078564] [2022-11-25 17:20:00,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:20:00,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:20:00,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:00,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:20:00,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:20:00,849 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 183 [2022-11-25 17:20:00,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 60 transitions, 772 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:00,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:00,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 183 [2022-11-25 17:20:00,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:00,986 INFO L130 PetriNetUnfolder]: 111/212 cut-off events. [2022-11-25 17:20:00,987 INFO L131 PetriNetUnfolder]: For 1890/1890 co-relation queries the response was YES. [2022-11-25 17:20:00,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1338 conditions, 212 events. 111/212 cut-off events. For 1890/1890 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 676 event pairs, 10 based on Foata normal form. 4/216 useless extension candidates. Maximal degree in co-relation 1311. Up to 155 conditions per place. [2022-11-25 17:20:00,990 INFO L137 encePairwiseOnDemand]: 178/183 looper letters, 48 selfloop transitions, 16 changer transitions 0/64 dead transitions. [2022-11-25 17:20:00,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 64 transitions, 885 flow [2022-11-25 17:20:00,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:20:00,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:20:00,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 420 transitions. [2022-11-25 17:20:00,991 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45901639344262296 [2022-11-25 17:20:00,992 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 420 transitions. [2022-11-25 17:20:00,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 420 transitions. [2022-11-25 17:20:00,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:00,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 420 transitions. [2022-11-25 17:20:00,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:00,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:00,996 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:00,996 INFO L175 Difference]: Start difference. First operand has 88 places, 60 transitions, 772 flow. Second operand 5 states and 420 transitions. [2022-11-25 17:20:00,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 64 transitions, 885 flow [2022-11-25 17:20:01,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 64 transitions, 804 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-11-25 17:20:01,008 INFO L231 Difference]: Finished difference. Result has 83 places, 57 transitions, 671 flow [2022-11-25 17:20:01,008 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=671, PETRI_PLACES=83, PETRI_TRANSITIONS=57} [2022-11-25 17:20:01,011 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2022-11-25 17:20:01,011 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 57 transitions, 671 flow [2022-11-25 17:20:01,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:01,012 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:01,012 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:20:01,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-25 17:20:01,012 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:20:01,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:01,013 INFO L85 PathProgramCache]: Analyzing trace with hash 385262692, now seen corresponding path program 1 times [2022-11-25 17:20:01,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:01,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370324154] [2022-11-25 17:20:01,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:01,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:01,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:20:01,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:01,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370324154] [2022-11-25 17:20:01,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370324154] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:20:01,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99291074] [2022-11-25 17:20:01,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:01,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:20:01,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:20:01,209 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:20:01,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:20:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:01,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 17:20:01,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:20:01,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:20:01,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:20:01,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:20:01,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99291074] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:20:01,745 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:20:01,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-11-25 17:20:01,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474354001] [2022-11-25 17:20:01,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:20:01,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 17:20:01,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:01,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 17:20:01,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-11-25 17:20:01,936 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 183 [2022-11-25 17:20:01,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 57 transitions, 671 flow. Second operand has 18 states, 18 states have (on average 76.83333333333333) internal successors, (1383), 18 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:01,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:01,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 183 [2022-11-25 17:20:01,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:02,421 INFO L130 PetriNetUnfolder]: 116/218 cut-off events. [2022-11-25 17:20:02,422 INFO L131 PetriNetUnfolder]: For 1606/1606 co-relation queries the response was YES. [2022-11-25 17:20:02,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1346 conditions, 218 events. 116/218 cut-off events. For 1606/1606 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 711 event pairs, 2 based on Foata normal form. 1/219 useless extension candidates. Maximal degree in co-relation 1321. Up to 53 conditions per place. [2022-11-25 17:20:02,424 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 41 selfloop transitions, 21 changer transitions 26/88 dead transitions. [2022-11-25 17:20:02,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 88 transitions, 1015 flow [2022-11-25 17:20:02,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:20:02,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 17:20:02,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 884 transitions. [2022-11-25 17:20:02,427 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43914555389965226 [2022-11-25 17:20:02,427 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 884 transitions. [2022-11-25 17:20:02,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 884 transitions. [2022-11-25 17:20:02,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:02,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 884 transitions. [2022-11-25 17:20:02,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 80.36363636363636) internal successors, (884), 11 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:02,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:02,433 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:02,434 INFO L175 Difference]: Start difference. First operand has 83 places, 57 transitions, 671 flow. Second operand 11 states and 884 transitions. [2022-11-25 17:20:02,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 88 transitions, 1015 flow [2022-11-25 17:20:02,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 88 transitions, 983 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-25 17:20:02,443 INFO L231 Difference]: Finished difference. Result has 91 places, 46 transitions, 556 flow [2022-11-25 17:20:02,444 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=556, PETRI_PLACES=91, PETRI_TRANSITIONS=46} [2022-11-25 17:20:02,444 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 62 predicate places. [2022-11-25 17:20:02,444 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 46 transitions, 556 flow [2022-11-25 17:20:02,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 76.83333333333333) internal successors, (1383), 18 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:02,445 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:02,445 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:20:02,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:20:02,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-25 17:20:02,651 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:20:02,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:02,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1291764622, now seen corresponding path program 2 times [2022-11-25 17:20:02,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:02,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067355812] [2022-11-25 17:20:02,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:02,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:02,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:20:02,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:02,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067355812] [2022-11-25 17:20:02,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067355812] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:20:02,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128545486] [2022-11-25 17:20:02,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:20:02,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:20:02,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:20:02,843 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:20:02,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:20:02,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:20:02,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:20:02,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 17:20:02,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:20:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:20:03,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:20:03,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:20:03,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128545486] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:20:03,321 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:20:03,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-11-25 17:20:03,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408979458] [2022-11-25 17:20:03,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:20:03,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 17:20:03,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:03,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 17:20:03,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-11-25 17:20:03,551 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 183 [2022-11-25 17:20:03,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 46 transitions, 556 flow. Second operand has 18 states, 18 states have (on average 76.66666666666667) internal successors, (1380), 18 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:03,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:03,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 183 [2022-11-25 17:20:03,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:03,893 INFO L130 PetriNetUnfolder]: 90/178 cut-off events. [2022-11-25 17:20:03,893 INFO L131 PetriNetUnfolder]: For 1442/1442 co-relation queries the response was YES. [2022-11-25 17:20:03,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1117 conditions, 178 events. 90/178 cut-off events. For 1442/1442 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 534 event pairs, 2 based on Foata normal form. 1/179 useless extension candidates. Maximal degree in co-relation 1091. Up to 55 conditions per place. [2022-11-25 17:20:03,895 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 45 selfloop transitions, 26 changer transitions 9/80 dead transitions. [2022-11-25 17:20:03,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 80 transitions, 935 flow [2022-11-25 17:20:03,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:20:03,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 17:20:03,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 883 transitions. [2022-11-25 17:20:03,897 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.438648782911078 [2022-11-25 17:20:03,897 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 883 transitions. [2022-11-25 17:20:03,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 883 transitions. [2022-11-25 17:20:03,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:03,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 883 transitions. [2022-11-25 17:20:03,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 80.27272727272727) internal successors, (883), 11 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:03,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:03,901 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:03,902 INFO L175 Difference]: Start difference. First operand has 91 places, 46 transitions, 556 flow. Second operand 11 states and 883 transitions. [2022-11-25 17:20:03,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 80 transitions, 935 flow [2022-11-25 17:20:03,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 80 transitions, 802 flow, removed 17 selfloop flow, removed 14 redundant places. [2022-11-25 17:20:03,910 INFO L231 Difference]: Finished difference. Result has 80 places, 49 transitions, 557 flow [2022-11-25 17:20:03,910 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=557, PETRI_PLACES=80, PETRI_TRANSITIONS=49} [2022-11-25 17:20:03,911 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 51 predicate places. [2022-11-25 17:20:03,911 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 49 transitions, 557 flow [2022-11-25 17:20:03,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 76.66666666666667) internal successors, (1380), 18 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:03,911 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:03,912 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:20:03,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-25 17:20:04,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-25 17:20:04,117 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:20:04,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:04,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1208590072, now seen corresponding path program 3 times [2022-11-25 17:20:04,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:04,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627102697] [2022-11-25 17:20:04,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:04,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:04,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:20:04,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:04,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627102697] [2022-11-25 17:20:04,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627102697] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:20:04,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371816207] [2022-11-25 17:20:04,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:20:04,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:20:04,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:20:04,277 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:20:04,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 17:20:04,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-25 17:20:04,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:20:04,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 17:20:04,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:20:04,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:20:04,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:20:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:20:04,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371816207] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:20:04,743 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:20:04,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-11-25 17:20:04,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114372543] [2022-11-25 17:20:04,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:20:04,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 17:20:04,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:04,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 17:20:04,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-11-25 17:20:04,937 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 183 [2022-11-25 17:20:04,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 49 transitions, 557 flow. Second operand has 18 states, 18 states have (on average 76.44444444444444) internal successors, (1376), 18 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) [2022-11-25 17:20:04,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:04,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 183 [2022-11-25 17:20:04,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:05,318 INFO L130 PetriNetUnfolder]: 84/173 cut-off events. [2022-11-25 17:20:05,319 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2022-11-25 17:20:05,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1019 conditions, 173 events. 84/173 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 531 event pairs, 2 based on Foata normal form. 2/175 useless extension candidates. Maximal degree in co-relation 998. Up to 55 conditions per place. [2022-11-25 17:20:05,320 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 33 selfloop transitions, 15 changer transitions 26/74 dead transitions. [2022-11-25 17:20:05,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 74 transitions, 830 flow [2022-11-25 17:20:05,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:20:05,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 17:20:05,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 877 transitions. [2022-11-25 17:20:05,323 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4356681569796324 [2022-11-25 17:20:05,323 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 877 transitions. [2022-11-25 17:20:05,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 877 transitions. [2022-11-25 17:20:05,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:05,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 877 transitions. [2022-11-25 17:20:05,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 79.72727272727273) internal successors, (877), 11 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:05,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:05,328 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:05,328 INFO L175 Difference]: Start difference. First operand has 80 places, 49 transitions, 557 flow. Second operand 11 states and 877 transitions. [2022-11-25 17:20:05,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 74 transitions, 830 flow [2022-11-25 17:20:05,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 74 transitions, 768 flow, removed 9 selfloop flow, removed 8 redundant places. [2022-11-25 17:20:05,334 INFO L231 Difference]: Finished difference. Result has 81 places, 37 transitions, 382 flow [2022-11-25 17:20:05,334 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=382, PETRI_PLACES=81, PETRI_TRANSITIONS=37} [2022-11-25 17:20:05,335 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2022-11-25 17:20:05,335 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 37 transitions, 382 flow [2022-11-25 17:20:05,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 76.44444444444444) internal successors, (1376), 18 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) [2022-11-25 17:20:05,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:05,336 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:20:05,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:20:05,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-25 17:20:05,542 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:20:05,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:05,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1540241778, now seen corresponding path program 4 times [2022-11-25 17:20:05,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:05,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325846197] [2022-11-25 17:20:05,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:05,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:05,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:20:05,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:05,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325846197] [2022-11-25 17:20:05,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325846197] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:20:05,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156108033] [2022-11-25 17:20:05,703 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 17:20:05,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:20:05,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:20:05,704 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:20:05,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 17:20:05,783 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 17:20:05,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:20:05,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 17:20:05,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:20:05,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:20:05,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:20:06,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:20:06,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156108033] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:20:06,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:20:06,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-25 17:20:06,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599131360] [2022-11-25 17:20:06,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:20:06,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 17:20:06,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:06,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 17:20:06,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:20:06,324 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 183 [2022-11-25 17:20:06,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 37 transitions, 382 flow. Second operand has 16 states, 16 states have (on average 76.5) internal successors, (1224), 16 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:06,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:06,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 183 [2022-11-25 17:20:06,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:07,090 INFO L130 PetriNetUnfolder]: 75/169 cut-off events. [2022-11-25 17:20:07,091 INFO L131 PetriNetUnfolder]: For 859/859 co-relation queries the response was YES. [2022-11-25 17:20:07,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 949 conditions, 169 events. 75/169 cut-off events. For 859/859 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 555 event pairs, 1 based on Foata normal form. 3/172 useless extension candidates. Maximal degree in co-relation 928. Up to 39 conditions per place. [2022-11-25 17:20:07,093 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 37 selfloop transitions, 27 changer transitions 18/82 dead transitions. [2022-11-25 17:20:07,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 82 transitions, 864 flow [2022-11-25 17:20:07,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 17:20:07,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-25 17:20:07,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1348 transitions. [2022-11-25 17:20:07,097 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4333011893281903 [2022-11-25 17:20:07,097 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1348 transitions. [2022-11-25 17:20:07,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1348 transitions. [2022-11-25 17:20:07,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:07,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1348 transitions. [2022-11-25 17:20:07,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 79.29411764705883) internal successors, (1348), 17 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:07,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:07,107 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:07,107 INFO L175 Difference]: Start difference. First operand has 81 places, 37 transitions, 382 flow. Second operand 17 states and 1348 transitions. [2022-11-25 17:20:07,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 82 transitions, 864 flow [2022-11-25 17:20:07,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 82 transitions, 772 flow, removed 6 selfloop flow, removed 10 redundant places. [2022-11-25 17:20:07,116 INFO L231 Difference]: Finished difference. Result has 85 places, 46 transitions, 511 flow [2022-11-25 17:20:07,116 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=511, PETRI_PLACES=85, PETRI_TRANSITIONS=46} [2022-11-25 17:20:07,117 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2022-11-25 17:20:07,117 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 46 transitions, 511 flow [2022-11-25 17:20:07,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 76.5) internal successors, (1224), 16 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:07,118 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:07,118 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:20:07,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-25 17:20:07,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:20:07,324 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:20:07,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:07,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1539052486, now seen corresponding path program 5 times [2022-11-25 17:20:07,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:07,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701553549] [2022-11-25 17:20:07,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:07,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:07,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:20:07,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:07,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701553549] [2022-11-25 17:20:07,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701553549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:20:07,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837716032] [2022-11-25 17:20:07,507 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 17:20:07,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:20:07,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:20:07,511 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:20:07,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 17:20:07,587 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:20:07,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:20:07,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 17:20:07,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:20:07,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:20:07,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:20:07,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837716032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:20:07,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:20:07,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-25 17:20:07,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159847355] [2022-11-25 17:20:07,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:20:07,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:20:07,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:07,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:20:07,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:20:07,729 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 183 [2022-11-25 17:20:07,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 46 transitions, 511 flow. Second operand has 7 states, 7 states have (on average 81.14285714285714) internal successors, (568), 7 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:07,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:07,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 183 [2022-11-25 17:20:07,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:07,835 INFO L130 PetriNetUnfolder]: 66/132 cut-off events. [2022-11-25 17:20:07,835 INFO L131 PetriNetUnfolder]: For 730/730 co-relation queries the response was YES. [2022-11-25 17:20:07,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 814 conditions, 132 events. 66/132 cut-off events. For 730/730 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 353 event pairs, 8 based on Foata normal form. 1/133 useless extension candidates. Maximal degree in co-relation 791. Up to 40 conditions per place. [2022-11-25 17:20:07,837 INFO L137 encePairwiseOnDemand]: 177/183 looper letters, 27 selfloop transitions, 9 changer transitions 20/56 dead transitions. [2022-11-25 17:20:07,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 56 transitions, 670 flow [2022-11-25 17:20:07,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:20:07,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:20:07,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 585 transitions. [2022-11-25 17:20:07,839 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4566744730679157 [2022-11-25 17:20:07,839 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 585 transitions. [2022-11-25 17:20:07,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 585 transitions. [2022-11-25 17:20:07,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:07,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 585 transitions. [2022-11-25 17:20:07,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:07,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:07,843 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:07,843 INFO L175 Difference]: Start difference. First operand has 85 places, 46 transitions, 511 flow. Second operand 7 states and 585 transitions. [2022-11-25 17:20:07,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 56 transitions, 670 flow [2022-11-25 17:20:07,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 56 transitions, 565 flow, removed 25 selfloop flow, removed 9 redundant places. [2022-11-25 17:20:07,849 INFO L231 Difference]: Finished difference. Result has 79 places, 33 transitions, 303 flow [2022-11-25 17:20:07,849 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=303, PETRI_PLACES=79, PETRI_TRANSITIONS=33} [2022-11-25 17:20:07,850 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 50 predicate places. [2022-11-25 17:20:07,850 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 33 transitions, 303 flow [2022-11-25 17:20:07,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.14285714285714) internal successors, (568), 7 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:07,851 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:07,851 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:20:07,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-25 17:20:08,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-25 17:20:08,064 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:20:08,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:08,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1448522124, now seen corresponding path program 6 times [2022-11-25 17:20:08,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:08,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364645099] [2022-11-25 17:20:08,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:08,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:08,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:20:08,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:08,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364645099] [2022-11-25 17:20:08,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364645099] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:20:08,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721881265] [2022-11-25 17:20:08,214 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-25 17:20:08,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:20:08,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:20:08,215 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:20:08,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 17:20:08,303 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-25 17:20:08,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:20:08,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 17:20:08,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:20:08,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:20:08,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:20:08,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:20:08,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721881265] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:20:08,716 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:20:08,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-25 17:20:08,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497369864] [2022-11-25 17:20:08,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:20:08,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 17:20:08,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:08,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 17:20:08,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:20:08,919 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 183 [2022-11-25 17:20:08,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 33 transitions, 303 flow. Second operand has 16 states, 16 states have (on average 76.6875) internal successors, (1227), 16 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:08,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:08,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 183 [2022-11-25 17:20:08,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:09,688 INFO L130 PetriNetUnfolder]: 51/118 cut-off events. [2022-11-25 17:20:09,689 INFO L131 PetriNetUnfolder]: For 463/463 co-relation queries the response was YES. [2022-11-25 17:20:09,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 118 events. 51/118 cut-off events. For 463/463 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 325 event pairs, 3 based on Foata normal form. 2/120 useless extension candidates. Maximal degree in co-relation 610. Up to 23 conditions per place. [2022-11-25 17:20:09,690 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 24 selfloop transitions, 16 changer transitions 28/68 dead transitions. [2022-11-25 17:20:09,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 68 transitions, 584 flow [2022-11-25 17:20:09,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 17:20:09,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-25 17:20:09,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1341 transitions. [2022-11-25 17:20:09,694 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43105110896817744 [2022-11-25 17:20:09,694 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1341 transitions. [2022-11-25 17:20:09,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1341 transitions. [2022-11-25 17:20:09,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:09,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1341 transitions. [2022-11-25 17:20:09,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 78.88235294117646) internal successors, (1341), 17 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:09,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:09,702 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:09,702 INFO L175 Difference]: Start difference. First operand has 79 places, 33 transitions, 303 flow. Second operand 17 states and 1341 transitions. [2022-11-25 17:20:09,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 68 transitions, 584 flow [2022-11-25 17:20:09,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 68 transitions, 532 flow, removed 5 selfloop flow, removed 11 redundant places. [2022-11-25 17:20:09,707 INFO L231 Difference]: Finished difference. Result has 79 places, 29 transitions, 253 flow [2022-11-25 17:20:09,707 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=253, PETRI_PLACES=79, PETRI_TRANSITIONS=29} [2022-11-25 17:20:09,708 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 50 predicate places. [2022-11-25 17:20:09,708 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 29 transitions, 253 flow [2022-11-25 17:20:09,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 76.6875) internal successors, (1227), 16 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:09,709 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:09,709 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:20:09,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 17:20:09,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-25 17:20:09,915 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:20:09,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:09,915 INFO L85 PathProgramCache]: Analyzing trace with hash -926186034, now seen corresponding path program 7 times [2022-11-25 17:20:09,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:09,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948626813] [2022-11-25 17:20:09,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:09,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:10,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:20:10,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:10,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948626813] [2022-11-25 17:20:10,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948626813] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:20:10,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202344431] [2022-11-25 17:20:10,095 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 17:20:10,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:20:10,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:20:10,096 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:20:10,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 17:20:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:10,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 17:20:10,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:20:10,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:20:10,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:20:10,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:20:10,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202344431] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:20:10,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:20:10,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-11-25 17:20:10,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695173829] [2022-11-25 17:20:10,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:20:10,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 17:20:10,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:10,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 17:20:10,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-11-25 17:20:10,761 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 183 [2022-11-25 17:20:10,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 29 transitions, 253 flow. Second operand has 18 states, 18 states have (on average 76.5) internal successors, (1377), 18 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:10,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:10,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 183 [2022-11-25 17:20:10,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:11,081 INFO L130 PetriNetUnfolder]: 36/84 cut-off events. [2022-11-25 17:20:11,082 INFO L131 PetriNetUnfolder]: For 384/384 co-relation queries the response was YES. [2022-11-25 17:20:11,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 84 events. 36/84 cut-off events. For 384/384 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 179 event pairs, 3 based on Foata normal form. 1/85 useless extension candidates. Maximal degree in co-relation 427. Up to 23 conditions per place. [2022-11-25 17:20:11,083 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 22 selfloop transitions, 13 changer transitions 9/44 dead transitions. [2022-11-25 17:20:11,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 44 transitions, 398 flow [2022-11-25 17:20:11,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:20:11,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 17:20:11,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 862 transitions. [2022-11-25 17:20:11,086 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42821659215101837 [2022-11-25 17:20:11,086 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 862 transitions. [2022-11-25 17:20:11,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 862 transitions. [2022-11-25 17:20:11,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:11,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 862 transitions. [2022-11-25 17:20:11,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 78.36363636363636) internal successors, (862), 11 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:11,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:11,091 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:11,091 INFO L175 Difference]: Start difference. First operand has 79 places, 29 transitions, 253 flow. Second operand 11 states and 862 transitions. [2022-11-25 17:20:11,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 44 transitions, 398 flow [2022-11-25 17:20:11,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 44 transitions, 356 flow, removed 5 selfloop flow, removed 13 redundant places. [2022-11-25 17:20:11,095 INFO L231 Difference]: Finished difference. Result has 68 places, 28 transitions, 231 flow [2022-11-25 17:20:11,095 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=231, PETRI_PLACES=68, PETRI_TRANSITIONS=28} [2022-11-25 17:20:11,095 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 39 predicate places. [2022-11-25 17:20:11,095 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 28 transitions, 231 flow [2022-11-25 17:20:11,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 76.5) internal successors, (1377), 18 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:11,096 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:11,096 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:20:11,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 17:20:11,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-25 17:20:11,309 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:20:11,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:11,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1829773880, now seen corresponding path program 8 times [2022-11-25 17:20:11,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:11,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142021296] [2022-11-25 17:20:11,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:11,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:11,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:20:11,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:11,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142021296] [2022-11-25 17:20:11,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142021296] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:20:11,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291490728] [2022-11-25 17:20:11,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:20:11,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:20:11,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:20:11,467 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:20:11,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 17:20:11,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:20:11,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:20:11,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 17:20:11,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:20:11,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:20:11,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:20:11,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:20:11,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291490728] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:20:11,945 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:20:11,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-11-25 17:20:11,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036226610] [2022-11-25 17:20:11,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:20:11,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 17:20:11,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:11,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 17:20:11,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-11-25 17:20:12,183 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 183 [2022-11-25 17:20:12,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 28 transitions, 231 flow. Second operand has 18 states, 18 states have (on average 76.44444444444444) internal successors, (1376), 18 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) [2022-11-25 17:20:12,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:12,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 183 [2022-11-25 17:20:12,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:12,447 INFO L130 PetriNetUnfolder]: 32/70 cut-off events. [2022-11-25 17:20:12,447 INFO L131 PetriNetUnfolder]: For 317/317 co-relation queries the response was YES. [2022-11-25 17:20:12,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 70 events. 32/70 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 141 event pairs, 3 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 351. Up to 23 conditions per place. [2022-11-25 17:20:12,448 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2022-11-25 17:20:12,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 34 transitions, 321 flow [2022-11-25 17:20:12,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:20:12,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 17:20:12,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 702 transitions. [2022-11-25 17:20:12,450 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4262295081967213 [2022-11-25 17:20:12,450 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 702 transitions. [2022-11-25 17:20:12,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 702 transitions. [2022-11-25 17:20:12,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:12,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 702 transitions. [2022-11-25 17:20:12,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:12,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 183.0) internal successors, (1830), 10 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:12,455 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 183.0) internal successors, (1830), 10 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:12,456 INFO L175 Difference]: Start difference. First operand has 68 places, 28 transitions, 231 flow. Second operand 9 states and 702 transitions. [2022-11-25 17:20:12,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 34 transitions, 321 flow [2022-11-25 17:20:12,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 34 transitions, 299 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-11-25 17:20:12,458 INFO L231 Difference]: Finished difference. Result has 65 places, 0 transitions, 0 flow [2022-11-25 17:20:12,459 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=65, PETRI_TRANSITIONS=0} [2022-11-25 17:20:12,461 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2022-11-25 17:20:12,461 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 0 transitions, 0 flow [2022-11-25 17:20:12,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 76.44444444444444) internal successors, (1376), 18 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) [2022-11-25 17:20:12,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2022-11-25 17:20:12,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2022-11-25 17:20:12,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-11-25 17:20:12,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-11-25 17:20:12,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-11-25 17:20:12,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-11-25 17:20:12,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-11-25 17:20:12,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-11-25 17:20:12,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2022-11-25 17:20:12,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2022-11-25 17:20:12,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2022-11-25 17:20:12,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-11-25 17:20:12,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 17:20:12,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-25 17:20:12,673 INFO L445 BasicCegarLoop]: Path program histogram: [8, 6, 5, 5, 1, 1, 1, 1, 1] [2022-11-25 17:20:12,676 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 17:20:12,677 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:20:12,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:20:12 BasicIcfg [2022-11-25 17:20:12,682 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:20:12,683 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:20:12,683 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:20:12,683 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:20:12,684 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:19:49" (3/4) ... [2022-11-25 17:20:12,687 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 17:20:12,693 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-25 17:20:12,694 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-25 17:20:12,698 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-25 17:20:12,698 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 17:20:12,699 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-25 17:20:12,699 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 17:20:12,732 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:20:12,732 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:20:12,733 INFO L158 Benchmark]: Toolchain (without parser) took 24595.53ms. Allocated memory was 169.9MB in the beginning and 297.8MB in the end (delta: 127.9MB). Free memory was 136.6MB in the beginning and 249.4MB in the end (delta: -112.8MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. [2022-11-25 17:20:12,733 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 123.7MB. Free memory is still 95.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:20:12,734 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.30ms. Allocated memory is still 169.9MB. Free memory was 136.1MB in the beginning and 125.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 17:20:12,734 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.94ms. Allocated memory is still 169.9MB. Free memory was 125.0MB in the beginning and 123.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:20:12,734 INFO L158 Benchmark]: Boogie Preprocessor took 63.26ms. Allocated memory is still 169.9MB. Free memory was 123.5MB in the beginning and 122.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:20:12,735 INFO L158 Benchmark]: RCFGBuilder took 501.70ms. Allocated memory is still 169.9MB. Free memory was 121.9MB in the beginning and 108.3MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 17:20:12,735 INFO L158 Benchmark]: TraceAbstraction took 23664.74ms. Allocated memory was 169.9MB in the beginning and 297.8MB in the end (delta: 127.9MB). Free memory was 107.7MB in the beginning and 252.5MB in the end (delta: -144.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:20:12,735 INFO L158 Benchmark]: Witness Printer took 49.54ms. Allocated memory is still 297.8MB. Free memory was 252.5MB in the beginning and 249.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 17:20:12,742 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 123.7MB. Free memory is still 95.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.30ms. Allocated memory is still 169.9MB. Free memory was 136.1MB in the beginning and 125.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.94ms. Allocated memory is still 169.9MB. Free memory was 125.0MB in the beginning and 123.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.26ms. Allocated memory is still 169.9MB. Free memory was 123.5MB in the beginning and 122.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 501.70ms. Allocated memory is still 169.9MB. Free memory was 121.9MB in the beginning and 108.3MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 23664.74ms. Allocated memory was 169.9MB in the beginning and 297.8MB in the end (delta: 127.9MB). Free memory was 107.7MB in the beginning and 252.5MB in the end (delta: -144.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 49.54ms. Allocated memory is still 297.8MB. Free memory was 252.5MB in the beginning and 249.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 93 PlacesBefore, 29 PlacesAfterwards, 92 TransitionsBefore, 24 TransitionsAfterwards, 748 CoEnabledTransitionPairs, 7 FixpointIterations, 47 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 84 TotalNumberOfCompositions, 768 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 768, independent: 768, independent conditional: 0, independent unconditional: 768, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 474, independent: 474, independent conditional: 0, independent unconditional: 474, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 474, independent: 472, independent conditional: 0, independent unconditional: 472, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 13, independent: 13, independent conditional: 0, independent unconditional: 13, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 768, independent: 294, independent conditional: 0, independent unconditional: 294, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 474, unknown conditional: 0, unknown unconditional: 474] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 79]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 66]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 116 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 23.4s, OverallIterations: 29, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 9.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2580 SdHoareTripleChecker+Valid, 5.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1984 mSDsluCounter, 1697 SdHoareTripleChecker+Invalid, 4.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1472 mSDsCounter, 333 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7814 IncrementalHoareTripleChecker+Invalid, 8147 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 333 mSolverCounterUnsat, 225 mSDtfsCounter, 7814 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 532 GetRequests, 230 SyntacticMatches, 25 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1142 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=819occurred in iteration=19, InterpolantAutomatonStates: 214, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 517 NumberOfCodeBlocks, 517 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 614 ConstructedInterpolants, 0 QuantifiedInterpolants, 3825 SizeOfPredicates, 33 NumberOfNonLiveVariables, 1454 ConjunctsInSsa, 155 ConjunctsInUnsatCore, 50 InterpolantComputations, 22 PerfectInterpolantSequences, 12/62 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 17:20:12,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb76660-4152-415c-91b8-74bf0b6d1a67/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE